Báo cáo lâm nghiệp: "Phloem S Delrot loading and unloading" doc
Báo cáo lâm nghiệp: "Phloem S. Delrot loading and unloading" doc
... solutes (ions). Several structural, ultrastructural and physiological observations therefore sug- gest that symplastic transport in the leaf may be followed by symplastic loading ... 1989, and references therein) shows that in Beta vulgaris and Vicia faba, loading of sugars is mediated by a proton-sucrose cotransport process across the plasmalemma...
Ngày tải lên: 09/08/2014, 04:20
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
... first place caused by natural processes of tree mortality in the stand. CONCLUSIONS 1. Processes of increment and loss of fir and beech indicated a progressive process of changes in species ... stand volume. Processes of increment and mortality of fir and beech pointed to a progressive process of changes taking place in stand species composition, expressed by the increase of beech...
Ngày tải lên: 07/08/2014, 03:22
Báo cáo lâm nghiệp: "Effects of drainage treatment and stand growth on changes in runoff components from a forested watershed" pps
... growing forest stand as the forest turns to small-pole and last-growth stages. e runoff components separated using the analysis of the recession limb hydrograph of U Dvou louček watershed origin ... was expressed. e amount of surface (rapid), subsurface (accelerated) and groundwater (slow) discharge was assessed for stormflow events before and after drainage network reconstructio...
Ngày tải lên: 07/08/2014, 03:22
Báo cáo lâm nghiệp: "Evaluation of the growth and health status of selected clone mixtures in comparison with ordinary planting stock" docx
... clones acquired in repeated in situ measurements. DISCUSSION Ortet and clone plantations were established in the last years mainly for the purposes of silvicultural research, i.e. successful ... progenies of trees best surviving and growing in these specific extreme conditions should be used for the reforesta- tion of extreme localities. e results of morphological surveys in our tria...
Ngày tải lên: 07/08/2014, 03:22
Báo cáo lâm nghiệp: "Analysis of snow accumulation and snow melting in a young mountain spruce and beech stand in the Orlické hory Mts., Czech Republic" pptx
... winter seasons, snow core samples were taken in weekly intervals always from five sites (3 samples from each of the sites) in a spruce and beech stand. e depth of the samples was measured, ... plots of a size 20 m 2 in both stands. e presented study shows only a fragment of those results, namely the comparison of snow measurement studies in a young spruce and a young beech stand...
Ngày tải lên: 07/08/2014, 04:20
Báo cáo lâm nghiệp: "Diversity of endomycorrhizal fungi and their synergistic effect on the growth of Acacia catechu Willd." pot
... (Ziziphus spinosus Hu) seedlings. ey found that arbuscular mycorrhizal fungi helped withstand the water stress and also improved the growth of the seedlings. In the present study, a soil-based ... Glomus mosseae a Glomus fasciculatum, směsi VAM druhů (Glomus spp. [kromě G. mosseae, G. fasciculatum ] s Acaulospora spp., Sclerocystis spp. a Gigaspora spp.), bakterií Rhizobium sp. a hou...
Ngày tải lên: 07/08/2014, 04:20
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
... coniferous stands in terms of composition and structure. Some more sensitive target broadleaves such as European beech (Fagus sylvatica L.) and sycamore maple (Acer pseudoplatanus L.) need ... pungens Engelmann) is the most important representative. At present, when the disaster is over and the air-pollution input to the forest ecosystems is lowered, these allochthonous stands sh...
Ngày tải lên: 07/08/2014, 04:20
Báo cáo lâm nghiệp: "Effect of gibberellic acid and ethephon on the germination of European beech dormant and chilled beechnuts" pptx
... done using a peat-sand substrate (1:1 by volume) (CSN 48 1211 2006) with 400 seeds of each seedlot being mixed with a peat- sand substrate (one volume of seed to two vol- umes of substrate, ... forestry in the Czech Re- public in 2008). As such, it is necessary to ensure that sufficient beechnuts are available for nursery sowing and increased seedling production. Beechnuts, seeds of ......
Ngày tải lên: 07/08/2014, 10:21
Báo cáo lâm nghiệp: "Changes in phenolic acids and stilbenes induced in embryogenic cell cultures of Norway spruce by two fractions of Sirococcus strobilinus mycelia" pot
... re- actions in cell suspension cultures of soybean cultivars. Zeitschrift für Naturforschung C-A, 55: 718–730. K N.T. (1999): Plant disease resistance: Progress in basic understanding and practical ... 1994). us, our results show that although the com- ponents of the pathogen cell walls and intracellu- lar protein preparations of Sirococcus strobilinus mycelium differed substantiall...
Ngày tải lên: 07/08/2014, 10:21
Báo cáo lâm nghiệp: "Moisture effect on carbon and nitrogen mineralization in topsoil of Changbai Mountain, Northeast China" pptx
... coniferous forest on Andosols is situ- ated at elevations of 1,100–1,700 m, dominated by the tree species Picea jezoensis, Picea koraiensis and Abies nephrolepis; the dominant shrub spe- cies are ... treatments. e results were considered significant when P < 0.05. All data analyses and equation simulations were performed using SPSS 16.0 and Origin 8.0. RESULTS Soil C mineralizati...
Ngày tải lên: 07/08/2014, 10:21