Academic literature on the topic 'Miscanthus×giganteus (M×G)'
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Journal articles on the topic "Miscanthus×giganteus (M×G)"
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Lopushniak, Vasyl, Нalyna Hrytsuliak, Mykhailo Gumentyk, Mykola Kharytonov, Bazena Barchak, and Tomasz Jakubowski. "The formation of the leaf surface area and biomass of the miscanthus giganteus plants depending on the sewage sludge rate." E3S Web of Conferences 280 (2021): 06009. http://dx.doi.org/10.1051/e3sconf/202128006009.
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The case study to determine the peculiarities of Miscanthus giganteus aboveground biomass formation depending on sewage sludge and composts rate carried out in the Precarpathian region of Ivano- Frankivsk province on sod-podzolic soils. The largest area of the leaf surface of miscanthus is formed in the trials where fresh sewage sludge was applied in the rate of 20 - 40 t/ha. The leaf surface area increases from 19 up to 24.0 cm2/plant, and the yield of raw mass of plants at the level of 23.5 - 25.1 t/ha due to increasing rates of sewage sludge application. The highest indicators of net photosynthesis productivity were found in the period of intensive growth, which amounted to 7.78 g/m²/day and in the maturation period of 7.56 g/m²/day in the trial SS - 40 t/ha + N10P14K58. The amount of dry mass of miscanthus plants significantly depends on the height of the shoot and the leaf surface area of the plants. The use of compost based on sewage sludge and straw in a ratio of 3: 1 at a rate of 30 t/ha contributes to the dry weight of miscanthus plants at the level of 15 t/ha.
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Stavridou, Evangelia, Richard J. Webster, and Paul R. H. Robson. "Novel Miscanthus genotypes selected for different drought tolerance phenotypes show enhanced tolerance across combinations of salinity and drought treatments." Annals of Botany 124, no. 4 (March 10, 2019): 653–74. http://dx.doi.org/10.1093/aob/mcz009.
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Abstract Background and Aims Water deficit and salinity stresses are often experienced by plants concurrently; however, knowledge is limited about the effects of combined salinity and water deficit stress in plants, and especially in C4 bioenergy crops. Here we aim to understand how diverse drought tolerance traits may deliver tolerance to combinations of drought and salinity in C4 crops, and identify key traits that influence the productivity and biomass composition of novel Miscanthus genotypes under such conditions. Methods Novel genotypes used included M. sinensis and M. floridulus species, pre-screened for different drought responses, plus the commercial accession Miscanthus × giganteus (M×g.). Plants were grown under control treatments, single stress or combinations of water deficit and moderate salinity stress. Morphophysiological responses, including growth, yield, gas exchange and leaf water relations and contents of proline, soluble sugars, ash and lignin were tested for significant genotypic and treatment effects. Key Results The results indicated that plants subjected to combined stresses showed more severe responses compared with single stresses. All novel drought-tolerant genotypes and M×g. were tolerant to moderate salinity stress. Biomass production in M. sinensis genotypes was more resilient to co-occurring stresses than that in M×g. and M. floridulus, which, despite the yield penalty produced more biomass overall. A stay-green M. sinensis genotype adopted a conservative growth strategy with few significant treatment effects. Proline biosynthesis was species-specific and was triggered by salinity and co-occurring stress treatments, mainly in M. floridulus. The ash content was compartmentalized differently in leaves and stems in the novel genotypes, indicating different mechanisms of ion accumulation. Conclusions This study highlights the potential to select novel drought-tolerant Miscanthus genotypes that are resilient to combinations of stress and is expected to contribute to a deeper fundamental knowledge of different mechanistic responses identified for further exploitation in developing resilient Miscanthus crops.
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Olatoye, Marcus O., Lindsay V. Clark, Nicholas R. Labonte, Hongxu Dong, Maria S. Dwiyanti, Kossonou G. Anzoua, Joe E. Brummer, et al. "Training Population Optimization for Genomic Selection in Miscanthus." G3: Genes|Genomes|Genetics 10, no. 7 (May 26, 2020): 2465–76. http://dx.doi.org/10.1534/g3.120.401402.
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Miscanthus is a perennial grass with potential for lignocellulosic ethanol production. To ensure its utility for this purpose, breeding efforts should focus on increasing genetic diversity of the nothospecies Miscanthus × giganteus (M×g) beyond the single clone used in many programs. Germplasm from the corresponding parental species M. sinensis (Msi) and M. sacchariflorus (Msa) could theoretically be used as training sets for genomic prediction of M×g clones with optimal genomic estimated breeding values for biofuel traits. To this end, we first showed that subpopulation structure makes a substantial contribution to the genomic selection (GS) prediction accuracies within a 538-member diversity panel of predominately Msi individuals and a 598-member diversity panels of Msa individuals. We then assessed the ability of these two diversity panels to train GS models that predict breeding values in an interspecific diploid 216-member M×g F2 panel. Low and negative prediction accuracies were observed when various subsets of the two diversity panels were used to train these GS models. To overcome the drawback of having only one interspecific M×g F2 panel available, we also evaluated prediction accuracies for traits simulated in 50 simulated interspecific M×g F2 panels derived from different sets of Msi and diploid Msa parents. The results revealed that genetic architectures with common causal mutations across Msi and Msa yielded the highest prediction accuracies. Ultimately, these results suggest that the ideal training set should contain the same causal mutations segregating within interspecific M×g populations, and thus efforts should be undertaken to ensure that individuals in the training and validation sets are as closely related as possible.
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Pidlisnyuk, Valentina, Aigerim Mamirova, Robert Ato Newton, Tatyana Stefanovska, Oleksandr Zhukov, Viktoria Tsygankova, and Pavlo Shapoval. "The Role of Plant Growth Regulators in Miscanthus × giganteus Growth on Trace Elements-Contaminated Soils." Agronomy 12, no. 12 (November 29, 2022): 2999. http://dx.doi.org/10.3390/agronomy12122999.
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Soil contamination with trace elements (TEs) is a pressing problem limiting the cultivation of agricultural crops; however, the non-food energy crop Miscanthus × giganteus (M×g) can be grown on such soil. The effect of a new plant growth regulator (PGR), Kamethur, and conventional Charkor was studied when M×g was cultivated in TE-contaminated soils from Všebořice and Chomutov, in the Northern Czech Republic. Kamethur was beneficial for achieving a higher leaves and stem biomass (by 57.1 and 126%, respectively) in the more contaminated Všebořice soil, while Charkor increased only the leaves biomass (49.5%). Analysis of the comprehensive bio-concentration index showed that Charkor decreased stem accumulation of elements essential for plant development (EEs), as well as the potentially toxic (PTEs) elements, by 33.3 and 11.4%, respectively. Kamethur decreased stem accumulation of EEs by 11.4% and increased the accumulation of PTEs by 23.3%. Statistical evaluation of the current results and literature data illustrated the ability of Charkor to reduce the uptake of PTEs, which is critical for converting clean biomass to bioproducts. Further research should confirm the influence of PGRs on the bioparameters and phytoremediation processes of M×g at the field plantation level.
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Szada-Borzyszkowska, Alicja, Jacek Krzyżak, Szymon Rusinowski, Krzysztof Sitko, and Marta Pogrzeba. "Field Evaluation of Arbuscular Mycorrhizal Fungal Colonization in Miscanthus × giganteus and Seed-Based Miscanthus Hybrids Grown in Heavy-Metal-Polluted Areas." Plants 11, no. 9 (April 29, 2022): 1216. http://dx.doi.org/10.3390/plants11091216.
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Understanding the behavior of arbuscular mycorrhizal fungi (AMF) associated with plants is essential for optimizing plant cultivation to the phytoremediation of degraded soils. The objective of the present study was to evaluate the differences in AMF root colonization between novel seed-based interspecific Miscanthus hybrids (M. sacchariflorus × M. sinensis) and the standard M. × giganteus when grown in soils contaminated with heavy metals (Pb, Cd, and Zn). During the third and fourth growing seasons, higher levels of metals in the roots and a reduced transfer of metals from the roots to the shoots were observed in all the plants studied. After the third growing season, GNT5 had the highest AMF root colonization rates in soil contaminated with heavy metals. The lowest AMF colonization rates were observed for the GNT34 hybrid. After the fourth growing season, AMF colonization decreased, which could be due to the drought that occurred during that season. GNT34 showed a lower tendency to develop mycorrhizal structures on heavy-metal (HM)-contaminated soils than GNT41 and M × g; however, this cultivar was insensitive to changes in colonization rates during the dry growing season.
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Scordia, Danilo, Giovanni Scalici, John Clifton-Brown, Paul Robson, Cristina Patanè, and Salvatore Luciano Cosentino. "Wild Miscanthus Germplasm in a Drought-Affected Area: Physiology and Agronomy Appraisals." Agronomy 10, no. 5 (May 12, 2020): 679. http://dx.doi.org/10.3390/agronomy10050679.
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Predictions of future climate scenarios indicate that yields from perennial biomass crops (PBCs) growing in the Mediterranean region are likely to decline due to prolonged drought. Among PBCs, Miscanthus grasses with C4 photosynthesis combine high yield potentials and water use efficiencies. However, the standard commercial clone M. x giganteus (Mxg), with minimal stomatal regulation, is too sensitive to drought for reliable yields in the Mediterranean regions. This paper screened a diverse panel of thirteen Miscanthus genotypes (M. sinensis, M. floridulus, M. sacchariflorus and Mxg) to identify which types could maximize yield under summer drought conditions typical in the South Mediterranean climate. In the second growing season, significant differences were observed for plant height (from 63 to 185 cm), stem number (from 12 to 208 stems plant−1), biomass yield (from 0.17 to 6.4 kg DM plant−1) and whole crop water use efficiency (from 0.11 to 7.0 g L−1). Temporal variation in net photosynthesis, stomatal conductance, transpiration rate and instantaneous water use efficiency identified different strategies adopted by genotypes, and that genotypes selected from M. floridulus and M. sinensis were better adapted to rainfed conditions and could produce six times more biomass than the Mxg. These accessions are being used as parents in experimental breeding aimed at producing future seed-based drought resilient hybrids.
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Dzeletovic, Zeljko, Gordana Andrejic, Aleksandar Simic, and Hakan Geren. "Influence of rhizome mass on the crop establishment and dry matter yield of Miscanthus×giganteus over ten seasons." Journal of Agricultural Sciences, Belgrade 64, no. 1 (2019): 21–35. http://dx.doi.org/10.2298/jas1901021d.
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The aim of the present investigation was to assess the influence of rhizome mass on the success of plantation establishment and biomass yield of the bioenergy crop M. ? giganteus during 10 years of cultivation. The experiment included three treatments with different rhizome masses: 10-20 g (very low); 25- 35 g (low), and 40-60 g (medium mass). Planting density was 2 rhizomes m-2. The plants were harvested by mowing of the whole above-ground biomass each year in February. Out of the total number of planted rhizomes, the lowest emergence was noticed in very low mass rhizomes. In the first season, the greatest number of stems and crop height were encountered under the treatment with the highest rhizome mass. In the second season, crop heights were almost equal in all treatments. During the first two seasons, the highest biomass yields were recorded under the treatments with the highest rhizome masses. Although the analyzed parameters were highest with the rhizomes of 40-60g during the crop establishing stage, starting from the third season of cultivation, high yields of above-ground biomass may be obtained also with lower mass rhizomes. Having the highest biomass yield (25.85?7.36 Mg DM ha-1), the crop established with rhizomes of 25-35 g clearly stood out.
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Virovka, V., O. Opanasenko, and S. Perets. "Technology of Miscanthus giant growing for energy purposes in the conditions of drained peatlands of the Left Bank Forest-Steppe of Ukraine." Agrobìologìâ, no. 1(171) (June 24, 2022): 6–14. http://dx.doi.org/10.33245/2310-9270-2022-171-1-6-14.
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The paper highlights the peculiarities of growing miscanthus for energy purposes in the conditions of drained peat bogs at the Panfl Experimental Station of the NSC "Institute of Agriculture of the NAAS". The economic and ecological advantages of growing energy plantations on reclaimed organogenic soils in comparison with rainfed lands in the zone of the LeftBank Forest-Steppe of Ukraine are argued. The study substantiates the technology and the influence of its individual elements on the productivity of miscanthus giant growing for energy purposes on old-sown hayfelds of carbonate peatlands of the Forest-Steppe. The optimal biometric parameters of the planting material, as well as the planting density, the depth of the rhizomes embedding, the influence of the planting time on the growth and development indicators of the studied culture were determined. Developed and patented agrotechnical, together with a biological method of combating wireworms, which provides effective protection of miscanthus plants at the beginning of the establishment of energy plantations. An environmentally friendly weed control technology has been applied, which excludes the use of chemicals, the introduction of herbicides, which, in turn, does not allow contaminating soil and river waters with harmful elements. The peculiarities of the nutrient regime of the soil and its biological activity in the experimental plots of Miscanthus giant on the drained carbonate peatlands of the Left Bank Forest-Steppe of Ukraine have been investigated. The effect of potash fertilization, as a key element in plant nutrition on organogenic soils, on the productivity of bioenergetic plantations of Miscanthus is studied. The energy output of bioenergy plantations per unit area has been determined depending on the elements of the cultivation technology. Calculations of economic and energy efciency have been carried out. The developed technology for 3 years of miscanthus cultivation ensures the yield of dry biomass at the level of 23.7–26.1 t/ha or 403–444 GJ/ha of energy. The best economic indicators were obtained on the option with a planting scheme (0.7 X 1.4 m) 10 thousand/ha, where the level of proftability made – 56 %, the cost of dry biomass made 529.6 UAH/t and the conditional net proft – 13157 g/ha. Further directions of scientifc research on the creation of bioenergetic plantations from Miscanthus Giganteus on drained carbonate peatlands of the Left Bank Forest-Steppe of Ukraine have been substantiated. Key words: miscanthus, mass of rhizomes, planting density, fertilizers, productivity, proftability.
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Stefanovska, Tatyana, Andrzej Skwiercz, Valentina Pidlisnyuk, Oleksandr Zhukov, Dawid Kozacki, Aigerim Mamirova, Robert Ato Newton, and Sergey Ust’ak. "The Short-Term Effects of Amendments on Nematode Communities and Diversity Patterns under the Cultivation of Miscanthus × giganteus on Marginal Land." Agronomy 12, no. 9 (August 29, 2022): 2063. http://dx.doi.org/10.3390/agronomy12092063.
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The short-term effects of soil amendments on the structure, diversity and function of a nematode community of Miscanthus × giganteus was investigated. Crop was cultivated on marginal, nutrient-poor land amended with biochar in single and double doses (BD1 and BD2), biogas digestate (D), sewage sludge (SS), and hemicellulose waste (HW). Sampling was done after planting, in the middle and end of vegetation; morphology-based approach was used. 28 nematode taxa were identified, including 5 bacterivores genera, 4 fungivores genera, 5 herbivores genera (11 species), 2 omnivores genera, 5 predators genera. The general linear models, correspondence analysis and clustering were applied for evaluation. The total abundance of nematode taxa Filenchus, Dorylaimus, Cephalobus, Panagrolaimus, Aphelenchus, and Ditylenchus was depended on the sampling time and amendments. The incorporation of amendments affected nematode food web and resulted in suppression of plant-parasitic nematodes (PPNs). It was revealed that community structure was more mature for SS, less stable for D and had inconclusive effects for BD1, BD2, and HW. Using amendments ensured pest control benefits which is important given concern that PPNs can inflict crop damage during increased cultivation of M × g. Further research is needed to examine amendments which can minimise PPNs without reducing populations of nitrogen-fixing bacterivores and fungivores.
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Slavov, Gancho T., Christopher L. Davey, Maurice Bosch, Paul R. H. Robson, Iain S. Donnison, and Ian J. Mackay. "Genomic index selection provides a pragmatic framework for setting and refining multi-objective breeding targets in Miscanthus." Annals of Botany 124, no. 4 (October 23, 2018): 521–29. http://dx.doi.org/10.1093/aob/mcy187.
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Abstract Background Miscanthus has potential as a biomass crop but the development of varieties that are consistently superior to the natural hybrid M. × giganteus has been challenging, presumably because of strong G × E interactions and poor knowledge of the complex genetic architectures of traits underlying biomass productivity and climatic adaptation. While linkage and association mapping studies are starting to generate long lists of candidate regions and even individual genes, it seems unlikely that this information can be translated into effective marker-assisted selection for the needs of breeding programmes. Genomic selection has emerged as a viable alternative, and prediction accuracies are moderate across a range of phenological and morphometric traits in Miscanthus, though relatively low for biomass yield per se. Methods We have previously proposed a combination of index selection and genomic prediction as a way of overcoming the limitations imposed by the inherent complexity of biomass yield. Here we extend this approach and illustrate its potential to achieve multiple breeding targets simultaneously, in the absence of a priori knowledge about their relative economic importance, while also monitoring correlated selection responses for non-target traits. We evaluate two hypothetical scenarios of increasing biomass yield by 20 % within a single round of selection. In the first scenario, this is achieved in combination with delaying flowering by 44 d (roughly 20 %), whereas, in the second, increased yield is targeted jointly with reduced lignin (–5 %) and increased cellulose (+5 %) content, relative to current average levels in the breeding population. Key Results In both scenarios, the objectives were achieved efficiently (selection intensities corresponding to keeping the best 20 and 4 % of genotypes, respectively). However, the outcomes were strikingly different in terms of correlated responses, and the relative economic values (i.e. value per unit of change in each trait compared with that for biomass yield) of secondary traits included in selection indices varied considerably. Conclusions Although these calculations rely on multiple assumptions, they highlight the need to evaluate breeding objectives and explicitly consider correlated responses in silico, prior to committing extensive resources. The proposed approach is broadly applicable for this purpose and can readily incorporate high-throughput phenotyping data as part of integrated breeding platforms.