Báo cáo lâm nghiệp: "Interaction famille x site dans un test tristationnel de descendances de Douglas (Pseudotsuga menziesii (Mirb ) Franco" ppt

... Interaction famille x site dans un test tristationnel de descendances de Douglas (Pseudotsuga menziesii (Mirb. ) Franco) C E. DUREL NRA, Station d’Amé B. ROMAN-AMAT ration des Arbres ... B (Px.IRi (x) + Py.IRi(y )) , ( 6) IRSi (x, y) = interactivité relative synthétique de la famille i pour les 2 caractères x et y, IRi (x) =...

Ngày tải lên: 09/08/2014, 06:22

... Thèse de doctorat, université Bordeaux-I Bedel J, Thibaut B (197 6) Étude expérimentale du champ des contraintes résiduelles longitudinales dans un billon de bois. Rapport Bois ... plage des diamètres et l’é- paisseur des rondelles, et précise si la série de rondelles considérée a été test e sur une ou deux faces et fait ou non l’objet...

Ngày tải lên: 08/08/2014, 18:21

... differences depending on site quality, tree density and cone type. Better site quality (CAR) exhibited the highest values as seen in high quality but low density sites (such as TAR). The lowest tree density ... surface (ha) in 1994; D: Density (trees ha −1 ± SE); A: Altitude (m); P: average annual rainfall (mm ± SE); T: annual temperature ( ◦ C ± SE); CL: ombroclimate (Thornwaite index)....

Ngày tải lên: 07/08/2014, 16:21

... year Kings site index is 32.9 m. Soil nutrient analysis is shown in Table I. 2.2. Design Each site was considered an independent experiment with both utilizing the same randomized block design. ... de Washington aux USA. On a test les options suivantes : deux catégories de plants pour leurs dimensions, fertilisation à la plantation et l’année suivante, et deux ou trois ans de contr...

Ngày tải lên: 08/08/2014, 01:21

... ground under liquid nitrogen, in the presence of PVP (0.5 g), then solubilized with 3 ml of phosphate buffer (66 mWl, pH 7), and centrifuged (10 000 x g, 4°C, 10 min). tion ... is currently under investigation. The decreased peroxidase activity in the IWF after high 03 exposure could result from either altered enzyme secretion or direct enzyme...

Ngày tải lên: 09/08/2014, 04:20

... seeds) and viability (tetrazolium test) (4 × 10 0) were determined according the ISTA Rules (200 5). Germination tests were done using a peat-sand substrate (1:1 by volume) (CSN 48 1211 200 6) ... weight basis) was determined on two replications of cut beech- nuts (10 g each) dried at 103 ± 2°C for 1 hour in a Brabender apparatus (Brabender OHG, Duisburg, Germany) (CSN 48 1211...

Ngày tải lên: 07/08/2014, 10:21

... onto permanent forest sites it can be concluded that no greater prob- lems were identified that would impede their use for forest reproduction. CONCLUSIONS e experiments testing the survival, ... al., 1977. Recherche des meilleures conditions d’enrancinement des boutures herbacées de chêne rouvre (Quercus petraea /M./ Liebl .) et hêtre (Fagus silvatica L .). Annales des Sciences F...

Ngày tải lên: 07/08/2014, 10:21

... length (cm) total average length (cm) Root-diameter class (cm) Length (cm) 3,076 1,857 78 120 68 28 486 J. FOR. SCI., 54, 2008 (1 1): 485–490 system features considerably (C 198 7). In the ... belowground biomass inventory have been comprehensively described by K et al. (196 8), K (197 2), B (197 9), and recently by S et al. (200 0). e main problem i...

Ngày tải lên: 07/08/2014, 10:22

... Unterscheidung der beiden Schwarzpappelarten Populus nigra L. und P. deltoides Marsh. sowie ihrer Arthybride P. × euramericana (Dode) Guinier mit Hilfe von Isoenzymmmustern, Holzzucht 51 (199 7) 17–23. [13] ... accessions. poplar / identification / genetic relationships / AFLP / ISSR Résumé – Identification de cultivars de peuplier chinois à l’aide de marqueurs ISSR et AFLP et étude d...

Ngày tải lên: 07/08/2014, 16:20

... des arbres dans la vallée de Suse (Piémont, Italie). Afin de reconstruire la dynamique récente de l’étage subalpin, la présente étude a mis en œuvre plusieurs techniques. Des méthodes dendrochronologiques ont ... récente des peuplements forestiers d’altitude, alors que les changements climatiques pourraient être responsables d’une augmentation de la vitesse de croissance des arbres...

Ngày tải lên: 07/08/2014, 16:20