搜索结果: 1-15 共查到“生物学 variation”相关记录72条 . 查询时间(0.109 秒)
南京农业大学农学院《New Phytologist》发表植物环境适应分子遗传研究课题组“A major gene for chilling tolerance variation in Indica rice codes for a kinase OsCTK1 that phosphorylates multiple substrates under cold”（图）
植物环境 分子遗传
2024/4/29
水稻起源于热带和亚热带，对低温十分敏感，当温度低于15℃时水稻便无法正常生长。有统计显示，每年低温冷害导致我国水稻减产约50亿kg。近年来，因直播稻大面积推广以及水稻种植区域不断由热带、亚热带向高海拔、高纬度地区扩张，水稻遭受低温冷害的频率有增加趋势。低温冷害已成为限制我国水稻生产的一大瓶颈。因此，挖掘调控水稻耐冷性的关键基因，研究其作用机理，对防控水稻低温冷害具有重要意义。
创新沙龙】杨琼副研究员分享“A Diversity and regional variation of endosymbiosis in Myzus persicae and Rhopalosiphum padi”（图）
创新沙龙 澳大利亚 墨尔本大学 杨琼 昆虫体内 共生菌
2024/5/23
2024年1月4日下午，第90期创新沙龙“A Diversity and regional variation of endosymbiosis in Myzus persicae and Rhopalosiphum padi”主题分享会在植保楼2060A会议室举行。本次分享会的嘉宾是澳大利亚墨尔本大学生物科学学院的杨琼副研究员，共有五十余名师生参会，现场气氛热烈。
MONITORING OF AGRICULTURAL DROUGHT USING FORTNIGHTLY VARIATION OF VEGETATION CONDITION INDEX (VCI) FOR THE STATE OF TAMIL NADU, INDIA
Agricultural drought monitoring Vegetation condition index (VCI) Drought severity map Geographic Information Systems (GIS) Normalized differenced vegetation index (NDVI)
2018/11/9
India being an agrarian nation widely depends upon rainfall for its agricultural productivity. The failure of rainfall and hence shortfall of productivity badly affects national economy. With an intri...
Study Finds Variation Within Species Is A Critical Aspect Of Biodiversity（图）
Variation Within Species Critical Aspect Biodiversity
2017/12/19
Concerns about biodiversity tend to focus on the loss of species from ecosystems, but a new study suggests that the loss of variation within species can also have important ecological consequences.Man...
Baby Fish Exercising,a Surprising Source of Adaptive Variation in Fish Jaws（图）
Baby Fish Exercising Adaptive Variation Fish Jaws
2017/9/1
An unspoken frustration for evolutionary biologists over the past 100 years, says Craig Albertson at the University of Massachusetts Amherst, is that genetics can only account for a small percentage o...
Differences in genetic and environmental variation in adult BMI by sex, age, time period, and region: an individual-based pooled analysis of 40 twin cohorts
BMI adults genetics twins international comparisons
2018/11/15
Background: Genes and the environment contribute to variation in adult body mass index [BMI (in kg/m2)], but factors modifying these variance components are poorly understood.
NEW RESEARCH LOOKS AT GENETIC VARIATION IN A HUMAN COMMENSALIST TOAD
GENETIC VARIATION HUMAN COMMENSALIST TOAD
2016/2/22
Most species are negatively affected when humans transform natural habitats into urban areas and agricultural lands, but a few species actually benefit from these activities. These species — called hu...
Colony variation in the collective regulation of foraging by harvester ants
Colony variation harvester ants
2015/12/10
This study investigates variation in collective behavior in a natural population of colonies of the harvester ant, Pogonomyrmex
barbatus. Harvester ant colonies regulate foraging activity to adjust t...
Protection Mutualisms and the Community: Geographic Variation in an Ant-Plant Symbiosis and the Consequences for Herbivores
Ant-plant mutualism Azteca context
2015/12/10
Protection mutualisms mediate trophic interactions in many systems, but their effects
on the surrounding community are rarely studied. Ant-plant symbioses are classic
examples of protection mutual...
Variation in demersal fish species richness in the oceans surrounding New Zealand:an analysis using boosted regression trees
Demersal fish Species richness Boosted regression trees Statistical model
2015/8/21
We analysed relationships between demersal fish species richness, environment and trawl characteristics using an extensive collection of trawl data from the oceans around New Zealand. Analyses were ca...
Mitochondrial D-loop sequence variation among autochthonous horse breeds in Croatia
mtDNA genetic diversity horse
2015/6/8
Genetic variation in three Croatian coldblood horse populations was analysed using a sequence analysis of the proximal part (nt 15 498?5 821) of the D-loop region of mtDNA. Twenty unrelated horses wer...
Iowa State University researchers discover surprisingly wide variation across species in genetic systems that influence aging
Iowa State University researchers surprisingly wide variation across species genetic systems influence aging
2015/6/2
A new Iowa State University study focusing on insulin signaling uncovered surprising genetic diversity across reptiles, birds and mammals.The research sets the stage for an improved understanding of m...
Iowa State University researchers discover surprisingly wide variation across species in genetic systems that influence aging
Iowa State University researchers surprisingly wide variation across species genetic systems
2015/6/18
A new Iowa State University study focusing on insulin signaling uncovered surprising genetic diversity across reptiles, birds and mammals.The research sets the stage for an improved understanding of m...
Variation in Information Needs and Quality: Implications for Public Health Surveillance and Biomedical Informatics
biomedical informatics public health surveillance
2015/3/5
Understanding variation among users’ information needs and the quality of information in an electronic system is important for informaticians to ensure data are fit-for-use in answering important ques...
Variation in nitrogen economy of two Stipa species in the semiarid region of northern China
Habitat preference Mean residence time Nitrogen-use efficiency Nitrogen productivity Plant strategies
2015/2/5
How effectively plants utilize nitrogen (N), the most limiting nutrient in natural ecosystems, will largely determine the success of plants in intra- and inter-specific competition. Theory suggests th...