Báo cáo lâm nghiệp: "In vitro clonal propagation of Acacia mangium Willd. and its evaluation of genetic stability through RAPD marker" ppsx

... balance between gross transformations of organic N into ammonium or nitrate and immobilisation of mineral N by living microorganisms. Net nitrification results from gross oxidation of ammonium and organic ... mineralization in spruce and Douglas fir respectively, and close to net mineralization in Corsican pine, beech and oak. 3.3. Short term gross mineraliza...

Ngày tải lên: 07/08/2014, 16:20

... mycorrhization of pine seedlings 581 Table III. Effect of the inoculation with different ectomycorrhizal fungi and of the fertilisation method on growth of containerised Pinus pinea seedlings. For each fertilisation ... obtain- ing mycorrhizal seedlings of both pines. The highest ECM percentages were obtained in the fertilisation treatments, in- dependently of...

Ngày tải lên: 07/08/2014, 16:21

... Europe: a comparison between archaeological and actual oak ring series (Quercus robur and Quercus petraea) Kristof HANECA a *, Joris VAN ACKER a , Hans BEECKMAN b a Ghent University, Department ... three archaeological sites in Flanders. N: number of tree -ring series. AV. No. TR, AV. RW and AV. STDEV: the average number of tree rings, the avera...

Ngày tải lên: 08/08/2014, 00:22

... article Classifying xylophone bar materials by perceptual, signal processing and wood anatomy analysis Loïc BRANCHERIAU a *, Henri BAILLÈRES a , Pierre DÉTIENNE a , Richard KRONLAND b , Bloen METZGER b a ... twice/cm by marginal parenchyma bands in Swietenia, 15 times by bands in Hymenolobium, while in the woods with poor acoustics the tissues were disrupted 35–50 tim...

Ngày tải lên: 08/08/2014, 00:22

... (+6.1% for the modulus of elasticity and +7.09% for the bending strength). The swelling behaviour of the beech with red heart is slightly increased. The hygroscopic behaviour of the red- hearted ... determine the quantitative colour differences of normal and red- hearted wood and the behaviour of the colour differ- ence during xenon-arc exposu...

Ngày tải lên: 08/08/2014, 00:22

... 382 R.M. Nanda et al. explant of Acacia mangium. This communication describes a successful protocol on in vitro clonal propagation of Acacia mangium from nodal explants of a mature tree and determines the ... use of Randomly Amplified Polymorphic DNA (RAPD) markers. in vitro / legume tree / multiplication / micro -propagation / RAPD marker Résumé – Propagation...

Ngày tải lên: 08/08/2014, 01:21

... 2004 DOI: 10.1051/forest:2004011 Note Argan (Argania spinosa (L.) Skeels) seed germination under nursery conditions: Effect of cold storage, gibberellic acid and mother-tree genotype Mohamed ALOUANI, ... effect of GA and cold in the case of argan seed germination. From the results of this study, dormancy can be broken using GA or cold s...

Ngày tải lên: 08/08/2014, 01:22

... of spring frost sensitive tree species. Reỗu le 4 novembre 1987. Accept! le 19 novembre 1987. Electric heating units in pollination bags avoid damage to flowers by spring ... heated bags, 70 p. 100 of the artificially pollinated flowers were still living. In conclusion, electric heating of pollination bags is a quick, cheap and...

Ngày tải lên: 09/08/2014, 02:20

... in dormancy breaking of tree seeds Z. Szczotka U. Lewandowska Institute of Dendrology, Polish Academy of Sciences, Kornik, Poland Introduction Work connected with the role of ... of dormancy breaking of Acer platanoides and Fraxi- nus excelsior seeds (in the initial stage) has proceeded in two directions: 1) studies of changes in the con...

Ngày tải lên: 09/08/2014, 04:20

... 16, 191- 200 In vitro propagation of Prosopis species (P. chilensis, P. cineraria and P. juliflora) C.A. Batchelor D. Yao, M.J. Koehler P.J.C. Harris Department of Biological Sciences, ... proliferation and shoot growth of P. chilensis, P. cineraria and P. juliflora. Materials and Methods Explants with 1 or 2 nodes were taken from th...

Ngày tải lên: 09/08/2014, 04:20

... values of gc, water is wasted. Materials and Methods Lilac, potato and maize were grown in the field at Grignon, 40 km west of Paris. Measurements were made with a Parkinson leaf ... the maximum of demand function crosses the C; regulation line. We can observe that, if WUE of maize is higher than the WUE of lilac or potato, the...

Ngày tải lên: 09/08/2014, 04:20

... of the variation. The simplest of these models is the linear regression which explained 98% of the variation and does a good job of predicting leaf area from length and ... (Dickmann, 1971). ). Results All of the models tested to predict leaf area from various combinations of leaf length and width had good correla- tions and signif...

Ngày tải lên: 09/08/2014, 04:20

... after a 2 wk adaptation period as the slope of C0 2 concentration over time in the whole chamber (Gaudillere and Mousseau, 1989). During the two 1 st 2 wk, the C0 2 concentration ... where environmental conditions were controlled (22 /15°C day-night, 15 h photoperiod, 50% RH). Whole plant photo- synthesis at 25 0 jlmol-m- 2 s- 1 PPFD...

Ngày tải lên: 09/08/2014, 04:20

... Changes in pathways for carbon and nitrogen assimilation in spruce roots under mycorrhization C. Namysl 1 F. Le Tacor M. Chalot 1 B. ... carbon for amino acid biosyn- thesis. Some enzyme markers associated with the pathways of nitrogen and carbon metabolism were examined in spruce ectomycorrhizae and in each ... partner (uninfected...

Ngày tải lên: 09/08/2014, 04:20

... pour tous les lots de 1981 et pour le Importance de la teneur en eau du pollen pour la réalisation de croisements contrôlés chez le Douglas Ewa MELLEROWICZ INRA, Centre M. ... le pollen avant de l’utiliser pour les croisements, nous pouvions améliorer le rendement en graines chez le Douglas. 2. Matériel et méthode 2.1....

Ngày tải lên: 09/08/2014, 06:21