Báo cáo lâm nghiệp: " Somatic embryos from callus of von Salix viminalis" doc

... Somatic embryos from callus of Salix viminalis L. L. Grönroos, S. von Arnold T. Ericsson Department of Physiological Botany, Uppsala University, ... propagated via somatic embryogenesis. In order to facilitate identification of embryogenic cal- lus obtained from Salix in the future, the embryogenic callus and the other callus types ... 6...

Ngày tải lên: 09/08/2014, 04:20

... of plant material for the testing of insecticidal or fungicidal transgene efficiency. In this report, transgenic embryogenic tissue was obtained after the transformation of somatic embryos of ... concentration of 50mM. e somatic embryos were cultivated in this solution for 45 min at 23°C on a shaker (100rpm) and then they were transferred onto L2 medium. After 48 hour...

Ngày tải lên: 07/08/2014, 10:21

... calculations of the amount of carbon tradable in forest sector [30]. This could in- crease the NPV of alternative objectives, because models of carbon sequestration incorporating processing of wood ... revenues The tradable unit of CO 2 is the biomass equivalent of one met- ric ton of CO 2 (1 t CO 2 e). Carbon was assumed to make up 46% of oven dry tree biomass [29]. Every t...

Ngày tải lên: 07/08/2014, 16:20

... parts of description of viruses or virus-like particles in diseased oak trees. Oak trees of north German forests and nurs- eries were marked and sampled. Some of these ... degenerated twigs and suf- fered from a conspicuous loss of vigor, which could be characterized by a reduc- tion of foliar and internodal length. Distinct from similar...

Ngày tải lên: 08/08/2014, 18:21

... the effects of the choice of the auxiliary variable, of the deletion of segments, and of the stratification of the tree crown on the sampling error were analyzed. In the analysis, trees of three ... population of paths of each tree (eq. [1]) and the true totals and variances of the target variables and the estimates of the totals, respectively. Choice of the auxiliary...

Ngày tải lên: 07/08/2014, 03:22

... sex, and sex condition. From this material the population of Cg was evaluated. e relative abundance of Cg rA was expressed as the number of individuals trapped per number of trap-nights. Data ... variable mixture of forest stands of various woody species and age with a permanent supply of food for pheasants and roe deer (RB). e population fluctuations in four years of re...

Ngày tải lên: 07/08/2014, 03:22

... 17.5/82.5 Number of feeding stages (= number of stages of break in feeding) 15 36 Period of one stage of feeding (min) 3.5 7 Period of one stage of break in feeding (min) 94 34 Number of migrations from ... per group Compact groups of eggs Open groups of eggs Groups total number of groups/number of eggs (%) number of groups/number of eggs (%) number of gro...

Ngày tải lên: 07/08/2014, 03:22

... there three peaks in the course of monitored years depending on the crop of small-seed species in 2001 and of acorns in 2003 and 2006. e preference of small seeds of tree species can influence ... other authors, a large crop of tree seeds in forests positively affects the dynamics of seed feeding of small mammals in the year after “seed year”. In RB, the population of As...

Ngày tải lên: 07/08/2014, 03:22

... pro- portion of fi ne roots in the root system and the ra- tio of leaf area to seedling height.  e measurement of chlorophyll fl uorescence showed lower values of the maximum quantum yield of photosystem ... processes of the capture and transmission of radiant energy quanta.  e long- term eff ect of excessive PAR leads to the photode- struction of assimilatory organs when...

Ngày tải lên: 07/08/2014, 10:21

... the calcaneal joint to the tip of the hoof, ear length (LA) from the root of the ear to the tip, and height at the withers (AC) as the distance from the tip of the fore leg to the highest ... (months) root of the tail, tail length (LCd) from the root of the tail to the tip where the tail vertebrae can still be found (without the ending and often extended hairs), metatar...

Ngày tải lên: 07/08/2014, 10:21