Báo cáo lâm nghiệp: "Influence of the moisture content of fo

Báo cáo lâm nghiệp: "Influence of the moisture content of forest tree its response to different viability tests pollen on" pdf

... than the best one. a Data from unpublished results. b Hydration of pollen at 100% RH for 16 h at 25’C. Influence of the moisture content of forest tree pollen on its response ... Conclusion Correlating the response of a particular pollen lot to in vivo fertility is largely dependent upon its moisture content. Since most lots...

Ngày tải lên : 09/08/2014, 04:20

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Báo cáo lâm nghiệp: "Changes in the mycorrhizal status of some mountain spruce forests" potx

... comprise the following parameters: density of active and non- active mycorrhizae, their ratio, the total number of mycorrhizae, weight of dry matter of roots up to 1 mm, numbers of mycorrhizae ... approximately in the same distance (about 1 m) from the stem of ﬁve selected trees. e cylinder of the soil probe used for this purpose had the inner diameter of 6 c...

Ngày tải lên : 07/08/2014, 03:22

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Báo cáo lâm nghiệp: "Arginine and the shade tolerance of white spruce saplings entering winter dormancy" ppsx

... factors, other than the eﬀects of shade, were small so that the major variable aﬀecting sapling growth was the quantity of light (L 1969). In full light, the lag between monthly hours of ... insects, and frost damage. During the breaking of dormancy in spring, the removal of inhibitory guanidino compounds provides sources of N for the renewed synthesis of...

Ngày tải lên : 07/08/2014, 10:21

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Báo cáo lâm nghiệp: "Nutrients in the aboveground biomass of substitute tree species stand with respect to thinning – blue spruce (Picea pungens Engelm.)" doc

... air-polluted areas since the sixties of the last century. In the Forest Region of the Krušné hory Mts., the substitute tree species stands took up about 36% of forest land area (UHÚL 2007), ... removal of aboveground biomass (54% of trees, 40% of basal area at the age of 16 years) represented a loss of ca 8.7 thousand kg/ha of total biomass, which contai...

Ngày tải lên : 07/08/2014, 10:21

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Báo cáo lâm nghiệp: " Sicily represents the Italian reservoir of chloroplast DNA diversity of Quercus ilex L. (Fagaceae)" pptx

... haplotypes, whose occurrence in the different areas may be ascribed either to the presence of the same haplotype in the two different refugia, or to the migration that took place through the Adriatic bridge ... because they had completely different haplotypes. These results strongly support the hypothesis of glacial refugia existing in southern Italy, and underli...

Ngày tải lên : 08/08/2014, 00:21

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Báo cáo lâm nghiệp: "Influence of pulverized limestone and amphibolite mixture on the growth performance of Alnus incana (L.) Moench plantation on an acidified mountain site" potx

... matter of assimilatory (leaf) tissues. A composite sample of leaves from each variant was taken in the period from mid-August to the beginning of Sep- tember, when the aboveground parts of the trees ... Nonetheless, if the amendment is applied at the time of planting, the fertilizing stimulus is able to increase the survival rate (K et al. 2008). As for...

Ngày tải lên : 07/08/2014, 04:20

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Báo cáo lâm nghiệp: " Influence of a planting hole application of dolomitic limestone powder and basalt grit on the growth of Carpathian birch (Betula carpatica W. et K.) and soil chemistry in the air-polluted Jizerské hory Mts." pptx

... processed ﬁles of the mensurational characteristics consist of the data only that are related to the trees surviving in the autumn of 2004, the data belonging to the dead trees were retrospectively ... formed: the 0 to 10 cm composite and the 10–20 cm composite. is limited number of composites per variant was taken in order to avoid damage to the root...

Ngày tải lên : 07/08/2014, 10:22

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Báo cáo lâm nghiệp: " Influence of environmental conditions on radial patterns of sap flux density of a 70-year Fagus crenata trees in the Naeba Mountains, Japan" ppsx

... measured the radial variation in flow within the xylem in detail in several different tree species. Alto- gether, the peak of the Weibull function and the peak of SFD day at intervals of 20 mm ... propose different types of response with depth in the trunk are resolved. Considering that the theoretical response with depth described by the Weibull function per...

Ngày tải lên : 08/08/2014, 00:21

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Báo cáo lâm nghiệp: "Influence of marine salts on the localization and accumulation of surfactant in the needles of Pinus halepensis Mill" ppsx

... the occurrence of other pollu- tant substances, or across microfissures of the cuticle, caused by the insects, the ac- tion of phytopathogen organisms or the im- pact of ... order to determine the sorption of LABS into the different sampled fractions of the plant (epicuticular wax, dewaxed needles or branches without needles and...

Ngày tải lên : 08/08/2014, 18:21

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Báo cáo lâm nghiệp: "Influence of light conditions on the predetermination of foliar characteristics in Betula alleghaniensis Britton" ppsx

... mid- August. Chlorophyll content The chlorophyll content of early leaves was also influenced by the light conditions of year n (Fig. 1 For the 1 st harvest of early leaves, the highest ... (structure, anatomy and chlorophyll content) agree and demonstrate that the light conditions to which plants have been exposed have an influence on...

Ngày tải lên : 09/08/2014, 04:20

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