Báo cáo lâm nghiệp: "Effects of phosphate deficiency on photosynthesis and accumulation of starch and soluble sugars in 1-year-old seedlings of maritime pine (Pinus pinaster Ait)" doc

... Stomatal and mesophyll limitations of photosynthesis in phosphate deficient Original article Effects of phosphate deficiency on photosynthesis and accumulation of starch and soluble ... discussed. MATERIALS AND METHODS Plant material and growth conditions Seeds of maritime pine (P pinaster) (INRA-CE- MAGREF) were germinated on natural...

Ngày tải lên: 08/08/2014, 18:21

... in regulating the influx of carbon dioxide and the loss of water vapour. Cytosolic-free Ca2+ is thought to be involved in signal transduction linking the variations in ... drought-induced decline processes and Ca deficiency may be excluded. On the other hand, reduced stomatal conductance in light and declining CO 2 uptake lead to reducti...

Ngày tải lên: 08/08/2014, 18:21

... ČSNI 1993. (in Czech) Drainage (1973): Principles and applications. Part II – eo- ries of drainage and watershed runoff. Wageningen, Interna- tional Institute of Land Reclamation and Improvement. ... the runoff into components using the analysis of hydrograph by separation its recession limb and determining only the runoff con- stituents and their comparison also in the pr...

Ngày tải lên: 07/08/2014, 03:22

... consumption of food in the creation of a fat body in females of Lochmaea caprae (L.) Differences of imagoes in the consumption of food in particular variants cannot be confronted with findings ... proportion in feeding according to sex could not be evaluated. CONCLUSION e input of nitrogen into a plant through soil became evident by the increased content of nitrogen...

Ngày tải lên: 07/08/2014, 10:21

... spruce stand (26.0) and in the organo- mineral horizon on the beech stand area. On the contrary, the highest value was found in the beech stand (27.3) in forest floor and in the spruce stand A h ... another factor indicat- ing man-conditioned acidification of the soil profile. According to the classification of buffer zones, the spruce monoculture occurs predominantly in...

Ngày tải lên: 07/08/2014, 10:21

... 2. Effect of inoculation and the type of substrate on the con- centration of nutrients in needles of containerised P. pinea seedlings. p/v = peat/vermiculite (1:1, v:v); p/pb = peat /pine bark ... seedlings were thinned to one per container. Inoculation treatments were performed with spores of the five fun- gal species plus non-inoculated control plants. One-month-old s...

Ngày tải lên: 08/08/2014, 00:22

... compensation du sol 1. INTRODUCTION Different authors, [7, 11, 23] have underlined the importance of climatic conditions operating on the tree seedlings during the first year of planting on the land. ... the lack of water, especially during the summer months [3, 10, 19, 29]. This is the reason why the introduction of seedlings linked to the site preparation focused on concen...

Ngày tải lên: 08/08/2014, 00:22

... outbreak on both sides of the national border in relation to both natural conditions and pest management activities. 2. MATERIALS AND METHODS 2.1. Characteristics of selected site and stand conditions The ... may have been due in part to the change in protection strategy (increasing use of pheromone trap barriers instead of intensive sanitary cut- ting). (4) In the are...

Ngày tải lên: 08/08/2014, 00:22

... Chaar H., Colin F., Leborgne G., Artificial defoliation, decapitation of the terminal bud, and removal of the apical tip of the shoot in ses- sile oak seedlings and consequences on subsequent ... portion, t.2: clipping of distal buds, t.3: clipping of distal leaves, t.4: clipping of brother shoots, t.5: stem girdling (girdling position indicated with an arrow). Lower dra...

Ngày tải lên: 08/08/2014, 00:22

... have revealed a lack of understanding of ecological and physiolog- ical processes involved in oak regeneration. Light is a critical factor affecting early survival and growth of tree seedlings under a ... lower in HS as opposed to seedlings grown under FL conditions. Figure 4 depicts the relationship between ETR and the driv- ing force of electron transport to the reduct...

Ngày tải lên: 08/08/2014, 00:22