Journal articles: 'Corylus avellana'

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Хужахметова, А. Ш. "Analysis of the habitats of the genus Corylus L. proclamations and their seasonal patterns of fruiting." World Ecology Journal, no. 2() (June 15, 2019): 106–18. http://dx.doi.org/10.25726/worldjournals.pro/wej.2019.2.6.

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Актуальность исследований по изучение особенностей плодоношения группы орехоплодных связана с возрастающим спросом на их плоды и сокращением площадей естественного произрастания этих растений. Представители рода Corylus L. относятся к экономически важным растениям. Анализ литературных источников по опыту интродукции видов рода CorylusL. в разных пунктах России, позволил установить лимитирующие факторы для произрастания. В южных областях, развитие растений C. avellana (л. обыкновенной), C. heterophylla (л. разнолистной) лимитируют высокие летние температуры и дефицит влаги. В северных областях на рост и развитие C. pontica (л. понтийской), C. colurna (л. древовидной) влияют низкие зимние температуры (ниже –30°C). Приведены сведения о современном ареале Corylus avellana и сырьевом запасе плодов всех видов Corylus. Цель – провести анализ географии распространения представителей рода Corylus L. и их сезонные феноклиматические закономерности плодоношения. В естественной дендрофлоре Волгоградской области виды рода Corylus L. не произрастают, однако представляют научный и практический интерес работы по их интродукции. Получены экспериментальные материалы по плодоношению видового и сортового разнообразия рода Corylus L., которое произрастает в дендроколлекциях ФНЦ агроэкологии РАН, в условиях каштановых (кадастровый № 34:36:0000:14:0178), светло-каштановых почв (№34:34:000000:122; №34:34:060061:10), южных черноземов (Новоаннинский район, Волгоградской области). Дана сравнительная оценка жизненных форм и состояния Corylus L. в естественном ареале и районе исследований (Волгоградская область). Приведена динамика основных фенологических времен года в различных природных зонах РФ, где находится естественный ареал видов лещин. Установлена сопряженность фенофаз с сезонной ритмикой климатических параметров и наиболее важных фенофаз друг с другом. Выявлены пространственно-географические, разногодично-временные фенологические закономерности развития для прогнозирования реализации потенциальной плодовой продуктивности видов и сортов орехоплодных кустарников. The relevance of current research studies on characteristics of fruiting groups of nut-bearing associated with the increasing demand for their fruits and reducing the area of natural growth of these plants. Members of the genus CorylusL. are economically important plants. Analysis of the literature on the experience of the introduction of species of the genus Corylus L. in different parts of Russia, allowed to establish limiting factors for growth. In southern regions, plant development C. avellana, C. heterophyllous limit high summer temperatures and deficiency of moisture. In the Northern regions, the growth and development of C. pontica, C. colurna is influenced by low winter temperatures (below -30°C). The data on the modern area of Corylus avellana and raw stock of fruits of all Corylus species are given. The goal is to analyze the geographical distribution of the genus CorylusL. proclamations and their seasonal patterns of fruiting. In the natural dendroflora of the Volgograd region species of the genus Corylus L. do not grow, but are of scientific and practical interest to work on their introduction. Experimental data on fruiting species and varietal diversity of the genus Corylus L., which grows in the dendrocollections of the FNC Agroecology RAS, in chestnut (cadastre № 34:36:0000:14:0178), light-chestnut soils (№34:34:000000:122; №34:34:060061:10), southern humus (Novoanninskiy district of the Volgograd region). A comparative assessment of life forms and state of Corylus L. in the natural habitat and research area (Volgograd region) is given. The dynamics of the main phenological seasons in different natural zones of the Russian Federation, where the natural range of species of hazel is. The conjugacy of phenophases with seasonal rhythm of climatic parameters and the most important phenophases with each other is established. Spatially-geographical, interannual temporal phenological patterns of development to predict the potential fruit productivity of the species and varieties of nut-bearing shrubs.

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Janczar, W., and S. Wrona. "Wstępne badania mieszańców Corylus maxima Mill. X Corylus avellana L. [Preliminary study on the hybrid Corylus maocvma Mill. X Corylus avellana L.]." Acta Agrobotanica 29, no. 2 (2015): 273–78. http://dx.doi.org/10.5586/aa.1976.020.

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Bassil, Nahla V., R. Botta, and S. A. Mehlenbacher. "Microsatellite Markers in Hazelnut: Isolation, Characterization, and Cross-species Amplification." Journal of the American Society for Horticultural Science 130, no. 4 (July 2005): 543–49. http://dx.doi.org/10.21273/jashs.130.4.543.

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Three microsatellite-enriched libraries of the european hazelnut (Corylus avellana L.) were constructed: library A for CA repeats, library B for GA repeats, and library C for GAA repeats. Twenty-five primer pairs amplified easy-to-score single loci and were used to investigate polymorphism among 20 C. avellana genotypes and to evaluate cross-species amplification in seven Corylus L. species. Microsatellite alleles were estimated by fluorescent capillary electrophoresis fragment sizing. The number of alleles per locus ranged from 2 to 12 (average = 7.16) in C. avellana and from 5 to 22 overall (average = 13.32). With the exception of CAC-B110, di-nucleotide SSRs were characterized by a relatively large number of alleles per locus (≥5), high average observed and expected heterozygosity (Ho and He > 0.6), and a high mean polymorphic information content (PIC ≥ 0.6) in C. avellana. In contrast, tri-nucleotide microsatellites were more homozygous (Ho = 0.4 on average) and less informative than di-nucleotide simple sequence repeats (SSRs) as indicated by a lower mean number of alleles per locus (4.5), He (0.59), and PIC (0.54). Cross-species amplification in Corylus was demonstrated. These microsatellite markers were highly heterozygous and polymorphic and differentiated among genotypes of C. avellana irrespective of geographical origin. They will aid in fingerprinting genotypes of the european hazelnut and other Corylus species, genome mapping, and genetic diversity assessments.

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Vander Mijnsbrugge, Kristine, Jessa May Malanguis, Stefaan Moreels, Arion Turcsán, and Eduardo Notivol Paino. "Stimulation, Reduction and Compensation Growth, and Variable Phenological Responses to Spring and/or Summer–Autumn Warming in Corylus Taxa and Cornus sanguinea L." Forests 13, no. 5 (April 22, 2022): 654. http://dx.doi.org/10.3390/f13050654.

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Understanding species-specific responses to climate change allows a better assessment of the possible impact of global warming on forest growth. We studied the responses of the shrub species Corylus avellana L., Corylus maxima Mill. and intermediate forms, together stated as the Corylus taxa, and Cornus sanguinea L. upon periodically elevated temperatures in spring and/or in summer–autumn. Experiments were performed in a common garden, with Belgian and Pyrenean provenances for Corylus avellana and Cornus sanguinea. In the Corylus taxa, a warmer spring resulted in a reduction in height and diameter growth. Remarkably, the reduced diameter increment was restored with full compensation in the following year. The height increment for Cornus sanguinea was larger upon a warmer summer–autumn, concurring with a later leaf senescence. Our results suggest that Corylus is more sensitive to spring warming, influencing growth negatively, whereas Cornus is more sensitive to summer–autumn warming, influencing height growth positively. These deviating responses can be explained, at least partly, by their diverging ecological niches, with the Corylus taxa being more shade-tolerant compared to Cornus sanguinea. The warm spring conditions advanced bud burst in all studied taxa, whereas the warm summer–autumn advanced leaf senescence but prolonged its duration in the Corylus taxa, as well as delayed this phenophase in Cornus sanguinea. Little to no after-effects of the temperature treatments were detected. Although Corylus avellana and Cornus sanguinea plants originated from similar origins, their growth and phenological responses in the common garden diverged, with Corylus being more stable and Cornus displaying more variation between the Belgian and Pyrenean provenances.

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Хужахметова, А. Ш. "Ecological plasticity of nut crops of the collections of the federal scientific center for agroecology RAS." World Ecology Journal, no. 1() (August 18, 2019): 105–15. http://dx.doi.org/10.25726/nm.2019.40.59.006.

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Показана актуальность изучения экологической пластичности древесных растений в связи с необходимостью подбора адаптированного видового состава деревьев и кустарников для защитных лесных насаждений в условиях климатических изменений. Установлено, что экологическая пластичность и пределы толерантности растений связаны со свойством организмов адаптироваться к тому или иному диапазону факторов среды. В статье представлен таксономический состав орехоплодных культур коллекций ФНЦ агроэкологии РАН. Это шесть видов рода Juglans: J. regia, J. mandshurica, J. cinerea, J. rupestris, J. ailanthifolia, J. nigra и три вида рода Corylus: С. avellana L., С. аmericana W., сорта С. pontica C. Koch Президент, Футкурами, Черкесский2. Приведены сведения о положительном опыте культивирования Corylus avellana L. в плантационных насаждениях (1,6 га, посадка рядовая, схема размещения 55 м) в условиях южных черноземов. Цель исследований изучить экологическую пластичность орехоплодных кустарников коллекций ФНЦ агроэкологии РАН. На примере родового комплекса Corylus получены материалы по экологической пластичности орехоплодных кустарников в условиях каштановых (кадастр. 34:36:0000:14:0178), светлокаштановых почв (34:34:000000:122 34:34:060061:10). Установлены уровни изменчивости морфологических признаков ассимиляционного аппарата и плодов С. avellana L., сортов С. pontica C. Koch., которые согласуются с зимо и засухоустойчивостью. Кластерный анализ позволил выявить корреляцию признаков при 5 уровне значимости. Для целей защитного лесоразведения и озеленения засушливых районов рекомендованы Corylus avellana и Черкесский2 с выраженной вариабельностью морфологических признаков, которая указывает на их широкую экологическую валентность и адаптационные возможности в рассматриваемых условиях. The urgency of studying the ecological plasticity of woody plants in connection with the need to select an adapted species composition of trees and shrubs for protective forest plantations in the context of climate change is shown. It is established that the ecological plasticity and tolerance range of plants is associated with the ability of organisms to adapt to a particular range of environmental factors. The article presents the taxonomic composition of nut crops in the collections of FSC Agroecology RAS. Six species of Juglans: J. regia, J. mandshurica, J. cinerea, J. rupestris, J. ailanthifolia, J. nigra and three species of the genus Corylus: С. avellana L., С. аmericana W., varieties of C. pontica C. Koch the President, Futkurami, Circassian2. Data on positive experience of cultivation of Corylus avellana L. in plantation plantings (1,6 hectares, landing ordinary, the scheme of placement of 55 m) in the conditions of southern chernozems are given. The purpose of the research is to study the ecological plasticity of nutbearing shrubs of the collections of the Federal scientific center for Agroecology Russian Academy of Sciences. For example, a generic complex Corylus submissions received on the environmental plasticity of nut bushes in the conditions of brown (the cadaster nubmer 34:36:0000:14:0178), light chestnut soils (34:34:000000:122 34:34:060061:10). The levels of variability of morphological features of the assimilation apparatus and fruits of Corylus avellana L., С. pontica C. Koch varieties were established., which are consistent with winter and drought resistance. Cluster analysis revealed the correlation of features at 5 significance level. Corylus avellana and Circassian2 with a pronounced variability of morphological features, which indicates their broad ecological valence and adaptation capabilities in the conditions under consideration, are recommended for the purposes of protective afforestation and greening of dry areas.

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Scortichini, Marco, Maria Pia Rossi, Stefania Loreti, Adriana Bosco, Mario Fiori, Robert W. Jackson, David E. Stead, et al. "Pseudomonas syringae pv. coryli, the Causal Agent of Bacterial Twig Dieback of Corylus avellana." Phytopathology® 95, no. 11 (November 2005): 1316–24. http://dx.doi.org/10.1094/phyto-95-1316.

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Thirty-eight bacterial strains isolated from hazelnut (Corylus avellana) cv. Tonda Gentile delle Langhe showing a twig dieback in Piedmont and Sardinia, Italy, were studied by a polyphasic approach. All strains were assessed by fatty acids analysis and repetitive sequence-based polymerase chain reaction (PCR) fingerprinting using BOX and ERIC primer sets. Representative strains also were assessed by sequencing the 16S rDNA and hrpL genes, determining the presence of the syrB gene, testing their biochemical and nutritional characteristics, and determining their pathogenicity to hazelnut and other plants species or plant organs. Moreover, they were compared with reference strains of other phytopathogenic pseudomonads. The strains from hazelnut belong to Pseudomonas syringae (sensu latu), LOPAT group Ia. Both fatty acids and repetitive-sequence-based PCR clearly discriminate such strains from other Pseudomonas spp., including P. avellanae and other P. syringae pathovars as well as P. syringae pv. syringae strains from hazelnut. Also, the sequencing of 16S rDNA and hrpL genes differentiated them from P. avellanae and from P. syringae pv. syringae. They did not possess the syrB gene. Some nutritional tests also differentiated them from related P. syringae pathovars. Upon artificial inoculation, these strains incited severe twig diebacks only on hazelnut. Our results justify the creation of a new pathovar because the strains from hazelnut constitute a homogeneous group and a discrete phenon. The name of P. syringae pv. coryli is proposed and criteria for routine identification are presented.

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Erdogan, Veli, and Shawn A. Mehlenbacher. "Interspecific Hybridization in Hazelnut (Corylus)." Journal of the American Society for Horticultural Science 125, no. 4 (July 2000): 489–97. http://dx.doi.org/10.21273/jashs.125.4.489.

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Eight Corylus L. (hazelnut) species were intercrossed in all possible combinations to reveal genetic relationships. Pollinations were made on either individually bagged branches or trees covered entirely with polyethylene using mixtures of pollen of five genotypes to minimize low cluster set due to single incompatible combinations. Percent cluster set, seed germination, and hybrid seedling survival were determined. Hybridity of seedlings was verified by inspection of morphological traits. Based on percent cluster set, seed germination, and hybrid seedling survival along with observed morphological similarities, Corylus species were placed in three groups: 1) the tree hazels C. colurna L. (turkish tree hazel) and C. chinensis Franchet (chinese tree hazel), 2) the bristle-husked shrub species C. cornuta Marshall (beaked hazel), C. californica (A.DC.) Rose (california hazel), and C. sieboldiana Blume (manchurian hazel), and 3) the leafy-husked shrub species C. avellana L. (european hazel), C. americana Marshall (american hazel), C. heterophylla Fischer (siberian hazel), and C. heterophylla Fischer var. sutchuensis Franchet (sichuan hazel). The two tree hazel species crossed with each other readily, as did the three bristle-husked shrub species. The frequency of blanks was low (<20%) for crosses of the tree hazels, and <50% for interspecific crosses within the group of bristle-husked species. The leafy-husked shrub species could be crossed with each other in all directions, although cluster set on C. heterophylla was low. For crosses of species belonging to different groups, set was generally low and the frequency of blanks high. Nevertheless, a few hybrid seedlings were obtained from several combinations. When used as the female parent, C. californica set nuts when crossed with all other species, indicating possible value as a bridge species. Crosses involving C. avellana were more successful when it was the pollen parent. In crosses with C. avellana pollen, cluster set on C. chinensis was better than on C. colurna and the frequency of blanks was much lower, indicating that it might be easier to transfer nonsuckering growth habit from C. chinensis than from C. colurna. Reciprocal differences in the success of crosses was observed. The following crosses were successful C. californica × C. avellana, C. chinensis × C. avellana, C americana × C. heterophylla, C. cornuta × C heterophylla, C. californica × C. colurna, and C. americana × C. sieboldiana, but the reciprocals were not.

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Braun, Lois, and Donald Wyse. "Optimizing IBA Concentration and Stem and Segment Size for Rooting of Hybrid Hazelnuts from Hardwood Stem Cuttings." Journal of Environmental Horticulture 37, no. 1 (March 1, 2019): 1–8. http://dx.doi.org/10.24266/0738-2898-37.1.1.

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Abstract Germplasm improvement of woody crops through plant breeding depends on effective methods of vegetative propagation, both for evaluation of candidate germplasm and for dissemination of improved varieties. Hybrid hazelnuts [Corylus americana (Walter) x C. avellana (L.)] are being developed as a new crop for the Upper Midwest for their ecological and economic value, but lack of economically viable propagation methods is a significant bottleneck to their wide scale adoption. This paper describes two trials to optimize propagation from hardwood stem cuttings in low-cost humidity tents, using dormant crown suckers collected in the fall. We found that: 1) 2 g.L−1 (2,000 ppm) indole-3-butyric acid (IBA) in a 50% ethanol solution is the best concentration for rooting cuttings of a range of sizes and 2) rooting declines with increasing basal diameter of stems, but increases with increasing length of stem. The thicker cortex of large diameter stems may present a physical barrier to emergence of adventitious roots. Conversely, longer stems have larger stores of carbohydrates, which are essential both for keeping the stems alive until roots can be developed, and for providing the building blocks for growing those roots. Index words: Propagation, Corylus americana (Walter), Corylus avellana (L.), rooting, indole-3-butyric acid. Chemicals used in this study: indole-3-butyric acid (IBA). Species used in this study: hybrid hazelnuts [Corylus americana (Walter) x Corylus avellana (L.)].

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Braun, Lois, and Donald Wyse. "Field Pretreatment of Crown Suckers for Propagating Hybrid Hazelnuts." Journal of Environmental Horticulture 37, no. 3 (September 1, 2019): 85–89. http://dx.doi.org/10.24266/0738-2898-37.3.85.

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Abstract Hybrid hazelnuts [Corylus americana (Walter) x C. avellana (L.)] are being developed for their ecological and economic value as a new crop for the Upper Midwest, but lack of economically viable propagation methods is a significant bottleneck to their wide scale adoption. Thus far, mound layering has been the primary propagation method, but layering cannot produce the numbers of plants needed for large-scale production. Rooting hardwood stem cuttings is a possible alternative. In a factorial experiment, we evaluated two pretreatments, blanching with sawdust and application of IBA, applied to rapidly growing first year collar suckers in the field five months ahead of collection for rooting. These treatments simulated mound layering, but without girdling. Sawdust by itself significantly increased both quantity and quality of subsequent rooting, but IBA pretreatment in combination with sawdust produced even better results. Stem cuttings were rooted in a growth chamber, set at 22 C (72 F) and 60% relative humidity, with PAR of 320 umol.m−2 s−1 for 16 hours per day. The lack of heat stress in the growth chamber likely also contributed to relatively high rooting relative to the humidity tents used in previous trials. Index words: Propagation, Corylus americana (Walter), Corylus avellana (L.), rooting, etiolation. Chemicals used in this study: indole-3-butyric acid (IBA). Species used in this study: hybrid hazelnuts [Corylus americana (Walter) x Corylus avellana (L.)].

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Damiano, C., E. Catenaro, J. Giovinazzi, A. Frattarelli, and E. Caboni. "MICROPROPAGATION OF HAZELNUT (CORYLUS AVELLANA L.)." Acta Horticulturae, no. 686 (July 2005): 221–26. http://dx.doi.org/10.17660/actahortic.2005.686.29.

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Bassil, Nahla V., B. J. Rebhuhn, David W. S. Mok, and Machteld C. Mok. "MICROPROPAGATION OF THE HAZELNUT, CORYLUS AVELLANA." HortScience 25, no. 9 (September 1990): 1100d—1100. http://dx.doi.org/10.21273/hortsci.25.9.1100d.

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Development of optimum protocols for micropropagation of C. avellana is particularly important due to the threat of Eastern Filbert Blight and the need for rapid increase of resistant varieties and advanced selections. Therefore, efforts were directed at in vitro establishment, multiplication and rooting, starting with buds from mature trees. The frequency of shoot formation from buds was highest in August but varied with the genotype. Medium containing high Ca levels was more effective in preventing bud necrosis than MS medium. Multiplication rates of 4-7 new shoots/propagule were obtained over a 6-week culture period. Rooting of some genotypes could be accomplished by inclusion of 1 or 3 μM β- indolebutyric acid (IBA) in the medium. Other genotypes responded better to a dip of shoot bases in 1-10 mM IBA for 10 sec., followed by a passage on auxin-free medium. Large numbers of healthy plantlets have been produced for transfer to soil.

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Rovira, M., D. Avanzato, L. Bacchetta, R. Botta, P. Drogoudi, J. J. Ferreira, J. P. Sarraquigne, A. P. Silva, and A. Solar. "EUROPEAN CORYLUS AVELLANA L. GERMPLASM COLLECTIONS." Acta Horticulturae, no. 918 (December 2011): 871–76. http://dx.doi.org/10.17660/actahortic.2011.918.115.

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Bassil, N., D. W. S. Mok, M. C. Mok, and B. J. Rebhuhn. "MICROPROPAGATION OF THE HAZELNUT, CORYLUS AVELLANA." Acta Horticulturae, no. 300 (January 1992): 137–40. http://dx.doi.org/10.17660/actahortic.1992.300.17.

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Saksonov, Sergey Vladimirovich, Lyubov Aleksandrovna Novikova, Anna Evgenyevna Mitroshenkova, Nikolai Sergeevich Rakov, Stepan Aleksandrovich Senator, Grigoriy Valeryevich Dronin, and Aleksei Alekseevich Golovlev. "Specially protected natural area «Sources of the Krymza River»: modern state and protection of (Syzransky District, Samara Region)." Samara Journal of Science 5, no. 2 (June 1, 2016): 52–57. http://dx.doi.org/10.17816/snv20162111.

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In the article contains information about present state of specially protected natural area, natural monument of regional significance Sources of the Krymza River (Syzransky District, Samara Region), its flora, vegetation and rare plant species. Phytocenotic diversity represented by 9 types of plant communities. Marge complex is formed by Bromopsis riparia + variiherbetum, Carex acuta + variiherbetum and Calamagrostis epigeios+ variiherbetum communities. In the upper part of the river Krymzy laid on geobotanical profile ravine in the direction from left to right slope communities are located in the profile as follows: Quercus robur-Corylus avellana-Aegopodium podagraria Tilia cordata-Corylus avellan-variiherbetum Acer platanoides-Urtica dioica Acer platanoides - Corylus avellana- Carex pilosa Quercus robur -Brachypodium pinnatum Populus tremula -Calamagrostis epigeios ; bordered the profile on both sides of the community Calamagrostis epigeios +variiherbetum. The floristic diversity of the territory is represented by 337 species of vascular plants belonging to 199 genera, 59 families and 4 department. The flora 1 species (Iris aphylla) is included in the Red Book of Russia, and 12 species - in the Red Book of Samara Region: Drymochloa sylvatica, Gymnocarpium dryopteris, Laser trilobum, Maianthemum bifolium, Matteuccia struthiopteris, Athyrium filix-femina, Bromopsis benekenii, Crataegus volgensis, Epipactis helleborine, Helichrysum arenarium, Iris aphylla and Primula macrocalyx. These data show that modern state of the natural monument Sources of the Krymza River characterized by stability floral and phytocenotic indicators. Economic exploitation is here reduced to only traditional for him to collect berries locals, run cattle and fire protection.

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Stanojkovic, Jelena, Jasmina Glamoclija, and Dusica Janosevic. "Morpho-anatomical characterization of Tuber macrosporum/Corylus avellana mycorrhizas from cultivated seedlings: Case report." Zbornik Matice srpske za prirodne nauke, no. 133 (2017): 241–49. http://dx.doi.org/10.2298/zmspn1733241s.

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This study investigated the presence of mycorrhizae on seedlings from part of ten-year-old truffles plantation (about 3,000 m2) located in Eastern Serbia. This study is observation of the presence of ectomycorrhizal fungus from genus Tuber during its symbiotic stage on the roots of Corylus avellana L. Ten root samples were collected (randomly) and observed macroscopically and microscopically analyzed. There were changes in morphology and anatomy of the infected roots of C. avellana. Mantle was clearly observed to cover the roots and the mycelia formed the Harting net. Among arbitrary selected seedlings, there were found mature fruiting bodies on the surface of the soil. The truffles, identified as Tuber macrosporum Vittad, were found in the immediate vicinity of the hazelnut trees. There has been no previous information of mycorrhizae Tuber macrosporum/Corylus avellana on artificially created truffles plantation in Serbia.

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Pourbabaei, Hassan, and Mohammad Naghi Adel. "Plant ecological groups and soil properties of common hazel (Corylus avellana L.) stand in Safagashteh forest, north of Iran." Folia Forestalia Polonica 57, no. 4 (December 1, 2015): 245–50. http://dx.doi.org/10.1515/ffp-2015-0026.

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Abstract In Safragashteh forest of Fuman in north of Iran, there is a hazel stand, which has grown naturally. The aim of this research was to evaluate the plant communities and soil characteristics in the area. This study included 50 ha of hazel protected area. A selective sampling method was utilized to record 30 400 m2 for tree and shrub layers, and sub-plots of 100 m2 for herbaceous species. Soil samples were collected at the 30 plots. We found three ecological species groups in the study area. Corylus avellana and Epimedium pinnatum in first group, Fagus orientalis, Asperula odorata, Euphorbia amygdaloides, Carex sp., Fragaria vesca and Viola sylvestris in second group, and Crataegus microphylla, Ilex spinigera, Primula heterochroma, Sedum stoloniferum and Vicia crocea in thirth group were the indicator species. Sand percent was significantly highest in Corylus avellana group, while clay, nutrients elements, pH and SP were significantly highest in the other groups. Biodiversity indices in Corylus avellana group were significantly less than other stands. We recommend to provide comprehensive conservation and management programs in order to protect of common hazel, associated plant species, and to prevent of human activities such as recreational use and livestock.

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Erdogan, V., and S. A. Mehlenbacher. "062 Genetic Relationships among Corylus Species." HortScience 34, no. 3 (June 1999): 451F—452. http://dx.doi.org/10.21273/hortsci.34.3.451f.

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Interspecific hybridization, pollen-stigma incompatibility, and DNA sequence analysis were used to study the relationships among hazelnut (Corylus) species. Interspecific crosses resulted in a wide range of cluster set from 0% to 65%. Reciprocal differences were common. In general, crosses involving C. avellana and C. heterophylla were more successful when used as pollen parents, but crosses involving C. americana were more successful when it was the female parent. C. cornuta, C. californica and C. sieboldiana intercrossed freely in both directions, as did C.colurna and C.chinensis. The Asian species, C. sieboldiana, C.heteropyhlla, and C. chinensis, were not cross-compatible with each other. Fluorescence microscopy showed that pollen-stigma incompatibility exists within and among wild hazelnut species, in addition to the cultivated European hazelnut C. avellana. Pollen-stigma incompatibility and embryo abortion (blank nuts) appear to be major blocks to interspecific gene flow. In addition, the chloroplast matK gene and the Internal Transcribed Spacer (ITS) region of the nuclear ribosomal DNA (nrDNA) were amplified and sequenced. The matK sequence was highly conserved and thus was not informative. However, the ITS sequence was highly informative and parsimony analysis agreed with morphological similarities. Corylus species were placed into four groups: 1) C. avellana, C. maxima, C. americana and C. heterophylla 2) C. colurna, C.chinensis, and C. jacquemontii 3) C. cornuta, C. californica and C. sieboldiana 4)C. ferox.

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Caramiello, R., M. Maffei, M. L. Miaja, and Giovanni Me. "POLLEN SURFACE ALKANE COMPOSITION OF CORYLUS AVELLANA X CORYLUS MAXIMA HYBRIDS." Acta Horticulturae, no. 556 (July 2001): 545–52. http://dx.doi.org/10.17660/actahortic.2001.556.79.

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Хужахметова, А. Ш., А. В. Семенютина, and А. И. Беляев. "Models of protective forest stands with shrubs in conditions of chestnut soils." World Ecology Journal, no. 1 (May 27, 2021): 33–44. http://dx.doi.org/10.25726/f3193-9353-5882-h.

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Дан научный анализ возможностей использования кустарников, как адаптивной жизненной формы для создания возобновляемой системы лесных насаждений, при ландшафтном обустройстве малолесной территории. Объекты исследований: таксоны геоксильного кустарника рода Corylus разных возрастных этапов, которые произрастают в Волгоградской области: в условиях южных черноземов (C. avellana L.), каштановых почв (С. pontica C. Koch. – формы ‘Президент’, ‘Футкурами’, ‘Черкесский-2’; кад. № 34:34:000000:122). Использован биометрический метод в определении таксационных величин и установлении отклонений от оптимальных размеров. Цель исследований – разработать модели защитных лесных насаждений на основе изучения специфики роста таксонов Corylus L. в условиях каштановых почв. Установлен пик интенсивности роста основных, крону образующих побегов Corylus pontica - 5-7 летний возраст. Развитие надземной части в последующие десять лет (этап кустовидного роста) описывается уравнениями регрессии. Они показали взаимосвязь изменения таксационных характеристик с возрастом. Приведены показатели освещенности (от 77,0 до 108,8 kLx) в период вегетации. Установлено интенсивное формирование побеговых систем, сокращение их длительности роста, ранний переход от моноподиального (этап древовидного роста) к симподиальному типу ветвления (этап кустовидного роста) побегов. С учетом анализа структуры и морфогенеза побеговых систем построена графическая модель их возрастного состава и расположения. Критериями выделения возрастных этапов роста - равномерность размещения, возраст побегов, способность к возобновлению. Разработаны эскизные модели защитных лесных насаждений (многорядных, в том числе на склонах крутизной 4-7°) с участием Corylus avellana, Acer campestre, Quercus, Betula pendulaдля повышения устойчивости и обогащения защитных лесных насаждений на каштановых почвах. Таксоны Corylus L. образуют лесную подстилку – один из факторов, влияющих на стокорегулирующие свойства насаждений. В условиях южных черноземов более чем за тридцатилетний период произрастания Corylus сформировало лесную подстилку до 2,0 см (масса 12,0 т/га). Установлены декоративные качества и экологические свойства кустарников Corylusдля озеленительных насаждений. A scientific analysis of the possibilities of using shrubs as an adaptive life form for creating a renewable system of forest stands, in the landscape arrangement of a low-forest area, is given. Objects of research: taxa of the geoxyl shrub of the genus Corylusof different age stages, which grow in the Volgograd region: in the conditions of southern chernozems (C. avellana L.), chestnut soils (C. pontica C. Koch. - forms 'President', 'Futkurami', 'Circassian-2'; kad. № 34:34:000000:122). The biometric method is used in determining the taxational values and determining deviations from the optimal size. The aim of the research is to develop models of protective forest stands based on the study of the specific growth of Corylus L. taxa. in conditions of chestnut soils. The peak growth rate of the main, crown - forming shoots of Corylus pontica is 5-7 years old. The development of the aboveground part in the next ten years (the stage of bush-like growth) is described by regression equations. They showed the relationship of changes in taxation characteristics with age. The indicators of illumination (from 77.0 to 108.8 kLx) during the growing season are given. Intensive formation of shoot systems, reduction of their growth duration, early transition from monopodial (tree-like growth stage) to sympodial branching type (bush-like growth stage) of shoots were established. Taking into account the analysis of the structure and morphogenesis of shoot systems, a graphical model of their age composition and location is constructed. The criteria for identifying the age stages of growth are the uniformity of placement, the age of shoots, and the ability to resume. Sketch models of protective forest stands (multi-row, including on slopes with a steepness of 4-7°) with the participation of Corylus avellana, Acer campestre, Quercus, Betula pendula were developed to increase the stability and enrich the protective forest stands on chestnut soils. Corylus L. taxa form the forest floor-one of the factors influencing the flow-regulating properties of plantings. In the conditions of southern chernozems, Corylus has formed forest litter up to 2.0 cm (weight 12.0 t/ha) for more than thirty years of growth. The decorative qualities and ecological properties of Corylus shrubs for landscaping are established.

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Bassil, N. V., J. Davis, A. N. Azarenko, and S. A. Mehlenbacher. "NUCLEIC ACID EXTRACTION FROM CORYLUS AVELLANA TISSUES." Acta Horticulturae, no. 556 (July 2001): 241–46. http://dx.doi.org/10.17660/actahortic.2001.556.34.

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Dadu, Constantin, Victor Donea, Elisaveta Onica, Ecaterina Donea, and Ion Oboroc. "Alunul obișnuit (Corylus avellana L.) – particularități și beneficii." Pomicultura, Viticultura şi Vinificaţia, no. 1(87) (December 2022): 54–63. http://dx.doi.org/10.53082/1857-3142.22.87.07.

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The article presents the particularities and cultivation tehnologies of the common hazel (Corylus avellana L.) which belongs to the genus Corylus L., family Betulaceae (Gheideman T., 1986). In the spontaneous flora, the common hazel is spread almost throughout all of Europe, Asia Minor, the Balkan Peninsula, Iran, the Caucasus, through deciduous and mixed forests, in clearings, thickets, in hill and mountain regions, less in plains etc. According to the research carried out and the analysis of the specialized literature, the qualities of the common hazelnut were highlighted and the right assortment was selected for the creation of plantations in the Republic of Moldova.

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Braun, Lois, and Donald Wyse. "Optimizing Temperature and Humidity for Rooting Hybrid Hazelnuts from Hardwood Stem Cuttings1." Journal of Environmental Horticulture 37, no. 2 (June 1, 2019): 44–49. http://dx.doi.org/10.24266/0738-2898-37.2.44.

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Abstract Hybrid hazelnuts are being developed as a new crop for the Upper Midwest for their ecological and economic value, but lack of economically viable propagation methods is a significant bottleneck to their wide scale adoption. In previous trials we found that hardwood stem cuttings could be propagated in low cost humidity tents constructed of molded plastic tubs covered with white 70% shade plastic. When the plastic was sealed tightly at the sides, these tubs maintained relative humidity near saturation, but also tended to overheat. This trial experimented with the use of ordinary household humidifiers as an alternative way of maintaining humidity while avoiding overheating. We found that it is not necessary to maintain RH near 100% as we had been doing when we kept the humidity tents tightly sealed. Stem survival and, as a consequence, rooting were improved in vented tents in which humidity was maintained with humidifiers, though these required much more management than the sealed tents. Index words: Propagation, Corylus americana (Walter), Corylus avellana (L.), rooting, indole-3-butyric acid Chemicals used in this study: indole-3-butyric acid (IBA) Species used in this study: hybrid hazelnuts [Corylus americana (Walter) x Corylus avellana (L.)]

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Coyne, Glare J., and Shawn A. Mehlenbacher. "521 PB 483 RESISTANCE TO EASTERN FILBERT BLIGHT IN CORYLUS SPECIES AND INTERSPECIFIC HYBRIDS." HortScience 29, no. 5 (May 1994): 506b—506. http://dx.doi.org/10.21273/hortsci.29.5.506b.

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Eastern filbert blight (EFB) (Anisogramma anomala) is a serious disease of the European hazelnut (Coryls avellana). A single dominant gene for immunity to EFB from C. avellana `Gasaway' is being combined with good nut and kernel traits using a modified backcross approach. Additional sources of resistance would be highly desirable. Clones and seedlings of six other species (C. columa, C. comuta, C. heterophylla, C. sieboldiana, C. amencana, and C. jaquemontii] and a few interspecific hybrid selections were screened in the greenhouse to identify new sources of resistance. C. jacquemontii seedlings and C. columa clones were highly susceptible. C. comuta, C. hetemphylla, and C. sieboldiana clones were resistant, as were 86% of the C. americana seedlings tested. Five C. americana × C. avellana hybrids from New York were resistant under field conditions. One of four C. comuta × C. avellana and two of three C. hetemphylla × C. avellana hybrids were resistant.

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Coyne, Clarice J., Shawn A. Mehlenbacher, and David C. Smith. "Sources of Resistance to Eastern Filbert Blight in Hazelnut." Journal of the American Society for Horticultural Science 123, no. 2 (March 1998): 253–57. http://dx.doi.org/10.21273/jashs.123.2.253.

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Eastern filbert blight is an economically significant disease in European hazelnut (Corylus avellana L.) production in the United States. Since genetic resistance is the only viable disease control strategy to this fungal disease caused by Anisogramma anomala (Peck) E. Müller, greenhouse and field screening of germplasm was undertaken to study the inheritance from known resistant sources and to identify new sources for inclusion in the breeding program. We confirmed that `Gasaway' resistance to this disease is conferred by a single dominant gene. No major gen was identified in the field-resistant cultivar Gem. Representatives of six Corylus species were screened to identify new resistant germplasm. Corylus cornuta Marshall var. cornuta, C. cornuta var. californica (A.DC.) Sharp, C. heterophylla Fischer, and C. sieboldiana Blume were highly resistant, as were most C. americana Marshall genotypes and one C. colurna L. clone tested, but C. jacquenontii Decaisne was highly susceptible. In several cases, hybrids of these species with susceptible C. avellana were also resistant. These new sources of resisstance are being incorporated in the resistance breeding effort.

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Sathuvalli, Vidyasagar R., and Shawn A. Mehlenbacher. "Characterization of American hazelnut (Corylus americana) accessions and Corylus americana × Corylus avellana hybrids using microsatellite markers." Genetic Resources and Crop Evolution 59, no. 6 (August 20, 2011): 1055–75. http://dx.doi.org/10.1007/s10722-011-9743-0.

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Кірмікчій, П. Г. "Проблеми вегетативного розмноження високопродуктивних форм Corylus avellana L." Вісник Київського національного університету імені Тараса Шевченка. Інтродукція та збереження рослинного різноманіття, Вип. 8 (2005): 26–27.

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Pilotti, M., A. Brunetti, L. Tizzani, A. Gallelli, V. Lumia, and F. Gervasi. "GENE CANDIDATES FOR PATHOGEN PERCEPTION IN CORYLUS AVELLANA." Acta Horticulturae, no. 845 (October 2009): 115–22. http://dx.doi.org/10.17660/actahortic.2009.845.12.

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Rovira, M. "GENETIC VARIABILITY AMONG HAZELNUT (Corylus avellana L.) CULTIVARS." Acta Horticulturae, no. 445 (May 1997): 45–50. http://dx.doi.org/10.17660/actahortic.1997.445.6.

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Gürcan, K., S. A. Mehlenbacher, M. A. Köse, and H. İ. Balık. "Population structure analysis of European hazelnut (Corylus avellana)." Acta Horticulturae, no. 1226 (November 2018): 87–92. http://dx.doi.org/10.17660/actahortic.2018.1226.12.

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Prokopenko, Yu S., N. A. Bliznyuk, V. A. Georgiyants, and V. A. Mishchenko. "Analysis of Lipophilic Compounds from Corylus avellana Leaves." Chemistry of Natural Compounds 50, no. 1 (March 2014): 120–21. http://dx.doi.org/10.1007/s10600-014-0882-3.

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Li, Li, and James D. Ross. "Fructose 1,6-bisphosphatase in seeds of Corylus avellana." Phytochemistry 27, no. 7 (January 1988): 1977–80. http://dx.doi.org/10.1016/0031-9422(88)80081-5.

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Shataer, D., R. Abdulla, Q. L. Ma, G. Y. Liu, and H. A. Aisa. "Chemical Composition of Extract of Corylus avellana Shells." Chemistry of Natural Compounds 56, no. 2 (March 2020): 338–40. http://dx.doi.org/10.1007/s10600-020-03024-z.

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Dąbrowska, Agnieszka. "Flowering phenology and pollen seasons of Corylus spp. in Lublin (Poland), 2008-2011." Acta Agrobotanica 65, no. 3 (2012): 13–24. http://dx.doi.org/10.5586/aa.2012.002.

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In the years 2008-2011, phenological observations of flowering of male inflorescences were carried out in seven taxa from the genus Corylus: C. americana, C. avellana, C. avellana ‘Contorta’, C. avellana ‘Pendula’, C. × colurnoides, C. cornuta, C. maxima, grown in the Maria Curie-Skłodowska University Botanical Garden in Lublin. Simultaneously, the hazel pollen seasons in the atmosphere of Lublin were analysed using a Durham sampler. The aim of the work was to assess the flowering in seven Corylus taxa in relation to selected meteorological elements and to describe the pollen seasons in the years 2008-2011. During the study years, the annual phenological cycles in the studied Corylus taxa differed markedly in terms of timing of the onset of the successive flowering phases. During the four years of observations, the earliest beginning of hazel flowering was found at the end of January, whereas the latest – at the end of March. The earliest full bloom took place in the first decade of February, and the latest – in the first decade of April. The end of flowering was reported in February or in the first or second decade of April. Each year, C. avellana was the first to produce flowers and it was subsequently followed by C. americana, C. × colurnoides, C. maxima, C. avellana ‘Pendula’, C. avellana ‘Contorta’, and C. cornuta. The pollen seasons in the study period began at the end of January, in the second decade of February, or in the first decade of March. The end of the pollen seasons most frequently took place in the first or second decade of April. The length of the pollen seasons ranged from 38 to 49 days, while the length of the flowering periods in the individual taxa was 22 days on average. During the four study years, the onset of flowering in C. avellana and the beginning of the pollen season coincided on the same day, whereas the onset of flowering in the other taxa was usually reported after the beginning of the pollen seasons. The flowering period of C. avellana ‘Contorta’ and C. cornuta lasted from 5 to 16 days after the pollen season. The development of inflorescences was most closely related to maximum temperature and relative air humidity.

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Mehlenbacher, Shawn A., and Maxine M. Thompson. "Inheritance of a Chlorophyll Deficiency in Hazelnut." HortScience 26, no. 11 (November 1991): 1414–16. http://dx.doi.org/10.21273/hortsci.26.11.1414.

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A chlorophyll deficiency expressed as yellowing of leaves was observed in hazelnut (Corylus avellana L.) progenies. Segregation ratios approximated 3 green: 1 yellow, indicating control by a single recessive gene designated chlorophyll deficient #1, for which the symbol c, is proposed. `Barcelona', `Butler', `Compton', `Lansing', Willamette', and the ornamental selection `Redleaf #3' are heterozygous. Pedigree analysis strongly suggests that all heteroxygotes inherited the recessive allele from `Barcelona'. A cross of `Barcelona' with the yellow-leafed ornamental Corylus avellana L. var. aurea Kirchn. produced no yellow-leafed seedlings, indicating that the chlorophyll deficiencies from these two sources are controlled by different loci. Progenies segregating simultaneously for this trait and the gene controlling presence of anthocyanin indicated that the two traits are inherited independently. Seedlings deficient in chlorophyll but with anthocyanin were able to survive under field conditions, while leaves of yellow-leafed seedlings lacking anthocyanin became scorched and the trees died.

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PSALLIDAS, P. G. "Pseudomonas syringae pv. avellanae pathovar nov., the bacterium causing canker disease on Corylus avellana." Plant Pathology 42, no. 3 (June 1993): 358–63. http://dx.doi.org/10.1111/j.1365-3059.1993.tb01512.x.

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Ihlen, Per G., Ivar Gjerde, and Magne Sætersdal. "Structural indicators of Richness and rarity of epiphytic lichens on Corylus avellana in two different forest types within a nature reserve in south-western Norway." Lichenologist 33, no. 3 (May 2001): 215–29. http://dx.doi.org/10.1006/lich.2000.0315.

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AbstractEpiphytic lichens (and some non-lichenizedfungi) on 34 coppices (204 stems) of Corylus avellana were investigated in a 140 ha study area in south-western Norway. A total of 65 species were recorded on a total bark area of 63 m⊃2. Corylus in broad-leaved deciduous forest supported more species of macrolichens, and fewer species of microlichens, than Corylus in pine forest. The macrolichen flora of the deciduous forest differed from that of the pine forest by having a rich flora of species belonging to the Lobarion alliance. Old Corylus coppices with tall stems (>8 m), large girth (>8cm diameter at breast height) and a noticeable cover of macrolichens (>10% of bark area) supported the highest number of rare species, and overall, species of macrolichens. More than 50% cover of microlichens indicated richness and rarity of microlichens on Corylus. 11 2001 The British Lichen Society

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Agapkina, Tatjana. "Mifologija derev’ev v tradicionnoj kul’ture slavjan: leščina (Corylus avellana)Die Mythologie der Bäume in der traditionellen Kultur der Slawen: Corylus avellana." Studia mythologica Slavica 1 (May 5, 2015): 183. http://dx.doi.org/10.3986/sms.v1i0.1873.

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Ibragimov, Z., and R. Alizade. "Genetic Diversity Corylus avellana L. in Lesser Caucasus of Azerbaijan." Bulletin of Science and Practice 5, no. 10 (October 15, 2019): 40–49. http://dx.doi.org/10.33619/2414-2948/47/05.

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The article is devoted to the results of a study of the genetic polymorphism of hazel (Corylus avellana (L.) H. Karst.), growing in the Lesser Caucasus within Azerbaijan. For the analyzes used nuclear DNA extracted from sheet material. DNA extraction, PCR and ISSR analyzes were carried out according to standard methods (CTAB, PCR, ISSR protocols). According to the results of analyzes using 4 ISSR primers, the number of identified fragments was 42, which corresponds to 9–12 loci per primer (~10.8). Of the 42 fragments identified, 34 (80.95%) are polymorphic, and 8 (19.05%) are monomorphic. The number of polymorphic loci varies in the range of 7–10. With the smallest number of amplified loci in the UBC811 primer, the largest number of them occurs in the UBC827 primer. Depending on the primer, the number of amplified polymorphic loci varies within 63–90%. The level of ISSR primer polymorphism is on average 86% (75–96%). The average value of the actual heterozygosis (H0) is 0.359, and the expected heterozygosis (HE) is 0.414. According to the results of the cluster analysis, 70 hazel genotypes are combined in 9 clusters. Despite the fact that the populations are remotely and orographically sufficiently isolated, which excludes the flow of genetic information between them, the results of the cluster analysis show that genotypes from different populations are combined into a common sub-cluster in terms of genetic similarity. This is due to the common origin of hazel in populations. In the distant past, this species was represented by an extensive common range, which was fragmented as a result of geological processes. The homogeneous disjunction of the continuous range occurred.

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Braun, Lois, and Donald Wyse. "Timing of Collection and Preparation of Hardwood Stem Cuttings for Propagating Hybrid Hazelnuts 1." Journal of Environmental Horticulture 37, no. 3 (September 1, 2019): 81–84. http://dx.doi.org/10.24266/0738-2898-37.3.81.

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Abstract In previous trials we had found that dormant hybrid hazelnuts crown suckers collected in the fall after leaf drop can be successfully rooted if they are chilled at least until January before being placed in low-cost humidity tents in a greenhouse. The first objective of this experiment was to determine if cuttings could be rooted if started earlier, so as to avoid the heat stress found in the greenhouse in late spring and early summer. The second objective was to see if rooting rates could be improved by collecting non-dormant crown suckers in September and October, before leaf drop. We hypothesized that by collecting stems at a time in the fall when woody plants are translocating resources from leaves to their root systems, we could direct those resources towards growth of adventitious roots. This hypothesis proved to be wrong: stems collected in full leaf died, even with measures to avoid moisture loss from leaves. However, we found that stems collected soon after leaf abscission, in early November, could be rooted if placed in the humidity tents in late November, after only three weeks of artificial chilling at 2 C (36 F). That is much less chilling than we previously thought was needed. Index words: propagation, Corylus americana (Walter), Corylus avellana (L.), rooting, chilling requirement. Chemicals used in this study: indole-3-butyric acid (IBA). Species used in this study: hybrid hazelnuts [Corylus americana (Walter) x Corylus avellana (L.)].

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Bayrak Ozbucak, Tugba, Hamdi Guray Kutbay, Sevda Yalcin, and Dudu Duygu Kilic. "Foliar Nitrogen (N), Phosphorus (P) Dynamics, and Foliar Resorption of Corylus avellana var. avellana." Ekoloji 20, no. 81 (December 31, 2011): 1–7. http://dx.doi.org/10.5053/ekoloji.2011.811.

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Michalczyk, Alicja, Anna Cieniecka-Rosłonkiewicz, and Małgorzata Cholewińska. "Plant endophytic fungi as a source of paclitaxel." Herba Polonica 60, no. 4 (March 1, 2015): 22–33. http://dx.doi.org/10.1515/hepo-2015-0002.

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SummaryEndophytic fungi were isolated from different parts of the plants Corylus avellana (Corylaceae) and Ocimum basilicum (Lamiaceae) and then identified to the genus level based on the morphology of the fungal culture and the characteristics of the spores. The fungicidal and antitumor activity of isolates and extracts obtained from them was determined. We found that a few isolates from Corylus avellana and Ocimum basilicum produced metabolites that inhibited the growth of Oomycetes fungi to a highly significant extent. In the potato disc bioassay only an extract from the isolate C-9 showed an inhibitory action in tumor development. Paclitaxel presence in extract from the isolate C-9 was confirmed using the thin layer chromatography method (TLC) and UV-VIS spectroscopic analysis. The above results indicated that the tested samples revealed an antitumor activity. The detection of paclitaxel in the isolate C-9 suggests that the antitumor activity resulted probably from the presence of this taxane in the tested material.

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Fanelli, Giuliano, Petrit Hoda, Mersin Mersinllari, Ermelinda Mahmutaj, Fabio Attorre, Alessio Farcomeni, Vito Emanuele Cambria, and Michele De Sanctis. "Phytosociological overview of the Fagus and Corylus forests in Albania." Vegetation Classification and Survey 1 (December 30, 2020): 175–89. http://dx.doi.org/10.3897/vcs/2020/54942.

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Aim: The aim of this study is to analyze the mesophilous forests of Albania including Fagus sylvatica and submontane Corylus avellana forests. Mesophilous Albanian forests are poorly known and were not included in the recent syntaxonomic revisions at the European scale. Study area: Albania. Methods: We used a dataset of 284 published and unpublished relevés. They were classified using the Ward’s minimum variance. NMDS ordination was conducted, with over-laying of climatic and geological variables, to analyze the ecological gradients along which these forests develop and segregate. Random Forest was used to define the potential distribution of the identified forest groups in Albania. Results: The study identified seven groups of forests in Albania: Corylus avellana forests, Ostrya carpinifolia-Fagus sylvatica forests, lower montane mesophytic Fagus sylvatica forests, middle montane mesophytic Fagus sylvatica forests, middle montane basiphytic Fagus sylvatica forests, upper montane basiphytic Fagus sylvatica forests, upper montane acidophytic Fagus sylvatica forests. These can be grouped into four main types: Corylus avellana and Ostrya carpinifolia-Fagus sylvatica forests, thermo-basiphytic Fagus sylvatica forest, meso-basiphytic Fagus sylvatica forest and acidophytic Fagus sylvatica forests. This scheme corresponds to the ecological classification recently proposed in a European revision for Fagus sylvatica forests Conclusion: Our study supports an ecological classification of mesophilous forests of Albania at the level of suballiance. Analysis is still preliminary at the level of association, but it shows a high diversity of forest types. Taxonomic reference: Euro+Med PlantBase (http://ww2.bgbm.org/EuroPlusMed/) [accessed 25 Novemeber 2019]. Syntaxonomic references: Mucina et al. (2016) for alliances, orders and classes; Willner et al. (2017) for suballiances.

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Kosenko, I. S., A. I. Opalko, O. A. Balabak, and O. A. Opalko. "Use of chinese hazel (Corylus chinese French.) in hazelnut breeding (Corylus domestica Kos. st Opal.)." Faktori eksperimental'noi evolucii organizmiv 27 (September 1, 2020): 113–18. http://dx.doi.org/10.7124/feeo.v27.1312.

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Aim. The need to improve the domestic assortment of hazelnuts and encouraging results obtained due to the involvement of Chinese hazel Corylus chinensis Franch. in hybridization with the best of its cultivars, prompted the research. Methods. The hybridization program included the most adapted to the conditions of Ukraine domestic and foreign cultivars of hazelnuts, as well as pollinators from natural populations of Corylus avellana L. and Corylus chinensis. Isolation of maternal and collection of pollen from paternal components of crossing was made using standard methods. Pollination was made by blowing pollen into bags with a medical insufflator MO-03 with a special needle (without removing the bag) and after 2–3 days, the pollination was repeated. Hybrid nuts were sown in autumn with wrappers without stratification. Other operations for growing seedlings and further maintenance were performed according to the standard methods. Results. Sufficiently high levels of fruit binding in variants with C. avellana pollen confirm the genetic proximity of the studied cultivars to this species, and the indicators from pollination by C. chinensis were 3–5 times lower. They confirm the remoteness of Chinese hazel from the modern cultivar assortment, but they make it possible to use this species in the hazelnut breeding. Thanks to this, a valuable material was created from which a new cultivar Sofiyvsky 15 was selected. It entered fruiting in the third year after crossing and combines high potential productivity with adaptability, a spherical shape of the fruit and a high content of raw protein and oil in them. Conclusions. The ‘Sofiyivsky 15’ has significantly exceeded the ‘Halle’ and the conditional standard due to its adaptability, quickness, processability and quality of nuts. It can be recommended for wide introduction in farms of all agro-climatic zones of Ukraine. Keywords: Corylus chinensis Franch., Corylus spp., cultivar Sofiyivsky 15, hazelnut hybrids, hybrid orchard, interspecific crossing.

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Guerrero, J. C., S. F. Pérez, E. Q. Ferrada, L. Q. Cona, and E. T. Bensch. "PHYTOPATHOGENS OF HAZELNUT (CORYLUS AVELLANA L.) IN SOUTHERN CHILE." Acta Horticulturae, no. 1052 (September 2014): 269–73. http://dx.doi.org/10.17660/actahortic.2014.1052.36.

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Germain, E. "THE REPRODUCTION OF HAZELNUT (CORYLUS AVELLANA L.): A REVIEW." Acta Horticulturae, no. 351 (January 1994): 195–210. http://dx.doi.org/10.17660/actahortic.1994.351.19.

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Gonçalves, B., A. P. Silva, E. Bacelar, C. Correia, A. Santos, H. Ferreira, and J. Moutinho-Pereira. "EFFECT OF TRAINING SYSTEM ON HAZELNUT (CORYLUS AVELLANA) PHYSIOLOGY." Acta Horticulturae, no. 845 (October 2009): 239–44. http://dx.doi.org/10.17660/actahortic.2009.845.33.

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Камзагали, Е., Б. Т. Мамбетов, and Ш. Танекеева. "БИОМЕТРИЧЕСКИЕ ХАРАКТЕРИСТИКИ ОРЕХОВ CORYLUS AVELLANA ПРОИЗРАСТАЮЩИХ В АЛМАТИНСКОЙ ОБЛАСТИ." Izdenister natigeler, no. 2 (94) (June 30, 2022): 92–100. http://dx.doi.org/10.37884/2-2022/11.

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Фундук — один из самых популярных орехов, потребляемых людьми. Среди сухофруктов выращивание фундука занимает одно из первых мест. Исходя из этого соображения, было решено проверить, имеет ли большое коммерческое значение этого плода соответствует столь же динамичному и продуктивному развитию научной деятельности. Цель настоящего исследования состояла в том, чтобы охарактеризовать некоторые физико-механические характеристики, особенности формы сортов фундука, выращенных в Юго-Востоке Казахстана. В последние годы исследователи в основном сосредоточились на физические свойства сельскохозяйственных продуктов для изучения взаимосвязи и между физическим и химическим параметры. Для сельскохозяйственной продукции внешний вид, форма и размер являются важными параметрами. Физические свойства сельскохозяйственных товаров во многом используется в различных процессах и операциях, таких как хранение, классификация, сушка, упаковка, калибровка и транспортировка этих продуктов. Свойства формы и размеров образцов определяли с использованием общепринятых методов измерения. Измерения производились у 80 орехов фундука отобранными случайным образом собранные по 10 шт с каждого дерева. Орехи фундука были собраны в 2020 г в Иле-Алатауском Национальном парке в питомнике номер 1, которая находится в Алматинской области. Собранные плоды сразу переведены в лабораторию. Образцы орехов были высушены, чтобы иметь стандартное содержание влаги перед анализами и измерениями в лаборатории. Новизна заключается в том что до этого не описывались биометрические данные вида Corrylus Avellana вне естественного местопроизрастания. При этом исследование было ориентировано не только к производству в поле, но и к изучению и улучшение качества продукции. Благодаря анализу было можно проследить некоторые будущие направления научных исследований для этой относительно малоизученной темы.

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Tombesi, S., and D. Farinelli. "XYLEM CHARACTERISTICS IN SOME CULTIVARS OF CORYLUS AVELLANA L." Acta Horticulturae, no. 940 (December 2012): 239–44. http://dx.doi.org/10.17660/actahortic.2012.940.32.

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Shahi-Gharahlar, Ali, Mohammad Reza Fatahi, Zabihollah Zamani, Mohamad Al Hassan, Monica Boscaiu, and Oscar Vicente. "Drought responses in six hazelnut (Corylus avellana L.) cultivars." Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca. Horticulture 73, no. 2 (November 30, 2016): 259. http://dx.doi.org/10.15835/buasvmcn-hort:12288.

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Drought is one of the major causes of reduction of crop yields worldwide, a problem that will increase in the next decades due to climate change. We describe here an initial attempt to define biochemical markers associated to water stress in several hazelnut cultivars, by measuring the levels of common osmolytes and the generation of secondary oxidative stress, in plants subjected to water stress, and after recovery from the stress treatment. Proline appears to be a reliable marker in this species, as its accumulation in leaves correlates well with the degree of stress affecting the plants. Differences between cultivars in relative Pro accumulation and oxidative stress suggested that some cultivars are more tolerant than others and could be selected for cultivation in drought-affected areas

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Callan, N. W., and M. M. Thompson. "Exogenous sugars overcome incompatibility in hazelnut (Corylus avellana L.)." Theoretical and Applied Genetics 71, no. 4 (January 1986): 657–61. http://dx.doi.org/10.1007/bf00264272.

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Journal articles on the topic 'Corylus avellana'

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