Báo cáo lâm nghiệp: "Influence of exogenous L-proline on embryogenic cultures of larch (Larix leptoeuropaea Dengler), sitka spruce (Picea sitchensis (Bong ) Carr ) and oak (Quercus robur L ) subjected to cold and salt stress" pdf

Báo cáo lâm nghiệp: "Influence of exogenous L-proline on embryogenic cultures of larch (Larix leptoeuropaea Dengler), sitka spruce (Picea sitchensis (Bong.) Carr.) and oak (Quercus robur L.) subjected to cold and salt stress" pdf

... shown). 3.4. Measurement of intracellular proline concentration in embryogenic cultures subjected to below freezing temperaturesThe concentration of proline in embryogenic cultures of larch, sitka ... seen that exogenous proline reduces K+ leakage from larch, sitka spruce and oak. Figure 2. Influence of proline on the growth rate of larch (Larix lep-toeuropaea Dengler) embryogenic cultures ... sitka spruce and oak is shown in Table I. With no prolineaddition, intracellular proline levels are correspondingly low.When proline is added, intracellular proline levels recordedcorrespond...

Báo cáo lâm nghiệp: "Carbon stock changes in a peaty gley soil profile after afforestation with Sitka spruce (Picea sitchensis)" potx

... dans le profil des sols tourbeux à gley après boisement avec l épicéa de Sitka (Picea sitchensis (Bong. ) Carr) . Les variations de stocks de carbone (Corg ) dans la litière (O L ), dans l horizon ... chronosequence of Sitka spruce (Picea sitchensis) on peaty gley soil, inHarwood Forest (N.E. England). The sites chosen were: unplanted natural grassland, 40-yr-old first rotation, 18 months-old clearfelled, ... progressivelyaccumulated in O L and OH. It is estimated that by the age of clearfelling of second rotation stands soil Corg stocks will haveequalled those of the former unplanted grassland [31]. Acknowledgements:...

Báo cáo lâm nghiệp: " Zygotic embryogenesis and empty seed formation in European larch (Larix decidua Mill.)" pptx

... of pollination and clone.Pollination Clone Proportion of ovules with the complete degeneration of embryos Unfertilized From fertilized ovules ( %) From total number of ovules ( %) ovules ( %) OpenSelfTotalM5M10Š13Š14TotalM5M10Š13Š14Total ... its connection with the intracellular con-tent of fertilized archegonium (Fig. 1c).Formation and development of the non-differentiated mul-ticellular (globular or ellipsoidal) embryonal mass ... June 8. (b) Elongation of embryonalsuspensor and displacement of the embryonal group out of fertilized archegonium. June 8. (c) Formation of multicellular embryonal mass insidethe corrosion cavity....

Báo cáo lâm nghiệp: " Influence of temperatures and precipitation on radial increment of Orlické hory Mts. spruce stands at altitudes over 800 m a.s.l" ppt

... residual tree-ring chronology was created in the ARSTAN application. e chronol-ogy has low values of autocorrelation. e standard regional tree-ring chronology was also established. e range of ... standsTable 2. Synchronization of average tree-ring curves of individual standsCompared curves T-test Synchronization of curves ( %) (according to Baillie & Pilcher) (according to Hollstein)Stand ... possible to use the method of the dendrochronological analysis for modelling the climatic environment inﬂuence with success. e cornerstone of dendrochronological applications is the knowledge...

Báo cáo lâm nghiệp: " Influence of stand density, thinning and elevated CO2 on stem wood density of spruce" pot

... All data were tested on normality and homoge-Table 1. Position of stem discs in stem vertical proﬁle grown in elevated (E) and ambient (A) concentration of CO2 and sparse (s) and dense (d) ... sections t8 and below.Methodology for stem volume calculation was based on the length of internodial section and its middle cross-sectional circle area measurement. SWD of tree was calculated as ... vari-ants of glass domes with adjustable windows (DAW) – ambient (A, 350 µmol(CO2 )/ mol) and elevated (E, A + 350 µmol(CO2 )/ mol) – established a for simulation of elevated atmospheric CO2 concen-tration...

Báo cáo lâm nghiệp: "Influence of pulverized limestone and amphibolite mixture on the growth performance of Alnus incana (L.) Moench plantation on an acidified mountain site" potx

... essential in order to prevent introskeletal soil erosion (Š 1990; V et al. 200 3). On the one hand, the requirement to convert the allochthonous blue spruce stands as well as the need to ... production and nutrient accumulation in short-rotation grey alder (Alnus incana (L .) Moench) plantation on abandoned land. Forest Ecology and Management, 161: 169–179.URI V., TULLUS H., L HMUS ... the conversion of blue spruce stands even under environmentally highly stressing conditions, ( 2) to assess the foliar nutrient status of the alder as a precondition of positive inﬂuence on forest...

Báo cáo lâm nghiệp: " Influence of a planting hole application of dolomitic limestone powder and basalt grit on the growth of Carpathian birch (Betula carpatica W. et K.) and soil chemistry in the air-polluted Jizerské hory Mts." pptx

... diﬀerentTable 5. N, P and K concentrations (% of dry matter) in birch leavesYear/variantN ( %) P ( %) K ( %) control limestone basalt control limestone basalt control limestone basalt1993 1.58 1.84 ... (% of dry matter) in birch leavesYear/variantCa ( %) Mg ( %) S ( %) control limestone basalt control limestone basalt control limestone basalt1993 0.50 0.76 0.35 0.284 0.218 0.342 – – –1994 ... By contrast to the limestone applied, the basalt grit markedly raised exchangeable K and P contents. On the other hand, it elevated exchangeable Al and substantially reduced the content of...

Báo cáo lâm nghiệp: "Influence of light and competition on crown and shoot morphological parameters of Norway spruce and silver fir saplings" doc

... foliar-level physiological traits [13], and possibly in allocation pat-terns, but not to morphological ones. 4. CONCLUSIONSResults of the present study confirm the importance of light on growth ... interception and eco-nomic space filling – a matter of whole plant allocation, in: CaldwellM.M., Pearcy R.W. (Eds .), Exploitation of environmental heteroge-neity by plants: ecophysiological processes ... theeffects of light and competition on growth and on morpholog-ical parameters of Norway spruce (Picea abies Karst .) and sil-ver fir (Abies alba Miller) natural regenerated saplings; (ii) testthe...

Báo cáo lâm nghiệp: " Influence of environmental conditions on radial patterns of sap flux density of a 70-year Fagus crenata trees in the Naeba Mountains, Japan" ppsx

... Hallgren J E.,Radial velocity profiles of water flow in stems of spruce and oak and response of spruce tree to severing, Tree Physiol. 10 (199 2) 367–380.[3] Ford C.R., McGuire M.A., Mitchell ... interior of the cambium layer and wasshown to decrease exponentially along the radial axis of thexylem. We assumed a regular transition in the sap flux densityalong the radial axis in the xylem ... depth on typical environmental condition. SFDday ratio ( %) (SFDday at 0–20 mm depth =100 %). Coefficients of Weibull function with different environmental condition.Means of SFDday on typical...

Báo cáo lâm nghiệp: "Influence of flooding on growth, nitrogen availability in soil, and nitrate reduction of young oak seedlings (Quercus robur L.)" docx

... soils: ( 1) dissimilatory nitrate reduction to ammonia (DNRA or accumulators), ( 2) nitrogen dis-similating bacteria which are only able to reduce nitrate to nitrite ( accumulators) and ( 3) denitrifyiers ... observed in con-trolled seedlings (Fig. 2). 3.2. -N and -N content changesThe -N pool was measured in top (5 cm) and bottom(5 cm) soil layer of the pots (Fig. 3). -N concentration wasalways lower ... for one month until the transfer of the germinated seedlings.This allowed reduced conditions to be established in the soil beforeseedling establishment (day 0). All pots were randomly placed on...

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