搜索结果: 1-15 共查到“农学 variability”相关记录119条 . 查询时间(0.14 秒)
Monitoring intra-annual and interannual variability in spatial distribution of plastic-mulched citrus in cloudy and rainy areas using multisource remote sensing data（图）
Monitoring intra-annual interannual variability spatial distribution plastic-mulched citrus
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2024/4/1
The technology of canopy plastic mulching has been widely used in citrus orchards for protecting fruit trees from cold damage. Understanding the spatio-temporal dynamics of plastic-mulched citrus (PMC...
Foliar water uptake in arid ecosystems: seasonal variability and ecophysiological consequences
Rooting depth Cell wall elasticity Leaf water potential Transpiration Rain pulse Dew formation
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2024/1/12
Foliar water uptake (FWU) has been reported for different species across several ecosystems types. However, little attention has been given to arid ecosystems, where FWU during dew formation or small ...
Variability in growth and cadmium accumulation capacity among willow hybrids and their parents: implications for yield-based selection of Cd-efficient cultivars（图）
柳树 杂交子代 镉 积累能力
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2023/6/2
上个世纪90年代，北美灌木柳育种计划在纽约州启动，经过30多年的杂交、选育以及在美国中、北部的区域试验，选育了一大批高产、高抗的灌木柳栽培品种，目前很多品种在美国已商品化生产。在北美纽约州、宾夕法尼亚州等地，灌木柳被广泛用于工业污染地、垃圾填埋场的植物修复、公路防风雪篱以及生物质能源生产。尽管国际上在柳树重金属污染修复方面做了大量研究，筛选出很多对重金属具有高积累、耐性以及转移的品种，但是重金属积...
Effects of 20-day litter weight on weaned piglets’ fighting behavior after group mixing and on heart rate variability in an isolation test
Fighting Behavior Isolation Test Skin Lesion Score Heart Rate Variability Autonomic Nervous System
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2017/3/9
The objective of this study was to investigate the effect of 20-day litter weight on behavior and heart rate variability (HRV) of piglets under stress.
Variability in leaf and crown morphology correlated with light availability in five natural populations of Quercus castaneifolia C.A. Mey
plasticity Hyrcanian forest controlled conditions leaf mass leaf area leaf area ratio
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2018/3/6
In this study, we investigate seedlings of Quercus castaneifolia C.A. Mey, from five different provenances for the research
on leaf and crown morphological variations in relation to a light gradient ...
Morphological variability between diploid and tetraploid taxa of the genus Betula L. in the Czech Republic
silver birch downy birch ploidy flow cytometry classification function
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2018/3/6
The aim of this work was to suggest a reliable method for distinguishing between diploid and tetraploid taxa of the
genus Betula Linnaeus, based on leaf measurements. In total, 97 individuals from 6 ...
Detection of the effects of management and physical factors on forest soil carbon stock variability in semiarid conditions using parametric and nonparametric methods
soil organic carbon CART modelling, neural networks
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2015/11/26
Forest soils in western parts of Iran are being degraded by inappropriate management. The soil organic carbon (SOC) stock was dominantly affected by this type of degradation. On the other hand, SOC is...
Evaluation of Genetic Variability in Algerian Clover (Trifolium L.) Based on Morphological and Isozyme markers
clover isozymes morphology PAGE polymorphism
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2015/7/2
Genetic variation within and among fifteen Trifolium species represented by 157 accessions was assessed using
morphological and isozyme markers. Most of morphometric characters contributed to the di...
Microsatellite variability in nutria (Myocastor coypus) genetic resource in the Czech Republic
nutria genetic resource microsatellite marker
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2015/6/23
Nutria (Myocastor coypus) is a large rodent native to South America which was introduced
worldwide originally with the intention of fur farming. Three colour forms (Standard, Moravian Silver, and
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Assessing losses of genetic variability in the endangered Mallorquí horse
conservation genealogies selective decisions Mc1r gene diversity allelic richness
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2015/6/8
Information contained in the studbook of the endangered Mallorquí horse was analysed to assess the genetic variability of the breed. Also, the effect of selection for coat colour variation was assesse...
Sampling factors causing variability in milk constituents in early lactation cows
milk composition somatic cell count
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2015/5/25
This study was conducted to evaluate effects of breed, parity, sampling day, and sampling time on
somatic cell count (SCC) and milk lipid and protein profiles in intra-mammary infection-free early l...
Assessment of genetic variability in autochthonous elm populations using ISSR markers
Ulmus minor U. glabra U. laevis genetic diversity and differentiation
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2015/5/5
Genetic diversity between 110 individuals from 6 elm populations (Ulmus minor, U. glabra and U. laevis)
was determined using ISSR markers. Altogether 73 ISSR markers were evaluated with the average ...
Sampling factors causing variability in milk constituents in early lactation cows
milk composition somatic cell count breed parity sampling day sampling hour
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2015/4/30
This study was conducted to evaluate effects of breed, parity, sampling day, and sampling time on somatic cell count (SCC) and milk lipid and protein profiles in intra-mammary infection-free early lac...
Growth of Norway spruce (Picea abies [L.] Karsten) from artificial and natural regeneration in the Krkonoše Mts. and air temperature variability
climate regression models 8th forest altitudal zone reforestation
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2015/4/24
Our research was concerned with a description of the influence of variability in average temperatures on the height growth of selected young populations of spruce in the Krkonoše Mts. Several pop...
Progressive rod-cone degeneration (PRCD) in selected dog breeds and variability in its phenotypic expression
canine retinitis pigmentosa autosomal recessive causative mutation
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2015/4/15
Progressive rod-cone degeneration (PRCD) is a late onset autosomal photoreceptor degeneration found in canines. PRCD in canines is homologous to one form of retinitis pigmentosa (RP) found in humans a...