Báo cáo lâm nghiệp: "The effects of transplanting stress on photosynthesis, stomatal conductance and leaf water potential in Cedrus atlantica Manetti seedlings: role of root regeneration" pdf

... capacity. The effects of transplanting stress on photosynthesis, stomatal conductance and leaf water potential in Cedrus atlantica Manetti seedlings: role of root regeneration J.M. ... were main- tained at 20°C in order to promote root regen- eration. Assimilation rate measurements and root observations (number of growing root...

Ngày tải lên: 09/08/2014, 04:20

... group consisting of beech and willow. e results of ANOVA in Table 3 indicate a signifi - cant in uence of different cutting operations on the number of all regenerating individuals, of all indi- viduals ... positive on plot M only. Fig. 5 illustrates the in uence of cutting on changes in the species composition of natural regeneration in comparison with the pa...

Ngày tải lên: 07/08/2014, 10:22

... DISCUSSION Confirmation of flooding and P. alni infection effects on black alder e analysis of covariance confirmed that the both factors (flooding and P. alni infection) and their combination significantly ... (2006) found that flooding during the growing season causes the highest risk of infection. e anaerobic conditions in flooded soil could in- hibit growth and lead to...

Ngày tải lên: 07/08/2014, 10:21

... crown dimensions, vertical and horizontal differentiation and foliage height diversity. Moderate and heavy thinning have similar effects on stand structure, but the effects of light thinning are quite ... 756–775. [19] Montes F., Cañellas I., Río M.d., Montero G., The effects of silvi- culture on the structure of Scots pine stands in Spain, in: Procee- dings of Towa...

Ngày tải lên: 08/08/2014, 01:22

... mechanical handling disrupt the functional continuity between soil and roots, and cause root injuries with loss of fine roots, resulting in reduced water and nutrient absorption [21]. Lifting and transplanting ... stomatal conductance and leaf water potential in Cedrus atlantica Manetti seedlings: role of root regene- ration, Ann. Sci. For. 46s (1...

Ngày tải lên: 08/08/2014, 01:22

... drying cycle. At the end of the experiment, the water- stressed seedlings of both CO 2 con- centration conditions displayed water use values amounting to 25% of the nonstressed ... INTRODUCTION Osmoregulation, ie, the lowering of osmotic potential by the net increase in intracellular organic and mineral solutes in response to water deficit...

Ngày tải lên: 08/08/2014, 18:21

... dur- ing the course of the study using a combination of herbicides and mowing. Glyphosate was sprayed on the plot before the study began, and again in the early spring of ... including directly sown acorns, 4-month-old seedlings and 1-year- old seedlings. This project also examined the effects of trimming the radicles of ger- minated...

Ngày tải lên: 08/08/2014, 18:21

... similar concentration of ozone using the same fumigation system. In this case, although there was no effect of the pollu- tant on the attainment of deep winter hard- iness, ... S0 2 + N0 2 pollution on the new season’s growth and water relations of Picea sitchensis. New Phytot. 1 O6, 225-237 Heath R.L. (1980) Initial events in injury t...

Ngày tải lên: 09/08/2014, 04:20

... aimed at the investigation of the in uence of the above-mentioned factors on cutting input. Machinery and tool Experiments were realized on a single-spindle drilling machine of FVS type; feed ... represents 2.4% difference. Measuring of cutting input At experimental measurements of cutting input the common principle of measurement was used based on monitoring changes...

Ngày tải lên: 07/08/2014, 03:22

... propor- tion of spruce. In all ordination analyses the scaling on inter-species distances using biplot scaling and logarithmic data transformation was employed. Ordination analyses were carried out in ... diagnostic species and they play a key role in characterization and differentiation of the vegetation units. In this case they provide the comparison of units withi...

Ngày tải lên: 07/08/2014, 10:21