Báo cáo lâm nghiệp: " The role of glutamine synthetase, glutamate synthase and glutamate dehydrogenase in ammonia assimilation by the mycorrhizal fungus Pisolithus tinctorius" ppt
Báo cáo lâm nghiệp: "Effects of microsite variation on growth and adaptive traits in a beech provenance trial." pps
... for the modelling of autumn discoloration. e length of the vegetation period was then assessed as the diff erence between the midpoints of autumn discoloration and spring fl ushing.As the ... 2-years-old seedlings of 32 provenances covering practical-ly the whole distribution range of beech in Europe, using the RCB design (three adjacent blocks). In 2007 (at the age of the trial of 11 years), ... observed in the centre of the plot, whereas they decrease to-wards the margins, in uenced microclimatically by the adjacent beech stands. Consequently, soil moisture is high along the southern...
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Báo cáo lâm nghiệp: " The role of glutamine synthetase, glutamate synthase and glutamate dehydrogenase in ammonia assimilation by the mycorrhizal fungus Pisolithus tinctorius" ppt
... The role of glutamine synthetase, glutamate synthase and glutamate dehydrogenase in ammonia assimilation by the mycorrhizal fungus Pisolithus tinctoriusJ.L. KershawG.R. ... inhi-bition by MSX. The increase in the glutamate pool appeared to indicate assi-milation of ammonia into glutamate by GDH activity.Inhibition of glutamate synthase by aza-serine ... noincorporation of ammonia into glutamate Ammonia was assimilated primarily into the amide of glutamine by the activity of GS, and transferred to glutamate- amino by glutamate synthase...
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Báo cáo lâm nghiệp: "Current possibilities of using Norway spruce (Picea abies [L.] Karst.) in forest regeneration in the air-polluted region of the northeastern Krušné hory Mts" doc
... parts of the stands) than in the Krušné hory Mts. (with underplanting realized inside the stands) was also a reason for the relative failure of underplanting in the existing spruce stands in the ... smoothing of total heights and increments of underplanting in the current Norway spruce stands is considerably affected by the high degree of area stocking H-10-1.00 (Figs. 1 and 2). Yet the ... reach the same values as in the Bohemian-Moravian Upland. Better access of lateral light into the stands growing in the Bohemian-Mora-vian Upland (with underplanting realized in margin-al...
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Báo cáo lâm nghiệp: "Effect of species composition, stand density and site index on the basal area increment of oak trees (Quercus sp.) in mixed stands with beech (Fagus sylvatica L.) in northern France" potx
... selectionthinnings, but on stand-related thinning regimes. This partlyexplains the linear relation of ∆g and DBH per treatment. The DBH-range of the stands available has to be regarded as well. The integration ... this by using the self-thinning rule (Rdi, Eq. (3)) formulated by Reineke [49]. For parameters of the self-thinning rule, we usedthose suggested by Dhôte and Le Moguédec [15] for oak and beech in ... analy-sis of oak and beech in mixed stands with different minglingpatterns showed that oak had a higher chance of surviving in stands dominated by beech when clustered in groups [22]. An-other factor...
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Báo cáo lâm nghiệp: "Seasonal changes of plant hydraulics, water relations and growth of Aesculus hippocastanum seedlings infested by the leafminer Cameraria ohridella" ppt
... vapour of infested seedlings was reduced with respect to controls, both in mined and in still green portions of attacked leaves. In July and August, the hydraulic resistance of infested seedlings ... three-year old seedlings were used in the present study, so that no information can be inferred from ourdata about the risk of mortality associated with the infestation of seedlings during the very early ... emerging from the leaf litter were observed in the “infested” section starting from the end of April. Mines became apparent starting from May(Fig. 1) but only in June did the leaf mined area increase...
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Báo cáo lâm nghiệp: "Spatial dynamics of late successional species under Pinus nigra stands in the northern Apennines (Italy)" pps
... (Austrianblack pine) plantations, despite of the large diffusion and importance of these stands in many regions of southern Europe.During the first half of 20th century about 100 000 ha in the Apennines ... for the supremacy of this species in the understorey environment of Pinus nigra stands [12, 23, 45]. The presence of Castanea sativa and Picea abies saplings in the understorey of plot 1 and ... to infer on the nature of the causal factors. In plot 1 the positive autocorrelation for the age of saplings indicates that the clumped pattern is the result of aggregation nuclei in which the...
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Báo cáo lâm nghiệp: " Seed germination of Quercus robur, Q. pyrenaica and Q. ilex and the effects of smoke, heat, ash and charcoal" ppsx
... combi-nation of eliminating auto-allelopathy and non-inhibition of germination by fire factors. On the other hand, from the meth-odological point of view, it can be concluded that the germina-tion of ... Quercus germination 209during the first weeks, followed by smaller peaks up to the 45thweek in the case of the Smoke treatment and up to the 41st week in the rest of the treatments. The heat treatments ... Smoke–5 min (increase of 24%). In the treatmentsSmoke–10 min and Smoke–15 min the increases are moremoderate, 18.4 and 16%, respectively. Finally, with the othertwo treatments, the germination...
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Báo cáo lâm nghiệp: "Effects of selective thinning on growth and development of beech (Fagus sylvatica L.) forest stands in south-eastern Slovenia" docx
... selected. The intensity of thinning can be indicated by the standardized standdensity index (SSDI), which is the quotient between the SDI of the thinned stand and the SDI of the control stand [37] ... again during the lastthinning. In the T2, 258 crop trees were chosen in the first thinning, and only 62% of these trees were chosen again during the last thinning. Only crownsuppression and ... number of crop (selected) trees in the first thinning and thinning intensities, taking account of economical factors [46, 51]. In Slovenia, selective thinning is the main type of thin-ning [34]....
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Báo cáo lâm nghiệp: "Morphological evaluation of cork oak (Quercus suber): Mediterranean provenance variability in Tunisia" doc
... Hokanson S.C., Isebrands J.G., Jensen R.J., Hancock J.F., Isozymevariation in oaks of the Apostle islands in Wisconsin: genetic struc-ture and levels of inbreeding in Quercus rubra and Q. ellipsoidalis(Fagaceae), ... alltraits including population and provenance effect using the followingmodel: Yijk= µ + Pi+ Bij+ Eijk.Where Yijk: the phenotypic value of the trait Y in the Kth plant of the jth provenance ... 4.02). The null hypothesis refers toabsence of association between the elements of the pairs of matrices. The matrix of geographical distances was calculated by convertinggeographical coordinates...
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Báo cáo lâm nghiệp: "Online control of wood peeling process: Acoustical and vibratory measurements of lathe checks frequency" ppt
... peeling lathes in real time.One of the most comprehensive study was carried out by Thibaut [14] for the theoretical understanding and modelling of the process. Marchal et Negri [11] and Décès-Petit ... source and in the direction of the first natural vibration mode of the knife. All these conclusions validate the use of this techniqueto characterize lathe check frequency.4.2. The use of lathe ... Links between wood machining phenom-ena and wood mechanical properties : The case of 0◦/90◦orthog-onal cutting of green wood, Proceedings of the 2nd InternationalSymposium on Wood Machining,...
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