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

... robur displays a larger tolerance to water-logging and associated root hypoxia [22, 23,53, 60]. This difference of tolerance to water- logging between the two oaks was used as a starting point to identify ... aiming at identifying morphological and physiological responses to root hypoxia that might differ between the two species. Potted seedlings were submitted durin...

Ngày tải lên: 07/08/2014, 16:20

... seeds in a few cases (Fig. 2). In the FI seeds chilled for nine weeks, two days priming significantly increased ger- mination from 49% (control) to 63% in alder and from 19% (control) to 29% in birch. ... chilling and its in- teraction with priming and the three-way interaction among MC, chilling and priming were more highly significant for MGT than for germination in...

Ngày tải lên: 07/08/2014, 16:21

... was obtained with counting counting flowers and taking account the coflowering time (7.5) and the highest value was obtained with counting seeds and counting flowers (10.3). The value obtained with ... obtained with the counting of seeds and the counting of flowers, and with the counting of seeds and the counting of flowers plus taking account the coflowering time (12.1). The results ob...

Ngày tải lên: 07/08/2014, 16:21

... differences in mean diameter, and only differed in the mean number of stems per stool between the stand of intense thinning and the stands of conservative thinning and old ... important factor determining forest structure. Site quality was a constraint of stand development, contributing in poor stands, to increased differences due to thin...

Ngày tải lên: 08/08/2014, 18:21

... via the phytochrome system as in P sylvestris (Toole, 1973) and P nigra (Orlandini and Malcoste, 1972). P hale- pensis and P pinaster, two common Iberian pines, have been ... 1972; Toole, 1973; Orlandini and Bulard, 1975). This clearly indicates the photophilous nature of these two pines, which allows for the germination of their seeds ma...

Ngày tải lên: 08/08/2014, 18:21

... but increased in N. dombeyi at a Ψ m between −1. 5and 2.5 MPa, and declined then drastically at a Ψ m below < −2.5MPa.AsN. dombeyi was able to maintain A at higher levels despite declining ... differences in survival de- creased when drought intensity increased and reached 0% at −3.1 MPa in both species. 3.2. Fluorescence Fv/Fm, ∆F/Fm  and qP declined gradually with increas...

Ngày tải lên: 07/08/2014, 16:21

... were planted in the soil from the decomposing stand and compared with both yellowing and green seedlings planted in the soil from the beech stand (Table 8). Phenomena of decline in two spruce ... in the studied elements between the plot with acute symptoms of spruce stand decomposition and the control plot (without apparent symptoms of dam- age to the stand) and als...

Ngày tải lên: 07/08/2014, 03:22

... chemical thinning consists in the fact that trees killed by chem- ical treatment and left in the stand to their natural Chemical thinning in blue spruce (Picea pungens Engelm.) stands and its ... blue spruce trees during the thinning and reconstruction of stands of substitute species and to specify the availability of dying trees to cambiopha- gous insects. MATERIAL...

Ngày tải lên: 07/08/2014, 03:22

... smallest among stands of the Pieniny Mountains, but in spite of the growing up stage, it was similar to increments in other Carpathian stands as well as in some sample plots in Badin, Dobročský ... m 3 /ha/year). In this stand of a transitory character between the growing up and optimum stages, due to rapid mortality of fir the break up of the stand took place, and in...

Ngày tải lên: 07/08/2014, 03:22

... catchments and growing stands in relation to runoff, assessed total runoff and its extremes in the progress of time. Unlike them we dealt with dividing the runoff into components using the analysis ... describing rainfall-runoff ratios for both growing and dormant seasons and for water years. e change in the trend that was found in growing seasons in 1996 and 2002 he...

Ngày tải lên: 07/08/2014, 03:22