Within and Between-Tree Variation in Growth Ring Width of Pinus oocarpa Wood
نویسندگان
چکیده
منابع مشابه
Climatic variation and tree-ring structure in conifers: empirical and mechanistic models of tree-ring width, number of cells, cell size, cell-wall thickness and wood density
Variations in tree-ring structure are simulated with (1) an empirical model using monthly climatic data as statistical predictors and (2) a mechanisbc model using daily climatic data as growth limiting conditions. The empirical model calibrates standardized ring-width and density chronologies of tree-rings with monthly temperature, precipitation or Palmer Drought Severity Index. The empirical m...
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We examined the relationship among ambient and manipulated precipitation, wood chemistry, and their relationship with radial growth for two oak species in eastern Tennessee. The study took place on the Walker Branch Throughfall Displacement Experiment (TDE) site, located at the Oak Ridge National Laboratory in Oak Ridge, TN. Two dominant species, white oak (Quercus alba) and chestnut oak (Querc...
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Influence of wood density in tree-ring based annual productivity assessments and its errors in Norway spruce O. Bouriaud, M. Teodosiu, A. V. Kirdyanov, and C. Wirth Forest Research and Management Institute, Station Câmpulung Moldovenesc, Calea Bucovinei 73b, 725100 Câmpulung Moldovenesc, Romania V. N. Sukachev Institute of Forest SB RAS, Akademgorodok, Krasnoyarsk, 660036 Russia Institute of Bi...
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The focus of the current project was to establish somatic embryogenesis protocols for the tropical pine species Pinus oocarpa using immature zygotic embryos (ZEs) as explants. Somatic embryogenesis is best supported by mimicking natural seed-embryo developmental conditions, through a tissue culture medium formulation based on the mineral content of the seed nutritive tissue [megagametophyte (MG...
متن کاملTrypanocidal activity of oleoresin and terpenoids isolated from Pinus oocarpa.
Fractionation with n-hexane/ethyl acetate (1:1 v/v) by open column chromatography of the oleoresin from Pinus oocarpa Schiede yielded two diterpenes, pimaric acid (1) and dehydroabietic acid (5), the sesquiterpene longifolene (3) and a diterpenic mixture containing pimaric acid (1), isopimaric acid (4) and dehydroabietic acid (5). Subsequently, the isolated compounds, the mixture of 1, 4 and 5,...
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ژورنال
عنوان ژورنال: International Journal of Environmental Sciences & Natural Resources
سال: 2018
ISSN: 2572-1119
DOI: 10.19080/ijesnr.2018.13.555854