Báo cáo lâm nghiệp: "In situ measurement of leaf water use efficiency of lilac (Syringa vulgaris): comparison with crop plants" docx

... these 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,...

Ngày tải lên: 09/08/2014, 04:20

... 0.01) 21 3.9 0.41 Samples of 120 g of soils from each stand were spread as a thin homo- geneous layer of about 2 mm on plastic trays [20]. Soils were sprayed with 10 mL of either a 0.005 M 15 NH 4 NO 3 or ... mineralization in the soil of the old coppice was related to low gross rate of mineralization rather than to the concurrent effect of microbial immobilisation of mineral...

Ngày tải lên: 07/08/2014, 16:20

... http://dx.doi.org/10.1051/forest:2007035 Controlled 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. ... species [9]. Vegetative inoculum of P. tinctorius was poorly effective, producing low number of mycorrhizal seedlings of both pines....

Ngày tải lên: 07/08/2014, 16:21

... impregnated with 160 g m –2 of phenolic resin and partly coat- ing the panel with a layer of adhesive mixture (the same type as that used for bonding the single layers, but with the addition of ferrous oxides ... for a total of 6 different combina- tions, as given below: All the panels were glued with the same adhesive mixture made up of 100 parts of MUF resin, 8 parts of...

Ngày tải lên: 08/08/2014, 01:21

... DNA (RAPD). multiplication de légumineuses ligneuses / micropropagation / marqueurs RAPD 1. INTRODUCTION Micropropagation of tree species offers a rapid means of producing clonal planting stock ... indicates the size of the marker. Lanes 1–19 show RAPD products from micropropagated plants. Table I. Bud sprout responses of nodal explants of Acacia mangium on MS medium supplemented...

Ngày tải lên: 08/08/2014, 01:21

... are very important. The system of models shows some weaknesses with very large trees (over 50 cm of dbh), because the data included very few large trees. The growth of very large trees may be overpredicted ... value of the coeffi- cients of determination, 0.18 for P. sylvestris and 0.21 for P. nigra, when the species dummies are used in the plot factor models. The low R 2 of th...

Ngày tải lên: 08/08/2014, 01:22

... the leaf xylem of the drought trees in the absence of regulation. We can thus predict that because of these tensions and because of runaway embolism, the degree of embolism ... (dF) /leaf water potential (Ψ leaf ) relationships. gL was clearly reduced with the development of the drought. The decrease of gL with Ψ preda...

Ngày tải lên: 08/08/2014, 18:21

... quick exchan- ging of samples so that even large numbers of samples can be measured within a reasonably short period of time. Upon completion of both measurements the radiation ... assessment of the above method for ecological light measurements is possible owing to the very few measure- ments, the lack of comparison with measu- rement dat...

Ngày tải lên: 08/08/2014, 18:21

... 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 poly- amines ... break- ing of dormancy, and their possible inter- action with changes in the activity of other fundamental metabolic indicators; 2) re- cognition of the inf...

Ngày tải lên: 09/08/2014, 04:20

... nodes/shoot) with 3 mg/I K, 23 mg/l NAA but 1 mg/I BA, 3 mg/I IBA gave reduced leaf abscission. Rooting of P. cineraria was obtained only with combinations of K and IBA ... I. High levels of BA induced shoot proliferation of P. chilensis with 15 mg/l BA, 5 mg/l NAA giving the highest mean of 4.3 shoots/node. Similar levels of K...

Ngày tải lên: 09/08/2014, 04:20