Báo cáo lâm nghiệp: "Genetic variability and divergence among Italian populations of common ash (Fraxinus excelsior L )" ppt

... (presence of null alleles, self-fertilization or mating between related individuals, age of analysed plants, the Wahlund effect) none of them appear plausible to fully explain such a high value of inbreeding. ... displaying a high number of alleles (from 9 to 76 alleles per locus). The total number of alleles scored in 930 individuals over all loci was 253. It was possible to detec...

Ngày tải lên: 07/08/2014, 16:20

... fiber components and morphology of loblolly pine in a large number of samples. Briefly, the techniques involved are removal of extractives, holo-cellulose preparation, α-cellulose and lignin content ... information would benefit tree improvement programs of loblolly pine and the pulp and paper industry by allowing the selection and planting of suitable trees on suitable sites...

Ngày tải lên: 07/08/2014, 16:20

... http://InBio.byu.edu/Faculty/kac/crandall_lab/geodis.htm). 3. RESULTS The morphological and genetic analysis of the eight Italian populations allowed to attribute all the individuals within a population to one of ... distinct mobility classes Figure 1. Sampling sites of Italian populations of T. destruens (ITA1-4) and locations of the populations used for the phylogeog...

Ngày tải lên: 08/08/2014, 00:22

... Japan. Overall, the understanding of biogeochemical cycling in tropical and subtropical forests is still relatively poor compared with temperate forests [6, 42]. Okinawa Island, especially in its ... height of 1.0 m with the flow passing into self-empty, tipping bucket with one empty of 500 mL, and then the solution was chan- nelled into polyethylene containers of 20 L. Stemflow...

Ngày tải lên: 08/08/2014, 00:21

... field that SOD activity References Castillo F.J., Miller P.R. & Greppin H. (1987) Waldsterben Part IV. Extracellular biochemical markers of photochemical oxidant air pollution damage ... fumigation. Plant Cell Physiol. 21, 601-611 showed a maximum in the youngest needles and then declined. In young needles of severely injured trees, the SOD acti...

Ngày tải lên: 09/08/2014, 04:20

... pour la microscopie électronique. Les coupes sont recueillies sur une lame, collées par un l ger chauffage et colorées par le bleu toluidine à pH alcalin. L utilisation ... milieu. Les vitroplants de chêne, sont prélevés stérilement dans leur tube de culture. Leur système racinaire est lavé soigneusement par l eau distillée stérilisée pour élimin...

Ngày tải lên: 09/08/2014, 06:22

... positive with KLIG and TLIG, and negative with ASLIG. Genetic correlations were observed between EXTR and both KLIG (families and localities) and TLIG (localities). KLIG, TLIG and EXTR all had significant, ... population trial at West Ridgley, Tasmania. Subrace Locality Number of families Number of individuals Flinders Island, Tasmania Central Flinders Island 4 18 King Island,...

Ngày tải lên: 07/08/2014, 16:20

... Mill., Quercus coccifera L. , Ceratonia siliqua L. , Junipe- rus phoenicea L. Phillyrea angustifolia L. , Pistacia lentis- cus L. , Cistus monspeliensis L. , C. salviifolius L. and Rubus ulmifolius ... (F IT , F ST , F IS ) calculated for all populations, populations within the same bioclimate and between bioclimates. F IT F ST F IS All populations (all polymorphic loci) 0.657...

Ngày tải lên: 07/08/2014, 16:21

... 3.4. Correlation between natural durability and colour parameters Tables IV and V show results of correlation R at intra-tree level (2 × n = 48) between mass losses and colour parameters (L* , a*, ... automatically be linked with the presence of the active molecules in biological resistance. It is necessary to study the presence and the chemical nature of the molecules more c...

Ngày tải lên: 08/08/2014, 01:21

... and silviculture of sessile oak and pedunculate oak need to take into account large genetic multiplicities and, at least partially, clear differentiation even between closely ... of the populations in question. Information on the patterns of genetic variation will lead to a better understanding of principles of adap- tation and survival of...

Ngày tải lên: 08/08/2014, 18:21