Báo cáo lâm nghiệp: " Effects of saline stress on Eucalyptus seedlings" docx

... generally carried out at the end of the stress application. Effects of saline stress on germination The application of saline stress led to a reduced germination rate. E. alba was ... mM saline stress. The sodium concentration increased from the 1 st wk of stress application and was higher in the stem than in leaves. During the sa...

Ngày tải lên: 09/08/2014, 04:20

... position on the parent shoot of the most proximal offspring shoot, (2) diameter of the thickest offspring shoot, (3) length of the longest offspring shoot, (4) number of leaves of the largest offspring ... position of the offspring shoot numbered from the parent shoot’s distal end. Table II. Results of two-way ANOVAs (Fisher’s test, F) assessing the effects of treatments a...

Ngày tải lên: 08/08/2014, 00:22

... force of electron transport to the reduction of the redox state of the primary electron acceptor of PS II, which is approximated by 1–q P . Figure 4 also illustrates an estimate of the flux of elec- trons ... oak Quercus alba tree on the campus of Clemson University. Clemson University (lat. 34° 40’ 8”; long. 82° 50’ 40”) is located within the upper Piedmont physiographic regi...

Ngày tải lên: 08/08/2014, 00:22

... diameter through time. Orthogonal and non- orthogonal contrasts were used to test for treatment and unit effects. These contrasts tested for slope differences among the equations, which indicated whether ... selected among these matrices based upon Akaike’s Informa- tion Criterion (AIC), Schwarz’ Bayesian Criterion (BIC), and comparisons of predicted values, residual values, and replicati...

Ngày tải lên: 08/08/2014, 01:21

... environmental conditions which could explain the possible changes of vegetation. To guarantee some homo- geneity among the set of studied sites, only one main type of soil was considered: non-hydromorphic ... distribution, Cationic Exchange Capacity, free iron content, P content. The slopes of stands were not different among tree species of the same site. 3.2.2. Ellenberg indicator...

Ngày tải lên: 08/08/2014, 01:21

... [42] and competition effects on germination of therophytes described by Pausas et al. [32]. As a conclusion to this study, in spite of the intense modifi- cation of vegetation structure just ... Decrease of intra- and inter-specific competition effects must be considered for foresters in managing of early stages of succession after fire. When it’s considered both vegetation...

Ngày tải lên: 08/08/2014, 01:22

... and consequently, carbon immobilization. How- ever, little is known about the effects of phosphorus deficiency on carbon assimila- tion in forest tree species (Ericsson and ... main parameters of the biochemical model of CO 2 assimilation of Farquhar et al (1980) were calculated. The contribution of stomatal conductance and leaf nonstructural c...

Ngày tải lên: 08/08/2014, 18:21

... the direct effects of seedling density on growth in the absence of confounding effects of cell volume. Comparisons of seedling growth in different sized containers are often difficult ... Experiment Station, New Orleans, LA, 71 p. [2] Carlson L.W., Endean F., The effect of root- ing volume and container configuration on the early growth of...

Ngày tải lên: 09/08/2014, 04:20

... early growth patterns of juve- nile E. globulus have been investigated under conditions of water deficit, in conjunction with detailed measurements of gas exchange. Materials ... Effects of water deficit on leaf growth and initiation in fast-growing tree species J.C. Metcalfe W.J. Davies 1 J.S. Pereira 2 1 Institute of Environmental and ... youn...

Ngày tải lên: 09/08/2014, 04:20

... were converted into meq of K+ and expressed on a root fresh weight basis in order to limit the effect Discussion and Conclusion The examination of variations in the K+ content ... re- sponse of the two populations of pine; they illustrate the relations between the dry weight of a sample and its K+ content. An accumulation of K+ was fou...

Ngày tải lên: 09/08/2014, 04:20