Báo cáo lâm nghiệp: "The root-plant ratio changes in the first growing periods of wild cherry (Prunus avium L.) plantations" pptx

... that the fine root ratio is stable at least in the first growing period of new plantation and the best growing plants have about the same fine root ratio as the poorly growing ones. Even the regression ... explaining 92% of the relationship. An adequate proportion of fine roots (thinner than 2 mm) in the root system is another important parameter of p...

Ngày tải lên: 07/08/2014, 03:22

... stand-forming capacity of wild cherry as well as its capacity to keep its position in a stand. MATERIAL AND METHODS A large stand with wild cherry trees as a stand- forming species in the area of Demonstration ... broadleaves such as Quercus robur, Quercus petraea, Tilia sp. and Carpinus betulus (P 2007). Growth of wild cherry (Prunus avium L...

Ngày tải lên: 07/08/2014, 03:22

... possibilities of National Forest Inventory for the evaluation end, there comes the Inventory of Game Damage in the Smaller Territo- rial Units. CONCLUSION Results from National Forests Inventory ... during repeated investigation in comparison with the rest of the investigated territory. In the course of five years, in relation to the original po...

Ngày tải lên: 07/08/2014, 03:22

... Unit hydrograph is a basic method to show changes in runoff in the watershed. e investigation of runoff changes was carried out in the U Dvou louček watershed situated at the summit part of the ... runoff on the recession limb of the hydrograph. However, further investi- gations are needed. One of the suggested research questions is whether the forest stand will a...

Ngày tải lên: 07/08/2014, 10:21

... www.afs-journal.org DOI: 10.1051/forest:2007030 Original article Parental participation in progeny and effective population sizes in experimental seed orchards of wild cherry Prunus avium L. (Batsch) Stéphanie M a,b,c,g, * , ... based on the seed crop, instead of the number of flowers led to observe a diminution of the effective size of 1.8, 3...

Ngày tải lên: 07/08/2014, 16:21

... at: c  INRA, EDP Sciences, 2007 www.afs-journal.org DOI: 10.1051/forest:2007045 Original article Heartwood and sapwood variation in Eucalyptus globulus Labill. trees at the end of rotation for ... 29]. The initiation and rate of transformation of sapwood into heartwood are explained by several theories, namely that it is the amount of sapwood, e.g...

Ngày tải lên: 07/08/2014, 16:21

... (2005) 585591 â INRA, EDP Sciences, 2005 DOI: 10.1051/forest:2005051 Original article Sucrose synthase expression pattern in the rhythmically growing shoot of common oak (Quercus robur L.) Rozenn ... incorporation of cDMO as a indicator of organ sink strength in oak, that on the 2nd day, the apex is a stronger sink than the other organs [4]. We also l...

Ngày tải lên: 08/08/2014, 00:22

... length to the depth of the container and preventing the development of re- placement taproots. The confining of lateral roots in the con- tainer and their downward growth lead to the generation of ... prevent root spi- ralling, and holes in the base facilitate drainage and encourage air pruning of roots. Continual air pruning induces a limita- tion to...

Ngày tải lên: 08/08/2014, 00:22

... Ait.) using nuclear SSR markers Santiago C. González-Martínez a, b , Sophie Gerber c , Mar a- Teresa Cervera d , José-Miguel Martínez-Zapater d , Ricardo Al a a and Luis Gil b * a Unidad de ... 115 Ann. For. Sci. 60 (2003) 115121 â INRA, EDP Sciences, 2003 DOI: 10.1051/forest:2003003 Original article Selfing and sibship structure in a two-cohort stand...

Ngày tải lên: 08/08/2014, 01:21

... shoot is still insufficient. The aim of this study was to determine whether changes take place in the submicroscopic structure of the distal part of an embryonic Norway spruce shoot during winter dormancy ... (2003) 461466 â INRA, EDP Sciences, 2003 DOI: 10.1051/forest:2003039 Note Mid-winter ultrastructural changes in the vegetative embryonic shoot...

Ngày tải lên: 08/08/2014, 01:21

... characteristics, the time since last thin- ning τ and the thinning intensity I were retained for this study. Thin- ning intensity I is defined in terms of basal area, being equal to the ratio of absolute ... since thinning increased (data not shown). Thus the influences of stand age, time since last thinning and intensity of last thinning on extinction coefficient b (relat...

Ngày tải lên: 08/08/2014, 01:22

... and benzyladenine during in vitro bud growth induc- tion of wild cherry (Prunus avium L.). Plant Growth Regul. 8, 325-333 Leroux B., Maldiney R., Miginiac E., Sos- sountzov ... Internal levels of plant growth regulators during in vitro culture of wild cherry (Prunus avium L.) P. Label 1 D. Cornu B. Sotta 2 E. Miginiac 1 IN...

Ngày tải lên: 09/08/2014, 04:20

... the stem and on fine days during the growing season. On cloudy and rainy days, the depression Diurnal and seasonal fluctuations in the bark respiration of standing Quercus ... day, and the difference between the daily maximum and minimum values of respiration rates in the upper part of the stem was greater than that o...

Ngày tải lên: 09/08/2014, 04:20

... response of eucalypts to mycor- rhizal inoculation in the Congo. For. Ecol. Manag. 24, 151-157 Ultrastructural and biochemical changes at the preinfection stage of mycorrhizal formation by ... & Trappe J.M. (1984) Ectomycorrhiza formation in eucalyptus. The ultrastructure of compatible and incompatible mycorrhizal fungi and associ...

Ngày tải lên: 09/08/2014, 04:20

... Efficacité d’un paillage de papier journal sur la croissance initiale du merisier (Prunus avium L.) H. FROCHOT echnique de L. WE G. LEVY LEN *, Y LE avec la collaboration ... un paillage de papier journal. Deux ans après la mise en place, tous les traitements sont significativement supérieurs au témoin pour la hauteur et le di...

Ngày tải lên: 09/08/2014, 06:21