Báo cáo lâm nghiệp: "Variations in seed and seedling respons

Báo cáo lâm nghiệp: "Variations in seed and seedling responses to water stress in three provenances of Eucalyptus camaldulensis Dehnh" pptx

... relations of seedlings of two subspecies of Eucalyptus globulus. Tree Phy- siol. 4, 129-138 Variations in seed and seedling responses to water stress in three provenances of Eucalyptus ... between provenances in the production of hairs on the collar of ger- minating seedlings (Fig. 1 which bind the III seedling firmly to the...

Ngày tải lên : 09/08/2014, 04:20

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Báo cáo lâm nghiệp: "Diﬀerential photosynthetic and survival responses to soil drought in two evergreen Nothofagus species" docx

... 20−40 cm. Watering was suspended for 80 randomly-chosen individuals of each species, whereas the re- maining 10 were kept well watered. Beginning three weeks after the suspension of watering, every ... During June 2004, 100 two -three years old seedlings of N. dombeyi and N. nitida were collected from semi-shade in second- growth stands in the Coast Ranges south of Valdivia,...

Ngày tải lên : 07/08/2014, 16:21

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Báo cáo lâm nghiệp: "Forest yield index and its applicability to the assessment of future forest yields" docx

... significant increase in radial increment of Norway spruce in Austria in the period of 1961 to 1990, during which the length of growing season increased by 11 days associated with the increase in mean ... of mixed stands was insufficient and why it was not proved to satisfaction if tree species grew better in mixed stands or in pure stands. Recent findings show that...

Ngày tải lên : 07/08/2014, 10:21

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Báo cáo lâm nghiệp: "Variations of construction cost associated to leaf area renewal in saplings of two co-occurring temperate tree species (Acer platanoides L. and Fraxinus excelsior L.) along a light gradient" doc

... period starting in May 1st and ending in August 31th. 2.3. Sampling and analysis Thirty saplings of Acer platanoides L. and 26 saplings of Fraxinus excelsior L. were sampled in the stand in a large ... forest succession and determining the fate of juvenile trees during natural regen- eration. One of the components of shade tolerance resides in the abil- ity of sa...

Ngày tải lên : 08/08/2014, 00:22

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Báo cáo lâm nghiệp: "Variations in growth and virulence of Leptographium wingfieldii Morelet, a fungus associated with the bark beetle Tomicus piniperda L" pot

... Pathogenicity of the blue- stain fungi Leptographium wingfieldii and Ophiostoma minus to Scots pine: effect of the tree pruning and inoculum density, Can. J. For. Res. 23 (1993) 1438–1443. [39] Sutherland ... naturally in isolates belonging to the same species and originating from the same forest. This interesting result could be of great practical use for screening and co...

Ngày tải lên : 08/08/2014, 01:22

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Báo cáo lâm nghiệp: " Root system development and health condition of sycamore maple (Acer pseudoplatanus L.) in the air-polluted region of Krušné hory Mts" ppt

... rooting depth of horizontal roots and total rooting depth; length of horizontal skeleton roots; incidence of malformation. e measured values were used to calculate the index of surfaces (Index ... notes – Rooting depth was monitored also in relation to the penetration into individual soil horizons. – Roots and stems were subjected to special analy - ses to determin...

Ngày tải lên : 07/08/2014, 04:20

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Báo cáo lâm nghiệp: "Air pollution load and stand nutrition in the Forest District Jablunkov, part Nýdek" docx

... insuffi- ciency of Ca, Mg and P was recorded (Z 2003). Increased deposition of nitrogen and sul- phur in forest ecosystems in the Silesian Beskids, and deficiency of magnesium and phosphorus in ... load, mainly from the Třinec and Ostrava agglomeration. Air pol - lution signiﬁcantly decreased in the second half of the 1990s. Forest soils showing the insuﬃcie...

Ngày tải lên : 07/08/2014, 10:21

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Báo cáo lâm nghiệp: "Post-transplant root and shoot development in Abies nordmanniana Spach. seedlings after whorl bud and branch pruning" potx

... length and root tips Total root length, including length of both tap and lat- eral roots, doubled from time of transplanting in April to ﬁrst sampling in June in untreated controls and in seedlings in ... con- trol seedlings. On the day after lifting and treatment, 50 seedlings in each treatment were transplanted, along with seedlings in other treatments not refe...

Ngày tải lên : 07/08/2014, 16:20

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Báo cáo lâm nghiệp: "Diﬀerences in morphological and physiological responses to water-logging between two sympatric oak species" doc

... robur seedlings displayed significantly larger main stem high and larger root biomass than Q. petraea (Fig. 1 and Tab. II). In response to water- logging, the number of seedlings displaying total ... occurrence of a water deficit in the shoots of seedlings exposed to root hypoxia. 4.2. Inter-specific differences in the regulation of PDC In response to water- logging,...

Ngày tải lên : 07/08/2014, 16:20

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Báo cáo lâm nghiệp: "Divergence among species and populations of Mediterranean pines in biomass allocation of seedlings grown under two watering regimes" pps

... partition- ing theory, shifting allocation to roots when exposed to water stress [5, 41]. Meaningfully, during the water stress period, the P. pinea seedlings, lost water faster (data not shown), indicating ... experiment, indicating that the cultivation protocol was ineﬀective in hastening maturity in this species. Regarding stone pine (Pinus pinea), the most striking fea...

Ngày tải lên : 07/08/2014, 16:20

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