搜索结果: 1-15 共查到“林木遗传育种学 spruce”相关记录20条 . 查询时间(0.481 秒)
Modelling individual tree diameter growth for Norway spruce in the Czech Republic using a generalized algebraic difference approach
base-age invariant approach Chapman-Richards function global parameters tree-specific parameters iterative nested regression National Forest Inventory
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2017/6/26
Individual tree-based growth models precisely describe the growth of individual trees irrespective of stand complexity. These models are more useful than the stand-based growth models for effective ma...
Birch (Betula papyrifera) × white spruce (Picea glauca) interactions in mixedwood stands: implications for managementv
boreal forest competition mean annual DBH growth productivity relative density index (RDI) vegetation management
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2015/4/24
Current British Columbia forest regulations drive the regeneration management towards pure conifer stands rather than remaining in a mixed-species condition. This approach may result in unnecessary ve...
Production impacts of forest tree breeding on an example of Norway spruce
economic efficiency forest tree breeding growth Norway spruce production
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2015/3/19
The present paper evaluates the height, diameter and stem volume of parental tree progenies. These Norway spruce progenies are compared with the control estimated from tables. The control was overperf...
Polyamines during somatic embryo development in Norway spruce (Picea abies [L.])
Norway spruce somatic embryogenesis putrescine
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2015/3/16
Contents of free polyamines (putrescine, spermidine and spermine) were determined in different developmental stages of Norway spruce (Picea abies [L.] Karst.) somatic embryos by means of HPLC. Determi...
Tolerance of Norway spruce (Picea abies [L.] Karst.) embryogenic tissue to penicillin, carbapenem and aminoglycoside antibiotics
aminoglycoside antibiotics Norway spruce Agrobacterium tumefaciens
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2015/3/16
Somatic embryogenesis is conveniently utilized for the preparation of Norway spruce (Picea abies [L.] Karst.) transgenic clones by means of Agrobacterium. The establishment of successful transformatio...
Thinning experiment in the spruce and beech mixed stands on the locality naturally dominated by beech ?growth, litter-fall and humus
thinning spruce beech
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2015/3/16
In 1997, long-term thinning experiment V歟te?in Southern Bohemia was established in the young 19-year-old mixed beech and spruce stand. Three variants (0.10 ha each) were investigated: 1 ?control unthi...
Sawflies (Hymenoptera: Symphyta) in the northeast of the Czech Republic with special regard to spruce forests
Malaise trap faunistics host plants abundance
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2015/5/6
Sawflies were collected in the northeast of the Czech Republic using Townes type Malaise traps. Traps were placed in eleven young Norway spruce (Picea abies) forests during the period from 1998 to 199...
Neuroptera, Raphidioptera and Mecoptera assemblages inhabiting young spruce (Picea abies) forests: dominance structure and seasonal activity patterns
Norway spruce somatic embryogenesis Picea abies
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2015/3/6
Somatic embryogenic cultures were established from proembryonal suspensor masses (PEMs) derived from mature seeds of Norway spruce. In this study we used more than 4,300 seeds of Picea abies from rand...
Differential success of somatic embryogenesis in random gene pool of Norway spruce
Norway spruce somatic embryogenesis Picea abies
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2015/3/6
Somatic embryogenic cultures were established from proembryonal suspensor masses (PEMs) derived from mature seeds of Norway spruce. In this study we used more than 4,300 seeds of Picea abies from rand...
Initial evaluation of half-sib progenies of Norway spruce using the best linear unbiased prediction
BLUP analysis progeny test genetic gain
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2015/3/6
The present paper deals with data obtained from fifteen years old Norway spruce (Picea abies [L.] Karst.) progeny test established at three sites in the Sázava River region. Parameter under the evalua...
Influence of stand density, thinning and elevated CO2 on stem wood density of spruce
stand density stem wood density thinning
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2015/3/6
Stem wood density (SWD) of young Norway spruce trees (Picea abies [L.] Karst.) growing at ambient (A variant, 350 μmol(CO2)/mol) and elevated (E variant, A + 350 μmol(CO2)/mol) atmospheric CO2 concent...
Allometric relationships for surface area and dry mass of young Norway spruce aboveground organs
allometry biomass Picea abies
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2015/3/5
Tree-level allometric functions for a precise predicting of stem, branch and leaf mass and surface area of three needle-shoot age classes were estimated from measurements of crown and stem dimensions ...
Yellow sticky boards: a possible way of monitoring little spruce sawfly (Pristiphora abietina) (Hymenoptera: Tenthredinidae)
Pristiphora abietina ways of monitoring yellow sticky boards
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2015/3/3
Several methods of Pristiphora abietina adults catching were compared (Malaise trap, white and yellow
sticky boards, sweeping). The yellow sticky boards are handy in the field, and under the h...
Structural diversity change and regeneration processes of the Norway spruce natural forest in Babia hora NNR in relation to altitude
Norway spruce virgin forest
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2015/3/3
The research was focused on exploring the dynamics and forms of regeneration processes and structural
diversity of the Norway spruce virgin forest in Babia hora NNR in relation to altitude. In each ...
Conversion of substitute tree species stands and pure spruce stands in theOreMountains inSaxony– A Report
substitute tree species stands pure spruce stands species composition conversion Ore Mountains Mts. Germany
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2015/2/6
The original natural forest ecosystems of the OreMountains(Norway spruce, silver fir, and beech forests) have been destroyed by overcropping since the 11th century. In the 19th century spruce afforest...