Báo cáo lâm nghiệp: "Tabebuia heterophylla (DC) Britton ; données nouvelles sur la reproduction sexuée et" pot

... Note technique Tabebuia heterophylla (DC) Britton ; données nouvelles sur la reproduction sexuée et végétative R. HUC, M. BARITEAU R. HUC, , Départemen M. ... sur la reproduction sexuée, sur les caractères végétatifs apparents, et sur la croissance en diamètre par rubans dendrométriques. Les Summary Tabebuia heterophylla (DC) Brit...

Ngày tải lên: 09/08/2014, 06:22

... Štiavnické vrchy Hills (GPS co-ordinates: N: 48°28.175&apos ;; E: 18°52.241'), West Carpathians, Central Europe, in their endemic populations in spruce monocultures, where the parasitism and ... významný – (a) F = 0,609, d.f. = 4, P = 0,56 0; (b) F = 1,883, d.f. = 4, P = 0,19 4; (c) F = 1,322, d.f. = 4, P = 0,30 3; (d) F = 0,373, d.f. = 4, P = 0,69 7; (e) F = 0,519, d.f...

Ngày tải lên: 07/08/2014, 03:22

... of their use. Keywords: abrasion resistance; foliated plywood; phenol foil; glass fibre; high-pressure laminate; abrasion; phenol- formaldehyde resin; Taber abraser Supported by the Ministry of ... (High-pressure Decorative HPL Laminates. Boards based on reaction-plastics. Part 1. Introduction and general information) and ČSN EN 438-2 standard (High-pressure Decorative HPL Laminates. ......

Ngày tải lên: 07/08/2014, 10:21

... spruce; somatic embryogenesis; putrescine; spermidine; spermine Abbreviations: abscisic acid – ABA; 6-benzylaminopurine – BAP; cytokinins – CKs; 2,4 dichlorophenoxyacetic acid – 2,4-D; indolylbutyric ... plants by means of so- matic embryogenesis in the Norway spruce (Picea abies [L.] Karst.) was described by many authors (B 198 5; H et al. 198 5; A, F 199 3;...

Ngày tải lên: 07/08/2014, 10:21

... Institute, Research Report, Vol. 5, Springer-Verlag, Berlin, Heidelberg, 1996. [45] Verhulst P.F., Recherches mathématiques sur la loi d’accroissement de la population, Nouv. mém. Académie Royale des ... state may be ei- ther [23]: 1. Fixed initial values; 2. The first measurement at each plot; 3. The previous measurement of each state-variable ; 4. Estimated initial values, (i) comm...

Ngày tải lên: 07/08/2014, 16:21

... et classe de largeur des cernes (tableau II). Au sein de chaque classe de largeur des cernes, la réalisation d’une analyse de la variance à un facteur (tonnelle- rie), en considérant la largeur ... propriétés étudiées, par tonnellerie, par classe de largeur des cernes (LC) et par traitement. Classe de largeur des cernes LC < 2 mm 2 mm < LC < 3 mm LC > 3 mm Traitement Traité...

Ngày tải lên: 08/08/2014, 01:21

... comparison of beech and pedunculate oak from the Belgian Ardennes, Ann. For. Sci. 58 (2001) 253–260. [18] Peñuelas J., Estiarte M., Trends in plant carbon concentration and plant demand for N throughout ... during labelling sup- ports the hypothesis of a large incorporation of N in structural components during the year when N was taken up by the trees. In contrast, in the rings formed prior t...

Ngày tải lên: 08/08/2014, 01:21

... These similarities lead to assume that specific physical and/or chem- ical barrier, as well as biotic barrier &mdash; seed predation by nutcracker &mdash; may limit ... Yates, 197 4; Roques, 197 7; Mattson, 197 8; Rauf et al, 1985). However, stone pines differ because of the additional harvest of the surviving second- year cones by t...

Ngày tải lên: 08/08/2014, 18:21

... Bosshard, 198 6; Keizer, 1993): class 0: < 20% defoliation; class 1: 20-45% defoliation; class 2: 45-70% defoliation; class 3: > 70% defoliation. Decline classes were ... quan- tity of mycorrhizae (Liss et al, 198 4; Meyer, 198 4; Fellner, 198 8; Wargo et al, 198 8; Termorshuizen, 199 0; Jansen, 199 1; Keizer, 1993). However,...

Ngày tải lên: 08/08/2014, 18:21

... à la fixation de soufre sulfate (qui, en retour, n’est pas sans effet sur la pédogénèse) (C HAO et al., 1965 ; H AWARD & R EISENAUFR , 1966 ; G EBHARDT & C OLEMAN , ... intervient de façon importante à la fois dans la nutrition - l’équilibre N/S règle la protéosynthèse (K ELLY & L AMBERT , 1972 ; C LEMENT & GES...

Ngày tải lên: 09/08/2014, 02:20