Báo cáo lâm nghiệp: " Impact of drought and leaf development stage on enzymatic antioxidant system of two Populus deltoides × nigra clones" potx

... leaves of both clones. For the two clones, use of inhibitors allowed identification of one Fe-SOD, one Mn-SOD and two Cu/Zn-SOD (Fig. 2A). In control condi- tions, main isoforms were Fe-SOD and ... limited participation of this class of molecules during drought [10]. The objective of the present investigation was to focus on the res- ponse of some of the leaf en...

Ngày tải lên: 08/08/2014, 00:22

... mid- and long-term proc- esses, especially as far as the behaviour of pioneers popula- tions are concerned. The 4-year post logging observation period of this study corresponded to an expanding stage ... Research in a Lowland Mixed Dipterocarp Forest of East Kalimantan - The Contribution of STREK Project. CIRAD-Forêt, Montpellier, France and Minis- try of Forestry Research an...

Ngày tải lên: 08/08/2014, 01:21

... competition from herba- ceous vegetation for seedlings of jack pine, black spruce, and white pine, New For. 21 (2001) 199–215. [20] Philipson J.J., Coutts M.P., Effects of growth hormone application on ... 6,27]. Removal of the whorl and lateral buds and whorl branches had a more severe effect on plant growth and caused a reduction in root length and DW. Removal of a signi...

Ngày tải lên: 07/08/2014, 16:20

... of N and P, and lower return of Ca than coniferous ones. While the amount of poten- tial return of K and Mg show no clear trend between broadleafs and conifers. Initial lignin concentration and ... W.G., Haag D., Lieberei R., Conversion of secondary forest into agroforestry and monoculture plantations in Amazonia: consequences for biomass, litter and soil carbon stocks...

Ngày tải lên: 08/08/2014, 01:22

... ef- fects of drought on trees on forest biodiversity should be rapidly evaluated, especially the impact of the plantation of drought- tolerant tree species and of the reduction of the rotation length ... SHORT- AND MID-TERM EFFECTS OF DROUGHT Observed and potential short- and mid-term impacts of a drought event are listed in Table III. Short-term responses m...

Ngày tải lên: 07/08/2014, 16:20

... diagnosis of the causes of tree de- cline very difficult, and a retrospective view of tree history by the way of dendrochronology is often helpful. If the impact of drought on stomatal control, carbon ... the use of numerical simulation models basing on parameters de- rived from intensive measurements of seasonal patterns of soil water content and of tree transpira...

Ngày tải lên: 07/08/2014, 16:20

... informa- tion caused by a high level of uncertainty of natural, economic and social conditions during the long for- est production cycle. If the information about goals, solution variants and their consequences, ... quantification of wood-production function. is parameter is the main component of the classic Faustman model of periodical land revenue, and it is close to the...

Ngày tải lên: 07/08/2014, 10:21

... elongation, (3) for formation of axillary buds, (4) for elon- gation of axillary long shoots, (5) for formation of secondary axillary long shoots, (6) for occurrence of dwarf shoots (either on ... 89 Figure 1. Ontogenetic scores. (0) Cotyledonary stage, (1) emergence of the epicotyl rosette, (2) epicotyl elongation, (3) formation of axillary buds, (4) elongation of axillary l...

Ngày tải lên: 07/08/2014, 16:20

... that instantaneous and long-term water use efficiency under well watered conditions did not give any indication of the relative drought tolerance of a group of southern hemisphere conifers. Valladares ... regeneration of the Araucano-patagonic Nothofagus species in relation to microclimatic conditions, Tuatara 22 (1973) 233–244. [29] Yin Ch., Peng Y., Zang R., Zhu Y., Li Ch., Adapta...

Ngày tải lên: 07/08/2014, 16:21

... pro- duction. The conservation of a continuous cover and an irregu- lar structure by means of moderate wood extractions for short periods is advisable for protection of the ecosystem and for aesthetic ... each of these representative areas of each stand structure two rectangular plots of 40 m by 60 m were chosen at random. In the plantation, only one plot was chosen given th...

Ngày tải lên: 07/08/2014, 16:21