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Báo cáo lâm nghiệp: "Nodulation in vitro et étapes précoces de l’infection rhizobienne chez Acacia albida (syn Faidherbia albida)" ppt

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Báo cáo lâm nghiệp: "Changes in the mycorrhizal status of some mountain spruce forests" potx

... 82–88 in Růžová hora the average decrease was 0.70 g, in Sněžka 0.81 g (Fig. 5).Changes in the parameters within the years 2004–2006Data on mycorrhizal status of roots obtained from spring ... approximately in the same distance (about 1 m) from the stem of five selected trees. e cylinder of the soil probe used for this purpose had the inner diameter of 6 cm and the height (depth of space ... indicate the stabilized mycorrhizal state. Positive changes in the total increase of macromycetes diversity as well as the apparent increase of percentage of macromyce-tes can be seen in the studied...
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Báo cáo lâm nghiệp: "Variability in density of spruce (Picea abies [L.] Karst.) wood with the presence of reaction wood" potx

... remarkable increase in wood density along the stem radius in all the models. In the CW zone, the increase is more distinct in the first 40 years of growth, then the wood density stagnates. In the other ... trend when density increases with the increasing percentage of compression wood in the sample. When there is 10% of compression wood in the total area of the sample front, the wood density is ... expand the know- ledge of the properties of Norway spruce (Picea abies [L.] Karst.) wood with the presence of reac-tion wood. J. FOR. SCI., 53, 2007 (3): 129–137 133e in uence of the radius...
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Báo cáo lâm nghiệp: "Changes in Austrian pine forest floor properties in relation with altitude in mountainous areas" pdf

... 228/29042004.Changes in Austrian pine forest floor properties in relation with altitude in mountainous areasO. S, H. B. TDepartment of Soil Science and Ecology, Faculty of Forestry, Istanbul ... the initial mass was still remaining after 2 years for pine. Besides V and C (2001) recorded that in boreal forests where cold climatic conditions prevail spruce forests have indigestible ... 2007)02,0004,0006,0008,00010,00012,00014,0001400-1500m1500-1600m1600-1700m>1700m1400-1500m1500-1600m1600-1700m>1700m1400-1500m1500-1600m1600-1700m>1700m Altitude Forest Floor Weight (gr/m2)H L+F TFig. 1. Forest floor weight al-terations in connection with the altitude Forest oor weight (g/m2)1,400–1,500...
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Báo cáo lâm nghiệp: "Changes in air quality in different phases of forest management process in a sub-mountain beech ecosystem (West Carpathian Mts.)" pdf

... 2/0045/08, and by the Slovak Research and Development Agency, Contract No. APVV-0102-06.Changes in air quality in different phases of forest management process in a sub-mountain beech ecosystem (West ... ecosystem (West Carpathian Mts.)D. KInstitute of Forest Ecology, Slovak Academy of Sciences, Zvolen, SlovakiaABSTRACT: We studied air quality in a sub-mountain beech ecosystem in the Kremnické ... intervention was evident on all plots – indicating the absence of connection with the individual phases of forest management process, but at the same time indicating the presence of climate change. In...
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Báo cáo lâm nghiệp: "Changes in phenolic acids and stilbenes induced in embryogenic cell cultures of Norway spruce by two fractions of Sirococcus strobilinus mycelia" pot

... concentrations during defence response in Nor-way spruce embryogenic cell suspension cultures induced by intracellular protein and wall prepara-tions from Sirococcus strobilinus mycelia. MATERIAL AND METHODSPlant ... embryo-genic cultures of Norway spruce (C) and in the cells elicited by mycelium protein fraction (PF) and mycelium wall frac-tion (WF) in the course of 24 h. Means ± Standard Error of two independent ... (ASTR) and piceid (PIC), determined in Norway spruce cell cultures treated with 5% and 20% A. abietina culture filtrate and from the control cells (C). Means of two independent experiments with two...
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Báo cáo lâm nghiệp: "Changes in the abundance of Melolontha hippocastani" ppsx

... males. In the years of heavy swarming (2005 and 2008) we saw a difference between males and females in the time of swarming; the swarming of females cul-minated at the time when the swarming of ... fluctua-tions in the intensity of swarming were due to low evening and night temperatures (rain). During the entire period of swarming the males outnumbered the females (Fig. 3). In the subsequent ... Statistica 8. In all the four localities we evaluated data on the intensity of cockchafer swarming and interpret-ed the trend of development of the abundance of cockchafer tribes in the particular...
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Báo cáo lâm nghiệp: "Nutrients in the aboveground biomass of substitute tree species stand with respect to thinning – blue spruce (Picea pungens Engelm.)" doc

... content in the biomass on the thinned plot represented 8 9–9 2% of the values calculated for the control plot without thinning. On the basis of presented research, which was done within the blue spruce ... years, the investigated substitute blue spruce stand accumulated: N – 336 kg, P – 28 kg, K – 138 kg, Ca – 159 kg, Mg – 28 kg per hectare. Thinning with the consequent removal of aboveground biomass ... 6%.At the age of 22 years, the investigated substitute blue spruce stand without thinning accumulated: N – 336 kg, P – 28 kg, K – 138 kg, Ca – 159 kg, Mg Table 1. Development of aboveground biomass...
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Báo cáo lâm nghiệp: "Differences in fine root traits between Norway spruce (Picea abies [L.] Karst.) and European beech (Fagus sylvatica L.) " potx

... problem, for instance comparing Norway spruce (Picea abies [L.] Karst.) and European beech (Fagus sylvatica L.; S 2002), Norway spruce, Scots pine (Pinus sylvestris L.) and European beech (F ... E., 2007. Variation in fine root biomass of three European tree species: beech (Fagus sylvatica L.), Norway spruce (Picea abies L. Karst.), and Scots pine (Pinus sylvestris L.). Plant Biosystems, ... situations and, consequently, also differences in the resistance of particular tree species to changing Differences in fine root traits between Norway spruce (Picea abies [L.] Karst.) and European beech...
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Báo cáo lâm nghiệp: "Variables influencing cork thickness in spanish cork oak forests: A modelling approach" docx

... plotbasal area under cork; gmax: maximum basal area under cork; gdom: domi-nant basal area under cork; apb: area proportional to tree basal area; BAL:mean basal area of the trees larger than ith ... variance associated with increasingclasses of canopy cover, basal area and mean squared diam-eter and decreasing classes of stand density. This indicatesthat within plot tree variability in cork thickness ... the other hand, Vieira [45] Variables in uencing cork thickness 303Table I. Characterisation of the fitting and calibration data set.Variable Mean Min Max STD CV (%)Fitting data 1st harvest cb...
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Báo cáo lâm nghiệp: "Variation in wood volatile compounds in a mixed oak stand: strong species and spatial differentiation in whisky-lactone content" pptx

... threeecological zones: a small valley, a plateau and a regular intermediateslope. The plateau is covered by a well drained soil and composedof sand and slit. The small valley is characterized ... compounds in a mixed oak stand: strong species and spatial differentiation in whisky-lactone contentAndrei P a ,AlexisDb,RémyJ.Pb, Gérard Nc, Jean-Louis P a * a Unité ... extractive compounds of cooperage oak wood play an essential role in wine and spirits maturation in oak casks. They generally have low aroma thresholds so thattheir sensorial detection takes place...
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Báo cáo lâm nghiệp: "Nodulation in vitro et étapes précoces de l’infection rhizobienne chez Acacia albida (syn Faidherbia albida)" ppt

... Oxford. Article originalNodulation in vitro et étapes précoces de l’infection rhizobienne chez Acacia albida (Del) (syn Faidherbia albida) YK Gassama/DiaDépartement de biologie végétale, ... l’étude des stades précoces de l’infection rhizobienne, des prélèvements de racines infectées ont été effectués 10 puis 15 japrès l’inoculation, sur de jeunes plants d Acacia albida ... de 2 semaines environ) et des nodulesmatures (4 semaines et au-delà).RÉSULTATSEffet de la date de l’inoculationCinétique de la nodulationEn suivant la cinétique de...
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Báo cáo lâm nghiệp: "La pourriture du en cœur de l’Epicéa, Picea abies (L.) Karst. Auvergne. Etude écologique." ppsx

... importants en exposition Sud (B 1 2 2) avec une notation moyenne de 84. La pourriture du cœur de l’Epicéa, Picea abies (L.) Karst. en Auvergne. Etude écologiqueE. BENIZRYLaboraG. ... unteindischen Eintrittspforten der wichtigsten Rotfân-kerreger hei der Fichte (Picea abies) . Forstwiss. Cbl. 88, 281-308.EVERS F.H., 1973. Zusammenhang zwischen chemischen Bodeneigenschaften ... 525-566.HOLMSGAARD E., HOLSTENRR-JORGENSEN H. & Y DE- ANDERSEN A., 1961. Bodenbildung, Zuwachsund Gesundheitszustand vor Fichtenbestânden erster und zweiter Génération...
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Báo cáo lâm nghiệp: "Polyamines and ethylene during of Prunus avium L. in vitro rooting" pps

... dataconcerning ethylene biosynthesis indicatethat, upon transfer to a rooting mediumcontaining 5 !M IBA, ethylene productionwas of the order of 2.2 pmol/shoot/h.Finally, ... rooting process, probably in the stages of activecell division. In fact, increases in intracel-lular PUT and SPD levels preceded rootprotrusion and may have coincided ... thin-layer chromatography and fluoro-metrically determined. The incorporation of labeled PUT, the precursor of SPD and SPM,was evaluated by adding 185 kBq to 100 ml of medium...
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Báo cáo lâm nghiệp: "Comportement in vitro d’embryons zygotiques de chêne liège (Quercus suber L.) excisés à divers stades de leur développement" pps

... Comportement in vitro d’embryons zygotiques de chêne liège (Quercus suber L.) excisés à divers stades de leur développementM. El MaâtaouiH. EspagnacLaboratoire de Biologie ... culture d’embryons zygotiques de chêne liège, excisés plus ou moinsprécocement. Nous avons en effet, dansun précédent travail (El Maâtaoui et Espa-gnac, 1987), réussi à induire ... chez le chêne liège. Par contre, au fur et à mesure que l’ons’adresse à des stades plus avancés où ladifférenciation cellulaire (accumulation de réserves) commence à l’emporter...
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Báo cáo lâm nghiêp: "Culture in vitro d’embryons isolés de noyer commun (Juglans regia L.)" ppsx

... myo-inositol (100 mg/]) et de 0,1 mgll d’acide nicotinique, de pyridoxine, de thiamine, de pantothenate de Calcium, de L-Cystéine. Les milieuxsont solidifiés à l’aide du ... se demander si les racines, sièges de la synthèse de cytokinines, sont réellement fonctionnelles lorsqu’elles sont formées in vitro. Seule une éude plus fine de caractère ... culture d’embryons isolés. In : Connais-sance de la biologie des arbres par les carltures in vitro. 2&dquo; rộunion de la SectionFranỗaise de llAPTC sur l’arbre in vitro. ...
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