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Journal articles on the topic 'Eucalyptus nitens'

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Published: 4 June 2021
Last updated: 21 February 2023

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1

Xavier, Adelica Aparecida, Eugênio Von. Sanfuentes, Davi Theodoro Junghans, and Acelino Couto Alfenas. "Resitência de Eucalyptus globulus e Eucalyptus nitens à ferrugem (Puccinia psidii)." Revista Árvore 31, no. 4 (August 2007): 731–35. http://dx.doi.org/10.1590/s0100-67622007000400018.

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Avaliou-se a resistência das espécies de Eucalyptus globulus e Eucalyptus nitens inoculadas com um isolado uredinospórico monopustular de Puccinia psidii origininário de plantio de Eucalypstus grandis (UFV-2) em Itapetininga, SP. A avaliação foi realizada aos 12 dias após a inoculação, e quantificou-se a doença por meio de uma escala de notas com quatro classes de severidade da doença (S0, S1, S2 e S3). Em média, aproximadamente 60% das plantas de E. globulus e 50% de E. nitens foram resistentes a P. psidii. A variabilidade intra-específica nos materiais estudados indica ser possível a clonagem de genótipos resistentes para plantio comercial ou para uso em programas de melhoramento genético.
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2

Moncur, M. W., and O. Hasan. "Floral induction in Eucalyptus nitens." Tree Physiology 14, no. 11 (November 1, 1994): 1303–12. http://dx.doi.org/10.1093/treephys/14.11.1303.

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3

Carrillo, Isabel, Sofía Valenzuela, and Juan Pedro Elissetche. "Comparative evaluation of Eucalyptus globulus and E. nitens wood and fibre quality." IAWA Journal 38, no. 1 (February 13, 2017): 105–16. http://dx.doi.org/10.1163/22941932-20170160.

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An evaluation of 100 Eucalyptus globulus and 100 E. nitens trees (six years old) was made using the Pilodyn micro-drilling tool as an indicator of wood density. Thirty E. globulus and thirty E. nitens trees with high, medium and low density were selected and sampled with an increment borer at breast height for anatomical analysis using fibre tester equipment and the Resistograph device to generate detailed information about fibre biometry and anatomical wood properties of both species for hybrid development. Eucalyptus globulus trees had a basic wood density average of 478 kg/m3, while E. nitens had a density of 490 kg/m3. Both micro-drilling tools showed significant correlation coefficients with basic wood density. Correlation coefficients between basic wood density and Pilodyn values were negative, being -0.53 (p = 0.01) and -0.68 (p < 0.001) for E. globulus and E. nitens, respectively. For both species a positive correlation was observed between basic density and Resistograph mean amplitude; the correlation coefficient was 0.84 (p < 0.001) for E. globulus, and 0.85 (p < 0.001) for E. nitens. Eucalyptus nitens trees had a higher density and amplitude average and smaller Pilodyn values than E. globulus trees, while the latter had higher coarseness, fibre length and diameter at breast height than E. nitens trees. However, E. nitens showed larger differences between features of earlywood and latewood in a growth ring than E. globulus trees.
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4

Byrne, M., MI Marquezgarcia, T. Uren, DS Smith, and GF Moran. "Conservation and Genetic Diversity of Microsatellite loci in the Genus Eucalyptus." Australian Journal of Botany 44, no. 3 (1996): 331. http://dx.doi.org/10.1071/bt9960331.

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Four microsatellite loci have been characterised in Eucalyptus nitens Maiden and in six other eucalypt species. The dinucleotide repeats were identified by screening a Sau3AI genomic DNA library from E. nitens with (CA)n and (GA)n oligonucleotide probes and sequencing the positive clones. Genetic analysis of 20 unrelated individuals from five populations of E. nitens showed all loci to be highly polymorphic with an average of 9.5 alleles per locus and an average heterozygosity of 0.575. Analysis of four individuals from each of six species from three subgenera showed complete conservation of microsatellite loci between species within the same subgenus, Symphyomyrtus, and conservation of 50% of loci across species between the two main subgenera, Symphyomyrtus and Monocalyptus. None of the primers amplified microsatellite loci in Eucalyptus maculata from the subgenus Corymbia. All microsatellite loci that were detected were polymorphic. Highly polymorphic microsatellite loci that are conserved across species will be useful for mapping quantitative traits, fingerprinting breeding lines, and for within-population studies requiring fine-scale analysis of genetic variation.
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5

Cheng, Yingyao, Gregory Nolan, Damien Holloway, Jaskiran Kaur, Michael Lee, and Andrew Chan. "Flexural characteristics of Eucalyptus nitens timber with high moisture content." BioResources 16, no. 2 (March 2, 2021): 2921–36. http://dx.doi.org/10.15376/biores.16.2.2921-2936.

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The demand for timber resources in the building industry has been increasing. Plantation Eucalyptus nitens is of interest because of its sustainable supply and potential for structural applications. However, few design standards cover strength values of plantation eucalypt timber, especially flexural failure below and above the fibre saturation point, which is an important mechanism of failure in bending members used in the building industry. Static bending tests were undertaken using a universal testing machine to examine nonlinear bending behaviour of 130 fibre managed E. nitens small clear wood samples at low and high moisture contents (MC). The mean bending modulus of rupture (MOR) was 80.7 MPa for low MC and 59.0 MPa for high MC. The high MC samples exhibited larger displacements at low ultimate loads, while the low MC samples showed abrupt failures at relatively small displacements with high ultimate loads. The design characteristic values for low and high MC E. nitens were 68.5 MPa and 39.8 MPa, respectively. This research demonstrates that fibre managed E. nitens timber is a promising timber for structural applications, especially when exposed to water, as the MOR reduction of E. nitens timber above FSP is relatively lower than those of P. radiata, which is a traditional construction material.
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6

Hudson, Irene, Lawrie Wilson, and Kim Van Beveren. "Vessel and Fibre Property Variation in Eucalyptus Globulus and Eucalyptus Nitens: Some Preliminary Results." IAWA Journal 19, no. 2 (1998): 111–30. http://dx.doi.org/10.1163/22941932-90001514.

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Vessel areas and distributions in Eucalyptus globulus and E. nitens vary in a consistent, significant and predictable way from pith to bark and within annual rings. Trends in vessel areas and distributions can be quantified despite the presence of indistinct annual rings and false rings. There is evidence of a vessel free area in first earlywood in E. nitens in which fibre properties are predictably different. At 5% height the vessel free area in the 1991 and 1992 annual rings is 13% and 1O% respectively.
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7

Hingston, A. B., P. B. McQuillan, and B. M. Potts. "Pollinators in seed orchards of Eucalyptus nitens (Myrtaceae)." Australian Journal of Botany 52, no. 2 (2004): 209. http://dx.doi.org/10.1071/bt03015.

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Flowers of the commercially important tree Eucalyptus nitens (Deane & Maiden) Maiden were visited by a diverse array of insects, but not by birds, in Tasmanian seed orchards. Most species of insects that visited the flowers of E. nitens are likely to be effective pollinators because all common species of visitors carried many grains of Eucalyptus pollen, and the open floral structure facilitates frequent insect contact with stigmas. Seed production also suggested that a wide variety of insects were effective pollinators because flowers were consistently well pollinated, despite differences in flower-visitor communities among orchards and particular branches of flowers. The generalised entomophilous pollination system of E. nitens suggests that effective pollinators should occur in seed orchards of this tree throughout the world, provided that flowering occurs at a time of year conducive to insect activity. Although a wide variety of insects appear to be effective pollinators of E. nitens, introduced honeybees, Apis mellifera L., that are often deployed as pollinators in seed orchards were consistently not attracted to the flowers. The reliance on wild insects as pollinators suggests that seed production in E. nitens may benefit from reduced use of broad-spectrum insecticides in, and near, seed orchards.
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8

Ibarra, Luis, Gary Hodge, and Juan José Acosta. "Quantitative Genetics of a Hybrid Population of Eucalyptus nitens × Eucalyptus globulus: Estimation of Genetic Parameters and Implications for Breeding Strategies." Forests 14, no. 2 (February 13, 2023): 381. http://dx.doi.org/10.3390/f14020381.

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In Chile, interspecific hybrids between Eucalyptus nitens × Eucalyptus globulus (GloNi) were developed by Arauco Forestry to capture specific traits from each parental species: growth rate and cold resistance from E. nitens (NIT) and wood properties from E. globulus (GLO). Field tests of E. nitens × E. globulus were distributed in two geographic zones: Arauco (12 tests) and Valdivia (15 tests), where growth and wood properties measurements were recorded at different ages. The hybrid population is composed of clones from 28 full-sib families, being the result of crossing 12 E. nitens females and 8 E. globulus males. Progeny from each of these families were vegetatively propagated and tested on each growth zone, with a total of 1214 clones developed. The quantitative genetic parameter estimates reveal high genetic variation in hybrid volume gain and wood properties, which make possible large genetic gain in all traits analyzed. Additionally, E. nitens has a considerable impact on the volume gain of the hybrid, making it important to test more parents in future interspecific crosses in both hybrid zones. In contrast, E. globulus demonstrated zero impact in volume. In wood traits, E. globulus in Arauco zone demonstrates a large effect on the genetic variability of these traits; meanwhile, in the Valdivia zone, E. nitens and E. globulus parents contributed roughly similar amounts of genetic variation. The high General Hybridizing Ability (GHA) and General Combining Ability (GCA) relationship between hybrid progeny and pure species progeny performance indicates that parents could be selected for interspecific crosses based on pure species test results for volume and wood properties.
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9

Mauchline, N., T. Withers, and Q. Wang. "Host suitability of some eucalypts for development of the Eucalyptus leafroller (Strepsicrates macropetana)." New Zealand Plant Protection 54 (August 1, 2001): 67–70. http://dx.doi.org/10.30843/nzpp.2001.54.3728.

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Strepsicrates macropetana (Lepidoptera Tortricidae) is a pest occurring only on species of Eucalyptus Nochoice trials were carried out by inoculating eggs onto potted plants of E nitens E saligna E fastigata and E regnans held in a glasshouse A number of development parameters including pupal weight time to adult eclosion and survival from egg to adult were measured All hosts were suitable for complete development of larvae however mean survival to adult was highest on E fastigata (61) The shortest time to eclosion (40 days) occurred on E nitens There was no difference in pupal weight between host species Adult female fecundity was variable The results indicate that the species of Eucalyptus tested which were from subgenera containing economically important species all supported development of S macropetana
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10

Kumbula, Samuel, Paramu Mafongoya, Kabir Peerbhay, Romano Lottering, and Riyad Ismail. "Using Sentinel-2 Multispectral Images to Map the Occurrence of the Cossid Moth (Coryphodema tristis) in Eucalyptus Nitens Plantations of Mpumalanga, South Africa." Remote Sensing 11, no. 3 (January 31, 2019): 278. http://dx.doi.org/10.3390/rs11030278.

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Coryphodema tristis is a wood-boring insect, indigenous to South Africa, that has recently been identified as an emerging pest feeding on Eucalyptus nitens, resulting in extensive damage and economic loss. Eucalyptus plantations contributes over 9% to the total exported manufactured goods of South Africa which contributes significantly to the gross domestic product. Currently, the distribution extent of the Coryphodema tristis is unknown and estimated to infest Eucalyptus nitens compartments from less than 1% to nearly 80%, which is certainly a concern for the forestry sector related to the quantity and quality of yield produced. Therefore, the study sought to model the probability of occurrence of Coryphodema tristis on Eucalyptus nitens plantations in Mpumalanga, South Africa, using data from the Sentinel-2 multispectral instrument (MSI). Traditional field surveys were carried out through mass trapping in all compartments (n = 878) of Eucalyptus nitens plantations. Only 371 Eucalyptus nitens compartments were positively identified as infested and were used to generate the Coryphodema tristis presence data. Presence data and spectral features from the area were analysed using the Maxent algorithm. Model performance was evaluated using the receiver operating characteristics (ROC) curve showing the area under the curve (AUC) and True Skill Statistic (TSS) while the performance of predictors was analysed with the jack-knife. Validation of results were conducted using the test data. Using only the occurrence data and Sentinel-2 bands and derived vegetation indices, the Maxent model provided successful results, exhibiting an area under the curve (AUC) of 0.890. The Photosynthetic vigour ratio, Band 5 (Red edge 1), Band 4 (Red), Green NDVI hyper, Band 3 (Green) and Band 12 (SWIR 2) were identified as the most influential predictor variables. Results of this study suggest that remotely sensed derived vegetation indices from cost-effective platforms could play a crucial role in supporting forest pest management strategies and infestation control.
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11

Pérez Cruzado, César, Daniel Vega Nieva, Guillermo Veja, Fernando Basurco, Fernando Muñoz, and Roque Rodríguez Soalleiro. "Aplicación de la parametrización a Eucalyptus nitens del modelo 3-PG a ensayos de procedencias de la especie en Galicia, España." Ciencia & Investigación Forestal 21, no. 2 (July 13, 2015): 27–36. http://dx.doi.org/10.52904/0718-4646.2015.436.

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Eucalyptus nitens tiene una importancia creciente en el norte de España como especie de plantación alternativa a Eucalyptus globulus en áreas frías o muy afectadas por plagas y enfermedades. Se presentan los resultados de crecimiento y mortalidad de 3 ensayos de procedencias de Eucalyptus nitens situados en Galicia, norte de España. Los ensayos se ubicaron en suelos ácidos, a latitud próxima a 43ºN, altitud de 650 a 700 m, con condiciones climáticas atlánticas y se midieron desde los 3 a los 8 años (un ensayo) y 14 años (2 ensayos). Un total de 11 procedencias estaban representadas, totalizando 1440 pies evaluados. La reciente parametrización del modelo de proceso 3-PG para plantaciones comerciales de Eucalyptus nitens (procedencias Barrington Tops y, particularmente, Macalister) se ha empleado para evaluar el comportamiento de las distintas procedencias analizadas. Se discuten las posibles estrategias a considerar para la adaptación del modelo 3-PG a distintas procedencias o materiales genéticos mejorados que se comienzan a emplear en plantaciones comerciales
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12

Cook, Ian O., and Pauline Y. Ladiges. "Isozyme Variation in Eucalyptus nitens and E. denticulata." Australian Journal of Botany 46, no. 1 (1998): 35. http://dx.doi.org/10.1071/bt96072.

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Seed samples from 22 populations across the geographic range ofE. nitens (Deane & Maiden) Maiden s. str. andE. denticulata I.O. Cook & P.Y. Ladiges wereanalysed for isozyme variation and estimation of the genetic distance betweenthe two taxa. Analysis of 12 enzyme systems in 3 buffer systems revealed 12polymorphic and 5 monomorphic loci. The results confirm the distinctiveness ofE. nitens and E. denticulatapreviously reported for morphological characteristics. A single population ofthe related species E. quadrangulata Deane & Maidenwas distinct from, and more heterogeneous than, populations of the other two taxa. The results also show regional genetic variation withinE. nitens that correlates with observed differences inmorphology. Three races were identified: northern and central NSW; southern NSW and Mt Kay in eastern Victoria; Baw Baw Ranges and Central Highlands inVictoria. Geographically isolated populations, particularly from central andnorthern NSW, showed the least genetic variation. Variation was highest in anequivocal population from Mt Gregory, central Victoria, where the distributionof E. nitens overlaps with that ofE. denticulata.
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13

Ananías, Rubén A., Víctor Sepúlveda-Villarroel, Natalia Pérez-Peña, José Torres-Mella, Linette Salvo-Sepúlveda, Darwin Castillo-Ulloa, and Carlos Salinas-Lira. "Radio frequency vacuum drying of Eucalyptus nitens juvenile wood." BioResources 15, no. 3 (May 8, 2020): 4886–97. http://dx.doi.org/10.15376/biores.15.3.4886-4897.

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Wood drying is an important process for adding value and manufacturing innovative products. Eucalyptus nitens wood is inherently difficult to dry because of its natural propensity for checking as well as collapse and shrinkage. Lumber recovery after industrial drying of eucalypts is also very low. This study measured the wood quality of E. nitens juvenile wood (13 mm thickness) after radio-frequency vacuum (RFV) drying and wood dried in a conventional kiln dryer (KD). Drying cycles were performed using a radio frequency vacuum dryer with a 3 m3 of capacity and convective kiln-dryer equipment with a 3.5 m3 of capacity. The results showed that the drying time using the radio frequency vacuum method was reduced by 47% when compared to conventional kiln drying. The shrinkage was significantly lower in the RFV than in the conventional KD. The volumetric collapse decreased by approximately 60% in the RFV drying. RFV drying of E. nitens juvenile wood improves the wood quality for solid wood products because the intensity of surface checking and collapse are reduced.
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14

Pérez, S., C. J. Renedo, A. Ortiz, M. Mañana, D. Silió, and C. Tejedor. "Eucalyptus globulus and the eucalyptus nitens as energy crops." Renewable Energy and Power Quality Journal 1, no. 05 (March 2007): 431–36. http://dx.doi.org/10.24084/repqj05.308.

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15

Battaglia, M., C. Beadle, and S. Loughhead. "Photosynthetic temperature responses of Eucalyptus globulus and Eucalyptus nitens." Tree Physiology 16, no. 1-2 (January 1, 1996): 81–89. http://dx.doi.org/10.1093/treephys/16.1-2.81.

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16

Chen, Xudong, Yingyao Cheng, Andrew Chan, Damien Holloway, and Gregory Nolan. "Anisotropic Tensile Characterisation of Eucalyptus nitens Timber above Its Fibre Saturation Point, and Its Application." Polymers 14, no. 12 (June 13, 2022): 2390. http://dx.doi.org/10.3390/polym14122390.

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Plantation-grown Eucalyptus nitens (E. nitens) has been grown predominantly for the pulp and paper industry. In this study, the suitability of E. nitens as a structural material is examined using static tensile tests in a universal testing machine. The anisotropic tensile behaviour of 240 Eucalyptus nitens small clear wood samples with a diversity of grain angles was examined in both dry and wet conditions. The samples had a highly anisotropic tensile characterisation in the context of both a low moisture content (MC = 12%) and a high moisture content (MC > its fibre saturation point, FSP). The results showed that, in a high moisture content condition, the wood showed a lower failure strength and more ductility at all grain angles than in a low moisture content condition. The underlying failure mechanism of Eucalyptusnitens timber in tension was determined in detail from the perspective of the microstructure of wood cellulose polymer composites. The mean tensile failure strengths perpendicular and parallel to the fibre direction were, respectively, 5.6 and 91.6 MPa for the low MC and 3.8 and 62.1 MPa for the high MC condition. This research provides a basis for using E. nitens as a potential structural tensile member. The moisture modification factors of Eucalyptus timber at a mean level are higher than those of the traditional construction material, Pinus radiata, implying that E. nitens is promising as a material to be used for tensile members in water saturated conditions.
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17

Ruaud, J. N., K. Churchill, and S. Pepper. "SOMATIC EMBRYOGENESIS INITIATION IN EUCALYPTUS NITENS." Acta Horticulturae, no. 447 (October 1997): 185–86. http://dx.doi.org/10.17660/actahortic.1997.447.34.

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18

Byrne, M., T. L. Parrish, and G. F. Moran. "Nuclear RFLP diversity in Eucalyptus nitens." Heredity 81, no. 2 (August 1998): 225–33. http://dx.doi.org/10.1046/j.1365-2540.1998.00386.x.

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19

Smethurst, Philip, Greg Holz, Martin Moroni, and Craig Baillie. "Nitrogen management in Eucalyptus nitens plantations." Forest Ecology and Management 193, no. 1-2 (May 2004): 63–80. http://dx.doi.org/10.1016/j.foreco.2004.01.023.

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20

Williams, Dean R., Philip J. Smethurst, and Brad M. Potts. "Phosphorus fertiliser can induce earlier vegetative phase change in Eucalyptus nitens." Australian Journal of Botany 52, no. 2 (2004): 281. http://dx.doi.org/10.1071/bt03135.

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Many eucalypts are heteroblastic, exhibiting a distinct change in leaf morphology through their ontogeny. The physiological and chronological age at which the tree switches from the production of juvenile foliage to adult foliage (vegetative phase change) can be under strong genetic control and influenced to some extent by environment. We studied the effect of nitrogen (N) and phosphorus (P) fertiliser on the growth and vegetative phase change in Eucalyptus nitens. Whilst neither fertiliser treatment affected tree height at 3.5 years of age, P fertiliser significantly reduced the length of the juvenile vegetative phase. In contrast, N, but not P, has been shown to promote flowering. These findings support the argument that vegetative and reproductive maturity are genetically and physiologically uncoupled in Eucalyptus.
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21

Eyles, Alieta, and Caroline Mohammed. "COMPARISON OF CEPA (2-CHLOROETHYL PHOSPHONIC ACID) INDUCED RESPONSES IN JUVENILE EUCALYPTUS NITENS, E. GLOBULUS AND E. OBLIQUA: A HISTOCHEMICAL AND ANATOMICAL STUDY." IAWA Journal 23, no. 4 (2002): 419–30. http://dx.doi.org/10.1163/22941932-90000312.

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Kino veins and/or pockets are a characteristic defect of some Eucalyptus species and have long been recognized as sources of degrade in eucalypt timber. In a comparative study, the course of both histochemical and anatomical responses of three juvenile Eucalyptus species (E. nitens, E. globulus and E. obliqua) to treatment with an ethylene-releasing compound, 2-chloroethyl phosphonic acid (CEPA), were examined. Kino veins were induced in both E. obliqua and E. globulus. The hormone treatment failed to induce kino vein formation in E. nitens. The traumatic parenchyma (that later differentiated into kino veins) was not always derived from the initials of the vascular cambium as reported in previous studies of E. globulus. Instead, the traumatic parenchyma appeared to be produced from the meristematic activity of the inner phloem parenchyma. In addition, kino veins found in 2- to 3-year-old E. globulus were mostly included in the phloem and not in the xylem as generally observed in mature E. globulus.
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22

Cook, IO, and PY Ladiges. "Morphological variation within Eucalyptus nitens s. lat. and recognition of a new species, E. denticulata." Australian Systematic Botany 4, no. 2 (1991): 375. http://dx.doi.org/10.1071/sb9910375.

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The complete geographic range of Eucalyptus nitens s. lat. (shining gum) was sampled to determine the pattern of variation in adult and seedling morphology. Analyses of the different data sets indicated the presence of two distinct taxa: one, characterised by denticulate adult leaf margins, is described as E. denticulata sp. nov.; the other, characterised by entire leaf margins, is E. nitens s. str. Many other characters distinguish the two taxa. Mature trees of E. denticulata have leaves with higher oil gland density, longer peduncles, more cup-shaped rather than barrel-shaped fruit, more frequently exserted valves, and rounded and longer flower buds compared with E. nitens s. str. Seedlings of the two species can be distinguished mainly on the basis that those of E. denticulata have longer internodes and leaves which clasp the stem to a lesser extent. The major occurrence of E. denticulata is on the Errinundra Plateau, East Gippsland, with limited occurrences in the Baw Baw Ranges and Central Highlands of Victoria. Eucalyptus nitens s. str. is found in isolated stands in New South Wales and Victoria. The two species are allopatric, with the exception of the Baw Baw Ranges and Central Highlands of Victoria where some stands are mixed. Eucalyptus nitens s. str. is also geographically variable, comprising three distinct geographic races: northern and central New South Wales, southern New South Wales, and the Baw Baw Ranges and Central Highlands of Victoria.
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23

Mickelbart, Ovata M. V. "948 PLANTING DENSITY EFFECTS ON CHARACTERISTICS OF SUN AND SHADE LEAVES OF EUCALYPTUS NITENS AND EUCALYPTUS OVATA." HortScience 29, no. 5 (May 1994): 569e—569. http://dx.doi.org/10.21273/hortsci.29.5.569e.

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Euculyptus ovata and E. nitens were analyzed for differences in leaf area (LA), leaf dry weight (LDW), leaf water content (LWC), specific leaf area (SLA), chlorophyll (chl), carotenoid (car), and protein (pro) content. A factorial design with 2 species, 3 densities (2340, 6490, and 12990 trees/ha), and 2 leaf exposures (sun and shade) was used. Low light appeared to have a greater affect on changes in leaf composition than planting density. Shade leaves of both species had higher LA, SLA, chl/LDW, car/LDW and chl:car and lower chl/LA car/LA, chl a:b and pro/LDW than sun leaves. Increased density resulted in higher SLA, chl:car ratio, and pro/LDW. Photosynthetic pigment accumulation was greater in shade leaves of E. ovata. E. ovata therefore, seems to adapt to shade through adjustment of the photosynthetic apparatus,while E. nitens adapted to low light primarily through increased SLA. SLA increased with greater planting densities and with decreased light intensity. The increase in SLA in shade leaves was greater in E. nitens, accounting for its greater biomass production over all planting densities in a related study.
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24

Millaniyage, Kuluni, Nathan Kotlarewski, Louise Wallis, Assaad Taoum, and Gregory Nolan. "Janka Hardness Evaluation of Plantation-Grown Eucalyptus nitens for Engineered Flooring Applications." Buildings 12, no. 11 (November 3, 2022): 1862. http://dx.doi.org/10.3390/buildings12111862.

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Hardness is commonly used to determine the suitability of a timber species for flooring applications. In this study, Janka hardness test is conducted on sawlog managed Eucalyptus nitens and regrowth forest Eucalyptus obliqua sourced from Tasmania, Australia. Plantation E. nitens timber is currently entering the Australian market and the feasibility of using this fast grown species in value added applications such as timber flooring is advantageous. Further to testing Janka hardness on solid timber samples, a regime of engineered timber flooring prototypes consisting of plantation E. nitens top layers, veneers and solid densified E. nitens boards were developed and subjected to Janka hardness test. The results were compared against solid E. obliqua flooring and a commercially available engineered flooring product with Tasmanian Oak top layer. The results showed that Janka hardness of plantation grown E. nitens, and E. obliqua currently available in the market are lower than the values published in the literature. This indicates that the material properties of fast grown plantation timber and regrowth forest material are different to the native forest timber properties published decades earlier. Furthermore, some of the tested engineered flooring prototypes showed similar behaviour to timber flooring products currently in market, suggesting that E. nitens engineered flooring would be suitable for domestic/light commercial flooring applications despite the general conception of unsuitability due to lower densities.
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25

Glen, M., A. H. Smith, S. R. H. Langrell, and C. L. Mohammed. "Development of Nested Polymerase Chain Reaction Detection of Mycosphaerella spp. and Its Application to the Study of Leaf Disease in Eucalyptus Plantations." Phytopathology® 97, no. 2 (February 2007): 132–44. http://dx.doi.org/10.1094/phyto-97-2-0132.

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Mycosphaerella leaf disease (MLD) is a serious disease of two of the major eucalypt species grown in temperate regions worldwide, Eucalyptus globulus and E. nitens. More than 30 species of Mycosphaerella have been reported on eucalypts worldwide. Accurate, rapid, and early discrimination of Mycosphaerella spp. causing crown damage to E. globulus and E. nitens will assist the development of sustainable management strategies. This study describes the development, and incorporation in a nested polymerase chain reaction (PCR) approach, of specific primers for the detection and identification of Mycosphaerella spp. commonly reported from leaf lesions of E. globulus and E. nitens in Australia. Primer design was assisted by sequence alignment and phylogenetic analysis of 165 nonredundant sequences from the nuclear ribosomal DNA internal transcribed spacer regions of Mycosphaerella and related species. Phylo-genetic analysis revealed very high sequence similarity for two taxon groups, Mycosphaerella grandis and M. parva, and M. vespa, M. ambi phylla, and M. molleriana, and primers were designed to differentiate each of the two groups. Three other species, M. cryptica, M. nubilosa, and M. tasmaniensis, were distinct and distinguished by species-specific primers. In double-blind trials, the detection test accurately and rapidly identified Mycosphaerella spp. in cultures and discriminated against other pathogens that co-occur in or on Eucalyptus leaves, thereby verifying its reliability. The detection test has an internal amplification control in the first-round PCR with fungal-specific primers to raise confidence in test results, particularly to highlight negative results due to PCR inhibition. When applied to DNA extracted from leaf or stem samples either as multiple or single lesions, it detected and identified up to five Mycosphaerella spp. or taxon groups in both positively identified and in young (putative) MLD lesions. The samples were 20 mm2 or larger in surface area and were collected while undertaking disease rating assessments in an experimental investigation of Eucalyptus plantations and regrowth forest. Using nested PCR detection, Mycosphaerella spp. were positively identified in 2 days, 1 to 5 months earlier than by classical methods, demonstrating the potential application of this detection test to the early discrimination of MLD components in ecological, epidemiological, and genetic investigations.
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Gomes, Filomena, and Jorge M. Canhoto. "Micropropagation of Eucalyptus nitens maiden (Shining gum)." In Vitro Cellular & Developmental Biology - Plant 39, no. 3 (May 2003): 316–21. http://dx.doi.org/10.1079/ivp2002376.

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Gore, PL, BM Potts, PW Volker, and J. Megalos. "Unilateral Cross-Incompatibility in Eucalyptus: the Case of Hybridisation Between E. globulus and E. nitens." Australian Journal of Botany 38, no. 4 (1990): 383. http://dx.doi.org/10.1071/bt9900383.

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The growth of E. globulus and E. nitens pollen tubes in styles of E. globulus was examined in order to elucidate the site of the unilateral barrier to hybridisation. Pollen tubes of E. nitens failed to grow the full length of the larger E. globulus style. E. globulus pollen tubes grew an average of 1.4 mm per day for the first 4 days, compared with 0.8 mm per day for pollen tubes of E. nitens. From days 4 to 14, the growth of E. nitens pollen tubes slowed to an average of 0.2 mm per day and virtually no growth occurred after day 14. In contrast, E. globulus pollen tubes grew through the style and into the ovary between days 5 and 14. By day 28, at about the time of style abscission, E. nitens tubes had grown only 6 mm, well short of the full length of the E. globulus style (9-10 mm). A similar difference in growth was obtained in vitro where E. nitens pollen tubes were significantly shorter than those of E. globulus. A comparison also including E. ovata, E. urnigera and E. gunnii indicated a significant correlation between style length and in vitro pollen tube length. It is argued that the unilateral cross-incompatibility between E. globulus and E. nitens is due to a structural barrier arising from an inherent limit to pollen tube growth which is associated with pistil size.
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White, Don A., Christopher L. Beadle, Peter J. Sands, Dale Worledge, and John L. Honeysett. "Quantifying the effect of cumulative water stress on stomatal conductance of Eucalyptus globulus and Eucalyptus nitens: a phenomenological approach." Functional Plant Biology 26, no. 1 (1999): 17. http://dx.doi.org/10.1071/pp98023.

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This paper incorporates the cumulative effect of water stress, in a phenomenological model of stomatal conductance of upper canopy foliage (gsu) for Eucalyptus globulus and Eucalyptus nitens. Maximum observed stomatal conductance of irrigated trees was moderated by three functions describing the response of gsu to light, air temperature and vapour pressure deficit. This model explained 70% of the variation in gsu of irrigated trees using the same parameter values for both species. Daily total conductance was calculated for rainfed (Gsu,R) and irrigated (Gsu,I) trees. Linear relationships between the ratio of Gsu,R/G su,I (f(W)) and pre-dawn water potential explained only 46 and 30%, respectively, of variation in f(W) for E. globulus and E. nitens. The average value of pre-dawn water potential for the preceding x days (Sψx) was calculated for a range of values of x. When x was 8 for E. globulus and 20 for E. nitens a single exponential decay function accounted for 70% of variation in f(W) for both species. This result and the number of days over which it was necessary to calculate (Sψx) were consistent with previous studies of the leaf water relations, canopy and sapwood development, and stomatal behaviour of the two species.
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Molina Brand, María Paz, Roberto Ipinza Carmona, Braulio Gutiérrez Caro, Verónica Ingrid Emhart Schmidt, and Nuno Borralho. "Estrategia de mejoramiento genético para la utilización de Eucalyptus nitens como madera sólida. Avances en la selección de árboles." Ciencia & Investigación Forestal 24, no. 1 (July 15, 2018): 33–46. http://dx.doi.org/10.52904/0718-4646.2018.490.

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Eucalyptus nitens (Deane & Maiden) Maiden es una especie de rápido crecimiento originaria del sudeste australiano y de alto interés para el sector forestal chileno, por cuanto constituye una alternativa a Eucalyptus globulus Labill., especialmente en las zonas en que esta última especie se ve limitada por el frío. Considerando el potencial de la especie INFOR, en conjunto con el Grupo Pro Nitens (Asociación de Pequeños y Medianos Propietarios Forestales) y Forestal Mininco (Empresa de la Compañía Manufacturera de Papeles y Cartones CMPC SA), han elaborado una estrategia de mejoramiento genético para la producción de madera sólida orientada a dar sostenibilidad a la pyme forestal.
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30

Gutiérrez Caro, Braulio. "Evaluación inicial de supervivencia y crecimiento de dos ensayos de progenies de individuos selectos de Eucalyptus globulus Labill y E. nitens H. Deane." Ciencia & Investigación Forestal 25, no. 3 (July 15, 2019): 23–34. http://dx.doi.org/10.52904/0718-4646.2019.519.

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Se presentan y describen datos de supervivencia y crecimiento en altura correspondientes a la primera evaluación post establecimiento (después del primer periodo de crecimiento vegetativo en terreno) de dos ensayos de progenies, uno de Eucalyptus globulus y otro de Eucalyptus nitens. En el primer caso se trata de progenies de polinización abierta de clones de un huerto semillero clonal conformado por individuos de E. globulus seleccionados en función de su crecimiento y forma. En el caso de E. nitens se trata de progenies de polinización abierta de árboles seleccionados en un programa de mejoramiento genético para la reducción de las tensiones de crecimiento de la madera.
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31

Niemz, Peter, Silvana Mariani, and Marco Torres. "Einfluss der hydrothermischen Behandlung von Picea abies (L.) Karsten und Eucalyptus nitens(Deane & Maiden) Maiden auf die chemische Zusammensetzung des Holzes | Influence of hydrothermal treatment on the chemical composition of Picea abies (L.)Karsten and Eucalyptus nitens (Deane &Maiden) Maiden." Schweizerische Zeitschrift fur Forstwesen 155, no. 12 (December 1, 2004): 544–47. http://dx.doi.org/10.3188/szf.2004.0544.

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Wood of Picea abies and Eucalyptus nitens was heated for 60 minutes in an autoclave with overheated water vapour at temperatures of 140 °C to 170 °C. Pressure in the autoclave rose with increasing temperature. The chemical composition of the wood was ascertained according to the treatment (relative chemical composition, proportion of extractable substances and pH-value). With increasing temperature the pH-value fell while the proportion of substance extractable in hot water rose. The loss of pentosan due to temperature raise was higher for Picea abies than for Eucalyptus nitens. Meanwhile, the increment of soluble constituents in toluene, in warm water and in 1% NaOH solution was higher for Eucalyptus nitensthan for Picea abies. The proportion of extractable substances increased strongly at temperatures above 140 °C. The equilibrium moisture content and the swelling due to vapour adsorption hardly varied for either species.
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Álvarez, Xana, Ángeles Cancela, Yolanda Merchán, and Ángel Sánchez. "Anthocyanins, Phenolic Compounds, and Antioxidants from Extractions of Six Eucalyptus Species." Applied Sciences 11, no. 21 (October 20, 2021): 9818. http://dx.doi.org/10.3390/app11219818.

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The leaves of Eucalyptus have multiple biological activities such as antimicrobial, antiseptic, antioxidant, and antifungal. A Soxhlet extraction, SLE, and HD were used to obtain extracts from the leaves of six Eucalyptus species, E. globulus, E. oblicua, E. pavaflora, E. camaldulensis, E. viminalis, and E. nitens, and to study their antioxidant capacity. Solvents such as acetone, dichloromethane, ethanol, hexane, methanol, and water were used to study how polarity influences extraction yields. The SLE method achieved higher or similar yields, depending on the species and its composition, than the Soxlet method at a temperature of 50 °C. The highest yields were obtained with E. viminalis with methanol (42.5 wt.%), the highest phenolic content was obtained with E. nitens with methanol (124.17 mg GAE/g of extract), and the highest anthocyanin levels obtained were with E. nitens with hexane (5.05 mg CC/g of extract). E. nitens obtained almost five times more phenolic content than E. globulus; therefore, it is the most promising species. The high content of the compounds analysed confirm the good potential of these species to obtain value-added compounds. Our results demonstrate that the differences in the extract contents depend on the polarity of the solvents used. In addition, the use of these species will reduce the residue in the forest, which is greatly beneficial.
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Opazo-Vega, Alexander, Víctor Rosales-Garcés, and Claudio Oyarzo-Vera. "Non-Destructive Assessment of the Dynamic Elasticity Modulus of Eucalyptus nitens Timber Boards." Materials 14, no. 2 (January 7, 2021): 269. http://dx.doi.org/10.3390/ma14020269.

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Eucalyptus nitens is a fast-growing wood species with a relevant presence in countries like Australia and Chile. The sustainable construction goals have driven the search of structural applications for Eucalyptus nitens; however, this process has been complicated due to the defects usually presented in these timber boards. This study aims to evaluate the dynamic elasticity modulus (Exd) of Eucalyptus nitens timber boards through non-destructive vibration-based tests. Thirty-six timber boards with different levels of knots and cracks were instrumented and tested in a simply supported condition by measuring longitudinal and transverse vibrations. In the first stage, the Exd was calculated globally through simplified normative formulas. Then, in a second stage, the local variability of the Exd was estimated using operational modal analysis (OMA), finite element numerical simulations (FEM), and regional sensitivity analysis (RSA). The positive correlation found between the global static modulus of elasticity and Exd suggests that non-destructive techniques could be used as a reliable and fast alternative for the assessment of bending stiffness. Finally, the proposed method to estimate the local variability of Exdt based on the combination of OMA, FEM, and RSA techniques was useful to improve the structural selection process of timber boards for lightweight social housing floors.
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34

Opazo-Vega, Alexander, Víctor Rosales-Garcés, and Claudio Oyarzo-Vera. "Non-Destructive Assessment of the Dynamic Elasticity Modulus of Eucalyptus nitens Timber Boards." Materials 14, no. 2 (January 7, 2021): 269. http://dx.doi.org/10.3390/ma14020269.

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Eucalyptus nitens is a fast-growing wood species with a relevant presence in countries like Australia and Chile. The sustainable construction goals have driven the search of structural applications for Eucalyptus nitens; however, this process has been complicated due to the defects usually presented in these timber boards. This study aims to evaluate the dynamic elasticity modulus (Exd) of Eucalyptus nitens timber boards through non-destructive vibration-based tests. Thirty-six timber boards with different levels of knots and cracks were instrumented and tested in a simply supported condition by measuring longitudinal and transverse vibrations. In the first stage, the Exd was calculated globally through simplified normative formulas. Then, in a second stage, the local variability of the Exd was estimated using operational modal analysis (OMA), finite element numerical simulations (FEM), and regional sensitivity analysis (RSA). The positive correlation found between the global static modulus of elasticity and Exd suggests that non-destructive techniques could be used as a reliable and fast alternative for the assessment of bending stiffness. Finally, the proposed method to estimate the local variability of Exdt based on the combination of OMA, FEM, and RSA techniques was useful to improve the structural selection process of timber boards for lightweight social housing floors.
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35

Pinto, Heloísa Cintra Alves, Patrícia Anjos Bittencourt Barreto, Emanuela Forestieri da Gama Rodrigues, Francisco Garcia R. Barbosa De Oliveira, Alessandro De Paula, and Aguiberto Ranulfo Amaral. "DECOMPOSIÇÃO DA SERAPILHEIRA FOLIAR DE FLORESTA NATIVA E PLANTIOS DE Pterogyne nitens E Eucalyptus urophylla NO SUDOESTE DA BAHIA." Ciência Florestal 26, no. 4 (December 28, 2016): 1141. http://dx.doi.org/10.5902/1980509825105.

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O processo de decomposição regula o acúmulo de serapilheira e a ciclagem de nutrientes em ecossistemas florestais, sendo fundamental para sua manutenção. O objetivo deste trabalho foi avaliar a dinâmica de decomposição foliar em uma Floresta Estacional Semidecidual Montana e em plantios homogêneos de Pterogyne nitens Tul. e de Eucalyptus urophylla S. T. Blake, localizados no município de Vitória da Conquista, Bahia, Brasil. Para avaliação da decomposição, foram coletadas folhas recém-caídas sobre o solo de árvores e arbustos em cada uma das coberturas estudadas. As folhas foram secas em estufa a 65oC e, após isso, porções de 10 g foram pesadas e colocadas em litter bags, que foram distribuídos aleatoriamente na superfície do piso florestal em cada uma das áreas estudadas. Realizaram-se coletas de cinco litter bags de forma aleatória após 30, 60, 90, 120, 150 e 180 dias da instalação. Com base nas massas obtidas, foram estimados o percentual de massa remanescente, as taxas de decomposição (k) e o tempo de meia-vida do folhedo (t1/2). Para caracterização química, foram separadas três subamostras do material foliar seco, que foram moídas e analisadas, determinando-se os teores de nitrogênio total, carbono, polifenóis, lignina e celulose. Os dados de decomposição foram relacionados com variáveis ambientais (precipitação, temperatura e umidade do ar) e microambientais (temperatura e umidade do solo) referentes ao mês de coleta. O acúmulo total de serapilheira variou entre as áreas estudadas, o maior valor foi observado no plantio de Eucalyptus urophylla (12,7 Mg ha-1), seguido pela floresta nativa (6,9 Mg ha-1) e plantio de Pterogyne nitens (1,1 Mg ha-1). Ao final dos seis meses de avaliação, o Eucalyptus urophylla apresentou a maior massa remanescente (73,6%), seguido da floresta nativa (67,8%) e Pterogyne nitens (46,3%). A constante de decomposição (k) foi maior para a Pterogyne nitens (0,0054 g g-1dia), com menores valores para floresta nativa (0,0016 g g-1dia) e Eucalyptus urophylla (0,0015 g g-1dia). A taxa de decomposição da serapilheira foliar do povoamento de Pterogyne nitens situa-se em uma posição superior em relação às taxas da floresta nativa e do povoamento de Eucalyptus urophylla, o que proporciona à espécie maior capacidade de reciclar matéria orgânica e nutrientes. O processo de decomposição nos ecossistemas estudados é influenciado não apenas pela qualidade do folhedo, mas também pela qualidade do seu microambiente.
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36

Withers, T. M., G. R. Allen, V. S. Patel, D. Satchell, and G. Manley. "Investigating the potential of Eadya paropsidis (Braconidae) from Tasmania as a biocontrol agent for Paropsis charybdis in New Zealand." New Zealand Plant Protection 65 (January 8, 2012): 292. http://dx.doi.org/10.30843/nzpp.2012.65.5404.

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Despite considerable efforts the eucalyptus tortoise beetle Paropsis charybdis continues to defoliate Eucalyptus nitens plantations throughout New Zealand preventing expansion of this forest resource or requiring constant management through aerial insecticide application A parasitoid wasp of the springtime larval stage of the eucalyptus leaf beetle Paropsisterna agricola (Chapuis) (Chrysomelidae) in Tasmania is being investigated as a potential biological control agent for New Zealand The potential agent Eadya paropsidis Huddleston and Short (Braconidae) was caught as adults on the wing from E nitens plantations in northern Tasmania and brought into the laboratory in Hobart for preliminary host specificity testing Using a sequential nochoice test method to examine the response of individual females 9 of the 10 female parasitoids attacked P agricola while 7 of those 9 attacked P charybdis larvae Those P charybdis larvae that were attacked proved to be a highly suitable physiological host for E paropsidis development emerging as a larger sized parasitoid larva from P charybdis than from P agricola This potential agent will be further evaluated in a collaborative project with New Zealand eucalyptus growers and the Sustainable Farming Fund
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37

Pincheira, Matías, and Rafael Alejandro Rubilar Pons. "Efectos de la disponibilidad hídrica y temperatura sobre el despliegue foliar de genotipos de Eucalyptus globulus, Eucalyptus nitens e híbridos con eucaliptus camaldulensis." Ciencia & Investigación Forestal 18, no. 3 (July 12, 2012): 61–74. http://dx.doi.org/10.52904/0718-4646.2012.394.

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Esta investigación analiza el incremento y senescencia foliar de diez genotipos de Eucalyptus, bajo dos condiciones de humedad de suelo, con y sin riego, establecidos en el secano interior de la Región del Biobío. El conjunto incluye un E. nitens de origen semilla; seis E. globulus, dos de baja, dos de media y dos de alta productividad volumétrica; y tres híbridos (E. nitens × E. globulus, E. camaldulensis × E. globulus y E. nitens × E. camaldulensis). Para ello, en una muestra de ramas seleccionadas en la primera temporada de crecimiento en forma no destructiva se cuantificó los incrementos y decrecimientos absolutos y relativos de área foliar, por medio de relaciones alométricas establecidas entre las dimensiones lineales de hoja y rama, y su área foliar individual y total, respectivamente. El objetivo general del estudio fue establecer la fenología y el efecto de la disponibilidad hídrica y temperatura sobre el despliegue foliar de genotipos de Eucalyptus globulus, E. nitens e híbridos con E. camaldulensis. Sin riego se identificaron cuatro periodos en el despliegue de superficie fotosintética, incremento inicial después del establecimiento, receso vegetativo, crecimiento de segunda temporada y de senescencia y abscisión foliar. Con riego se observaron los dos primeros periodos, sin ser notoria una reactivación del desarrollo de segunda temporada, y finalmente el cuarto de senescencia. Los individuos del sitio con riego resultaron mucho más sensibles a cambios climáticos, cuya fase de recesión absoluta comenzó 30 días antes. Evaluado el efecto de la temperatura media acumulada (°C) sobre el despliegue foliar de rama (cm2), fueron identificados grupos de genotipos con alta y baja sensibilidad a bajas temperaturas.
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38

Pinilla Suárez, Juan Carlos. "Modelos de crecimiento para Eucalyptus globulus en monte bajo entre las regiones de Valparaíso y Los Lagos." Ciencia & Investigación Forestal 15, no. 2 (July 11, 2009): 207–34. http://dx.doi.org/10.52904/0718-4646.2009.323.

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El Instituto Forestal esta desarrollando investigaciones sobre manejo en bosque alto y productos de mayor valor, especialmente para Eucalyptus nitens y para manejo en monte alto y posterior monte bajo para Eucalyptus globulus. El presente trabajo entrega resultados obtenidos hasta ahora para el segundo de estos casos, entre las regiones de Valparaíso y Los Lagos
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39

Close, Dugald C., Chris L. Beadle, Greg K. Holz, and Philip H. Brown. "Effect of shadecloth tree shelters on cold-induced photoinhibition, foliar anthocyanin and growth of Eucalyptus globulus and E. nitens seedlings during establishment." Australian Journal of Botany 50, no. 1 (2002): 15. http://dx.doi.org/10.1071/bt01038.

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The effects of shadecloth tree shelters on cold-induced photoinhibition, foliar anthocyanin and growth of Eucalyptus globulus Labill. and Eucalyptus nitens (Deane &amp; Maiden) Maiden seedlings were assessed between planting (in early spring) and the age of 23 weeks. The experimental site was at 350 m above sea level (asl), which is considered marginal for establishment of E. globulus (but not E. nitens) plantations in Tasmania because of low mean minimum temperatures. Conditions within 3 weeks of planting induced severe photoinhibition in non-shaded seedlings. This was associated with increased anthocyanin and photodamage in non-shaded E. nitens and E. globulus. As a result, there was 20&percnt; mortality in non-shaded E. globulus. In contrast, shaded seedlings of both species had levels of photoinhibition and anthocyanin that were largely similar to those before planting and there was no photodamage. Levels of anthocyanin indicated that its synthesis responded to the severity of photoinhibition. Height growth and levels of mortality indicated that cold-induced photoinhibition, and not frost tolerance alone, determines the range of environments where E. globulus can be successfully planted. In contrast, the tolerance of E. nitens seedlings to cold-induced photoinhibition may be a factor in the demonstrated success of this species as a high-altitude plantation species.
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40

Barbour, R. C., B. M. Potts, and R. E. Vaillancourt. "Gene flow between introduced and native Eucalyptus species: crossability of native Tasmanian species with exotic E. nitens." Australian Journal of Botany 53, no. 5 (2005): 465. http://dx.doi.org/10.1071/bt05021.

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Eucalyptus nitens (Deane & Maiden) Maiden has been extensively introduced to the island of Tasmania for plantation purposes. Natural hybridisation with two native species has already been confirmed and this study aimed to determine which other Tasmanian native species could potentially hybridise with E. nitens. Controlled and supplementary pollinations with E. nitens pollen were undertaken on all Tasmanian native species that are potentially at risk of exotic gene flow and hence genetic pollution. Across the seven species tested by using controlled pollinations, seed set per flower, following E. nitens pollinations, was significantly less than for intraspecific outcross pollinations. No significant differences were evident in the percentage of seed that germinated or the percentage of germinants that grew into healthy seedlings in the glasshouse. Hybridity was verified by morphometric analyses and F1 hybrid seedlings were clearly differentiated from parental species and generally intermediate in morphology. Supplementary E. nitens pollination of open-pollinated native flowers was conducted to simulate natural pollination where pollen competition would occur. Seven of the fifteen species tested produced F1 hybrids in this case; however, further crossing is required to verify failed cross combinations. Although E. nitens can potentially hybridise with many native species, the results from both supplementary and controlled pollinations suggest the presence of post-pollination barriers of varying strength that need to be considered in assessing the risk of exotic gene flow from plantations.
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41

Pérez, S., C. J. Renedo, A. Ortiz, M. Mañana, D. Silió, and J. Peredo. "Comparison of energy potential of the eucalyptus globulus and the eucalyptus nitens." Renewable Energy and Power Quality Journal 1, no. 04 (April 2006): 196–200. http://dx.doi.org/10.24084/repqj04.285.

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42

Smith, H., M. J. Wingfield, and O. Petrini. "Botryosphaeria dothidea endophytic in Eucalyptus grandis and Eucalyptus nitens in South Africa." Forest Ecology and Management 89, no. 1-3 (December 1996): 189–95. http://dx.doi.org/10.1016/s0378-1127(96)03847-9.

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43

Jofré, María Paz, Darcy Ríos, José Becerra, and Manuel Sánchez-Olate. "Caracterización fisiológica del enraizamiento in vitro de Eucalyptus nitens y Eucalyptus globulus." Gayana. Botánica 73, no. 2 (December 2016): 421–29. http://dx.doi.org/10.4067/s0717-66432016000200421.

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44

Eyles, Alieta, Noel W. Davies, and Caroline Mohammed. "Wound wood formation in Eucalyptus globulus and Eucalyptus nitens: anatomy and chemistry." Canadian Journal of Forest Research 33, no. 12 (December 1, 2003): 2331–39. http://dx.doi.org/10.1139/x03-149.

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The wound-associated wood that developed 17 months following artificial xylem injury in Eucalyptus globulus (Labill) and Eucalyptus nitens (Maiden) was examined anatomically and chemically. This new tissue located immediately adjacent to the wound site and termed "wound wood" was highly variable consisting of callus, altered wood of increased parenchyma density, and dark extractives, visible to the naked eye. Subsequent chemical analysis of crude wound wood extracts by HPLC coupled to negative ion electrospray mass spectrometry revealed the presence of a diverse range of polyphenolic compounds including hydrolysable tannins, proanthocyanidins, flavanone glycosides, and formylated phloroglucinol compounds. A number of polyphenols were unequivocally identified including engelitin, pedunculagin, and tellimagrandin I. Other compounds present in wound wood include various hydroxystilbene glycosides and volatile terpenes. The importance of the diverse range of secondary metabolites detected in wound wood is discussed in relation to tree wound repair responses.
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45

Prado D., José Antonio, Juan Carlos Bañados M., and Andrés Bello D. "Antecedentes sobre la capacidad de retoñación de algunas especies del género Eucalyptus en Chile." Ciencia & Investigación Forestal 4, no. 2 (July 6, 1990): 183–90. http://dx.doi.org/10.52904/0718-4646.1990.139.

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Se analiza la capacidad de retoñación de 5 especies del género Eucalyptus, E. delegatensis, E. globulus ssp. globulus, E. nitens, E. regnans y E. viminalis. Un año después de la corta sólo E. regnans no presentaba una retoñación suficiente como para asegurar la siguiente rotación de monte bajo. Las otras especies retoñaron bien, incluso E. nitens y E. delegatensis, especies que tradicionalmente se han considerado con ciertas limitaciones para rebrotar después de la corta.
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46

Adams, P. R., R. Musk, and R. Blake. "Establishing Eucalyptus nitens plantations using controlled-release fertilisers." Australian Forestry 80, no. 5 (October 2, 2017): 309–16. http://dx.doi.org/10.1080/00049158.2017.1387995.

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47

ANANIAS, Rub,n A. "Drying of Eucalyptus nitens for solid wood products." Impact 2018, no. 6 (August 21, 2018): 43–44. http://dx.doi.org/10.21820/23987073.2018.6.43.

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48

Byrne, M., G. F. Moran, J. C. Murrell, and W. N. Tibbits. "Detection and inheritance of RFLPs in Eucalyptus nitens." Theoretical and Applied Genetics 89, no. 4 (October 1994): 397–402. http://dx.doi.org/10.1007/bf00225372.

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49

Liang, Yingwei, Assaad Taoum, Nathan Kotlarewski, Andrew Chan, and Damien Holloway. "Behavior of Cross-Laminated Timber Panels Made from Fibre-Managed Eucalyptus nitens under Short-Term Serviceability Loads." Buildings 13, no. 1 (January 15, 2023): 245. http://dx.doi.org/10.3390/buildings13010245.

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Abstract:
In this study, the preliminary serviceability performance of cross-laminated timber (CLT) panels constructed from fibre-managed Eucalyptus nitens (E. nitens) was investigated via bending and vibration tests. Linear four-point bending tests were performed to determine the stiffness and deflection of all CLT panels under serviceability loads. The dynamic response of CLT panels was tested using a basketball and an accelerometer. The fundamental natural frequencies of all tested panels were above the minimum frequency limit (8 Hz) when extrapolated to spans of up to 4.4 m. The configurations of E. nitens CLT panels were based on different modulus of elasticity (MOE) values for each board. Using higher MOE timber boards as the top and bottom layers can significantly increase the serviceability performance of both bending and vibration tests. The same experiments were carried out on two CLT panels made of strength class C24 Spruce-Pine-Fir to compare the serviceability performance of E. nitens CLT. The results demonstrated that E. nitens is a reliable resource for CLT manufacturing, and exhibits better serviceability performance compared to Spruce CLT. This provides more sustainable options for a species traditionally destined for pulp.
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50

Withers, T. M., M. C. Watson, M. S. Watt, T. L. Nelson, L. A. Harper, and M. R. H. Hurst. "Laboratory bioassays of new synthetic and microbial insecticides to control Eucalyptus tortoise beetle Paropsis charybdis." New Zealand Plant Protection 66 (January 8, 2013): 138–47. http://dx.doi.org/10.30843/nzpp.2013.66.5570.

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Abstract:
Paropsis charybdis or eucalyptus tortoise beetle is (one of) the most significant pests of eucalypts in New Zealand It severely defoliates Eucalyptus nitens and Eucalyptus globulus plantations leaving heavilydamaged trees with reduced growth and poor form Laboratory bioassays of new synthetic and microbial insecticides were undertaken to identify management options compatible with biological control The current insecticide used for operational control alphacypermethrin was a positive control Of the products tested spinetoram (Sparta) gave the most promising results (100 mortality after 14 days) for control of adult P charybdis Spinetoram and spinosad (Success Naturalyte) the microbial control agents Beauveria bassiana (F305 ex Botanigard) and Bacillus thuringiensis var tenebrionis and the enterobacterium Yersinia entomophaga all resulted in high mortality of larval P charybdis after 4 days Targeting larvae alone may not be economically viable leaving spinetoram as the only possible additional insecticide for managing P charybdis Potential barriers of cost application and nontarget impacts are yet to be addressed
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