Báo cáo lâm nghiệp: "Molecular markers provide evidence for long-distance planting material transfer during plantation establishment of Dalbergia sissoo Roxb in Nepal" pot

... the origin of D. sissoo plan- tations in Nepal. In particular, we addressed the following ques- tion: Is there evidence for long-distant transfer of seeds for plantation establishment? 2. MATERIAL ... reproductive material. Our results sup- port this view by providing evidence for long-distance seed transfer during plantation establishment. Small relics...

Ngày tải lên: 08/08/2014, 01:22

... blunt cutting edge does not cut the material in the process of chip cutting. It is mainly in the plain passing the lowest point of the cutting edge but it is also in the plain lying a little ... deformation of a mass in the surroundings of a cutting edge, – forces necessary for deflection of chips and sup - pression of chip friction against the leading edge of the t...

Ngày tải lên: 07/08/2014, 03:22

... harvesting two adjacent strips during the same period. Har- vest constraints, which are often required in forest operations, stipulate a non-declining, even fl ow of timber. Such constraints ... eligible for harvest at the beginning of the fi rst period. Of these strips, 234 were cut in the fi rst period, 271 in the second, and 279 in the third (Table 1).  e remain- ing...

Ngày tải lên: 07/08/2014, 10:21

Ngày tải lên: 07/08/2014, 16:20

... ( 1 / 2 LPC) for bud growth. The induction of adventitious shoots on the cotyledons required the presence of cytokinin in the culture medium. Except for iPR and RZ, the other assayed cytokinins induced ... the length of the exposure to growth regulators. Although the number of buds formed in each cotyledon was lower in explants incubated for 4 or 8 d in 44.4 µMBA than i...

Ngày tải lên: 07/08/2014, 16:20

... level of 20 min per tree to something in the order of one minute per tree, thus enabling the method to become more efficient and potentially usable in routine forest inventory. With improvements in ... moving the total station. The results from the comparison indicated a good level of precision for the first 12 m of the stem (interval of uncertainty ± 7.2 mm) and lower for he...

Ngày tải lên: 07/08/2014, 16:21

... negative in uence on the pulping quality increas- ing chemical consumption in pulping and bleaching, decreas- ing pulp yield and pulp brightness, and increasing process costs [20]. For the pulp ... variability of sapwood and heartwood in four commercial plantations of E. globulus at the time of harvest for pulp pro- duction, and analyse the in uence of radial tree growth in...

Ngày tải lên: 07/08/2014, 16:21

... Montero G., Inter-regional variability in site index models for even-aged stands of stone pine (Pinus pinea L.) in Spain, Ann. For. Sci. 60 (2003) 259–269. [13] Carmean W.H., Site index curves for upland ... error of predicting stand volume is min- imised, the lack of necessary information forced us to conclude that a reference age of 20 years is appropriate for Pinus pinas...

Ngày tải lên: 08/08/2014, 00:21

... al. propagated material: in poplar for bud phenology [15], in Salix for growth [29] and in oak for leaf morphology [27]. Benefits of vegetatively propagated material include the possibility of detecting ... fixed at 0.01 for the N tests, corresponding to a prob- ability of 0.0001 for a single test using the Bonferroni correction. Graphs of linkage maps and QTL were...

Ngày tải lên: 08/08/2014, 00:22

... season of the year changes. In the context of the inter-relationship between the tree and its environment, it is of interest to discover which of the many potentially informative signals originating ... for the accumulation of the indicated secondary vascular cell types. For periclinal divisions in the cambium, and for the increase in the number of xylem fibres and ves...

Ngày tải lên: 08/08/2014, 00:22