Báo cáo lâm nghiệp: "Hybridization techniques and frost tolerance studies in intraspecific hybrids of Eucalyptus globulus Labil" pdf

... of fluid. The cross-pollinated seed lot was clear- ly the best for the variables: seed produc- tion/capsule, rate of germination and seedling survival, and the self-pollinated lot ... This trend was also found in subsequent growth in the field. Frost tolerance These results suggest that hardening had no effect on frost resistance in the cr...

Ngày tải lên: 09/08/2014, 04:20

... in frost resistance of expanding current-year needles of the Canary Island pine and subalpine evergreen timberline conifers of continental Europe suggest that frost hardening during sprouting and ... expanding (new, expanding). 2.2. Frost hardening treatment The frost hardening potential of P. canariensis seedlings dur- ing sprouting was evaluated by using a frost hard...

Ngày tải lên: 07/08/2014, 16:20

... area index (PAI, including leaf and skeleton indexes) by conventional gap fraction analy- sis of hemispherical photography and reported values of 34 and 63% of that determined destructively in ... images. Images of whole tree crowns and separately of measured branches were prepared by deleting some interfering parts of images (skeleton of branches) and adjusting cont...

Ngày tải lên: 07/08/2014, 16:21

... existence of a pre-zygotic incompat- ibility between ovules and self-pollinating pollen grains is not assumed and, most likely, the first fertilizing male gamete is derived from the first pollinating ... unfertilized ovules (especially between open pollination and self-pollina- tion) might suggest the existence of some kind of a pre-zygotic incompatibility between pollen grains an...

Ngày tải lên: 08/08/2014, 00:21

... Nakagawa Y., Rainfall and forest runoff chemistry: The 30-year change in the amount of dissolved elements in rainwater, input output budget of elements in rainfall and runoff water, and the extensive ... Throughfall and stemflow chemistry in a northern hardwood forest, J. Ecol. 61 (1973) 495– 508. [12] Edwards P.J., Studies of mineral cycling in a montane rain forest...

Ngày tải lên: 08/08/2014, 00:21

... 2. Intensive sampling scheme showing the location of the nine sample points along the two intersecting transects in a plot. Effects of fungal infection on fir growth 297 than at 60 cm above and ... (EW) of the 1984 tree ring just after the end of the latewood (LW) of the 1983 tree-ring. (D) Discontinuous growth increments and wounds formed in 1982 and 1986 (arrows). Scale...

Ngày tải lên: 08/08/2014, 00:22

... concentrations in soil water were higher in CDSC than in FVC and C in the late autumn of 1999 and lower in the spring of 1999 (Fig. 3). N concentrations were higher for CDSC than for FVC and C in late ... in FVC and C in the spring, since the warming of the soil also starts from the top, where the soil organic matter was located in these treat- ments. Precipita...

Ngày tải lên: 08/08/2014, 01:21

... 795-806 Bradford MM (1976) A rapid and sensitive method for the quantification of microgram quantities of protein utilizing the principle of protein-dye binding. Anal Biochem 72, 248-254 Ceulemans ... changes in the intercellu- lar pH and/ or in membrane properties, and more likely inhibitions of respiratory enzymes by carbamylation. After 130 d...

Ngày tải lên: 08/08/2014, 18:21

... N and carbon assimilation (Smirnoff and Stewart, 1985). In the present study, only leaf NR activity has been examined. Investigations of root activities in English woodland ... and alanine increased as leaf NR activity increased. Rhodes et aL (1976) found that glutamate and alanine pools increased in Lemna minor as nitrate concentration inc...

Ngày tải lên: 09/08/2014, 04:20

... ef- ficient, supply an increasing range of products, and maintain a high standard of sustainability. The guiding principles for achieving these goals in the Australian context are set out in documents ... improvement in the form of prove- nance selection and breeding was demonstrated by Pallett and Sale [28]. An increase in the amount of woody biomass per unit area of p...

Ngày tải lên: 07/08/2014, 16:20