Báo cáo lâm nghiệp: "Ionic interactions between precipitation and leaf cuticles" ppt
Báo cáo lâm nghiệp: "Ionic interactions between precipitation and leaf cuticles" ppt
... alt="" Ionic interactions between precipitation and leaf cuticlesT. ScherbatskoyUniversity of Vermont, Botany Department, Burlington, VT 05405, U.S.A.IntroductionThe leaf cuticle ... interactions between leaf surfaces and precipitation, particularly the role of the leaf cuticle in mediating ion transport into and out of the leaves.Materials and MethodsIonic ... rate-limiting barrier controlling the movement ofsolutes between precipitation and the leaf interior, but the mechanisms and rates bywhich ions diffuse through the cuticleremain...
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Báo cáo lâm nghiệp: " Sessile oak seedling fertilization and leaf mineral composition in western France" docx
... DISCUSSION AND CONCLUSIONThese experiments must be interpreted, onthe one hand, in the light of growth modifi-cations, and, on the other hand, in the lightof the leaf composition. ... 1989 and 1992.Statistical tests were performed from the meanheights or height increments of each plot(Snedecor test). Leaf samples were taken inAugust 1989 and 1991 and ... samples werecollected in August 1983 and 1987, and analysedas in experiment 1.Original articleSessile oak seedling fertilization and leaf mineral composition in western FranceM...
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Báo cáo lâm nghiệp: "Differences in morphological and physiological responses to water-logging between two sympatric oak species" doc
... and ethanolic fermentation in the roots of two wetland and non-wetland species after commencement of hypoxia, Physiol.Plant. 104 (1998) 81–86.[4] Albrecht G., Mustroph A., Fox T.C., Sugar and ... towater-logging and associated root hypoxia: effects on water rela-tions and photosynthesis, Ann. Sci. For. 51 (1994) 417–429.[23] Dreyer E., Colin-Belgrand M., Biron P., Photosynthesis and shootwater ... by the soil properties: Q. petraeais found on deep and well drained and rather acidic soils whileQ. robur favours deep and fertile bottomland soils with some-times large levels of hydromorphia...
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Báo cáo lâm nghiệp: " Natural hybridization between cultivated poplars and their wild relatives: evidence and consequences for native poplar populations" pdf
... producednearly two and four times as many ramets from root sprouts asP. angustifolia and P. fremontii, respectively. Extensive vari-ability in viability and fertility is also observed within and between ... differentiate between P. deltoides, P. nigra and P. × canadensis [10, 11, 67, 74, 100].The enzyme loci Aco-3 and Mdh-3 were found diagnostic fordifferentiating between P. alba, P. tremula and their ... isolation mech-anisms (pre and post zygotic) are able to limit hybridization inpoplars, the extent and differences between natural and anthro-pogenic hybridization, and if current approaches...
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Báo cáo lâm nghiệp: "Chromosomal differentiation between Pinus heldreichii and Pinus nigra" pptx
... withcentromeric and intercalar bands on short arm (pairs 2, 7, and 8), chromosome pairs with centromeric and intercalar bands onlong arm (pairs 5, 9 and 12) and chromosome pairs with cen-tromeric band and ... CMA bands (pairs 1,4, 7 and 8), 2 with only centromeric bands (pairs 11 and 12) and 3 pairs (2, 5 and 10) having both intercalary and centro-meric bands (Figs. 1 (2a) and 2B). In karyotype of ... bands (2, 5, 6 and 9) and one chromosome pair (7)with both intercalary and centromeric bands (Figs. 1 (1a) and 2A). Sporadically, some individuals were characterized with13th intercalary band...
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Báo cáo lâm nghiệp:"Genetic correlations between wood density components in Pinus pinaster Ait." pptx
... coefficients are globally low and positivelycorrelated genetically with RD, MND, EWD and LWP,negatively with HI, and irregular with MXD and LWD. Theantagonism between growth rate and wood density mentionedfor ... circumstances and cannotobtain credible conclusions about genetic relationship between HI and other density components, because the differences between families are not significant (P >0.05) and ... traits was enhanced by Zobel and van Buijtenen [81] and also confirmed for Picea mariana[74, 76] and Pseudotsuga menziesii [69].On the other hand Latewood components (MXD and LWD)not only reveal...
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Báo cáo lâm nghiệp:"The relationship between vegetation management and the wood and pulping properties of a Eucalyptus hybrid clone" pdf
... grandis plantations.3.5. Comparison between the rate of tree growth and density and extractable contentIn order to determine if there was any relationship between the rate of tree growth and ... treatments on growth and pulp properties ofEucalyptus grandis stands established on infertile soils of theZululand coastal plain, S. Afr. For. J. 192 (2001) 9–18.[21] Farrington A., Wood and digester ... existing land base, or through theacquisition of additional land [6, 31]. In South Africa, present and future land use policies are likely to restrict the conversionof non-afforested land to plantations....
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Báo cáo lâm nghiệp: "Processes of loss, recruitment, and increment in stands of a primeval character in selected areas of the Pieniny National Park (southern Poland" ppt
... and other broadleaf spe-cies, and 60 fir trees). Total volume of this loss was about 135 m3/ha. Recruitment numbered 24 trees per hectare (6 trees of beech and other broadleaf species, and ... zone, and rep-resenting the association Carici-Fagetum abietetosum (sample plots Facimiech and Walusiówka) and the community of a transitory character between Dentario glandulosae-Fagetum and ... the stand was 1.4% (Table 3). Average volume of a dead fir tree was 1.38 m3. Volume incre-ment reached about 9.4 m3/ha/year (Table 2), and the ratio between annual volume loss and stand volume...
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Báo cáo lâm nghiệp: "Effects of drainage treatment and stand growth on changes in runoff components from a forested watershed" pps
... interflow and overland flow). e direct flow Effects of drainage treatment and stand growth on changes in runoff components from a forested watershedV. Č, F. Š, D. KForestry and Game ... (base flow, subsurface flow and overland flow, in other words slow, accelerated and rapid flows). Comparing the amount of slow and rapid runoff constituents (89.5–99.4% and 0.6–10.5%, respectively), ... 12.1%). For peakflow rates between 20 and 60 ls–1, we found an obvious similarity in the percentage of runoff con-stituents in both the calibration and the hydrology and stand-stabilization periods...
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Báo cáo lâm nghiệp: "Evaluation of the growth and health status of selected clone mixtures in comparison with ordinary planting stock" docx
... progenies from seed orchards and natural stands. Scandinavian Jour-nal of Forest Research, 15: 309–317.H C.D.B., S K.B. (2000): Frost hardiness, height, and dormancy of 15 short-day, ... Research, 22: 335–361.J B. (1999): Stand establishment and early growth of planted Pinus sylvestris and Picea abies related to microsite conditions. Scandinavian Journal of Forest Research, ... selection of tolerant clones by situating ortet plantations and clone plantations into extreme mountain conditions. MATERIAL AND METHODSGrowth and health status were evaluated in parent trees in...
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