搜索结果: 1-15 共查到“生物学 QTL”相关记录56条 . 查询时间(0.126 秒)
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中国林业科学研究院热林所在速生桉QTL定位研究中取得进展(图)
QTL定位 材林树种 分子遗传
2023/3/19
木材资源短缺已经成为国际社会公认的发展障碍问题之一,我国森林覆盖率低于全球平均水平,可利用木材资源少。桉树(Eucalyptus)是我国重要的人工林用材树种,尾叶桉(E. urophylla)、细叶桉(E. tereticornis)及其杂交种是华南地区重要的短周期用材林树种(尤其是用于纸浆工业用材林营建),也是较好的林木分子遗传研究材料。高密度遗传图谱构建及重要经济性状(生长与材性)的QTL定位...
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2021年9月28日,Nature Communications在线发表了华中农业大学作物遗传改良国家重点实验室水稻团队、湖北洪山实验室李一博教授课题研究成果。该研究开发了一种快速、高通量克隆数量性状位点(QTL)基因的新方法——RapMap(图1),发现了单位点遗传的本质判断标准,快速克隆了8个水稻种子大小QTL基因,并揭示了籼稻细长粒形是在水稻长期驯化和改良进程中定向选择的结果。
根系是植物吸收土壤中水分和矿质营养的重要器官, 影响植物的整体生长发育。侧根是植物根系构型的重要因素。植物光合作用产物——糖在侧根原基(LRP)的起始、形成以及伸长阶段发挥了关键作用。本研究发现拟南芥(Arabidopsis thaliana)生态型Bayreuth (Bay-0)和Shahdara (Sha)在侧根发育对葡萄糖的响应中存在显著差异, 利用Bay-0×Sha重组自交系(RIL)群体...
玉米穗粗性状的全基因组关联分析及QTL元分析
玉米 穗粗 全基因组关联分析 元分析
2018/12/4
玉米(Zea mays)是全世界总产量最高的粮食作物, 穗粗是玉米单株产量的重要指标。利用FarmCPU软件对292份玉米自交系进行全基因组关联分析(GWAS), 筛选到28个显著性单核苷酸多态性(SNP)位点。借助IBM2 2008 Neighbors高密度图谱整合了2007~2015年文献发表的105个玉米穗粗性状的数量性状基因座(QTL), 采用元分析的方法, 确定了10个与穗粗相关的“一致...
Salinity Tolerance and Na Exclusion in Wheat: Variability, Genetics, Mapping Populations and QTL Analysis
genetics mapping populations Na + exclusion QTL analysis salinity tolerance variability
2014/2/25
A wide range of variability in both Naexclusion and salinity tolerance was shown in Triticum dicoccoides and the best performing genotype, from Getit, was identified for further study andfor crossing....
以我国高产籼稻特青和美国优质粳稻Lemont为亲本培育的双向回交导入系为材料,采用单核苷酸多态性标记定位源相关性状(剑叶长、剑叶宽、剑叶面积、叶干重和比叶重)和库相关性状(穗总粒数、千粒重和穗实粒重)的QTL。特青剑叶长、穗总粒数和穗实粒重显著大于Lemont,剑叶宽则显著小于Lemont。双向导入系群体检测到影响源、库相关性状的QTL 62个,平均每个QTL解释群体表型变异的9.0%,变幅为3....
Evaluation of BTA1 and BTA5 QTL Regions for Growth and Carcass Traits in American and Korean Cattle
Quantitative Trait Loci Microsatellite Markers SNPs Carcass Traits
2016/5/10
Previously identified QTL regions on BTA1 and BTA5 were investigated to validate the QTL regions and to identify candidate genes for growth and carcass traits in commercial cattle populations from the...
Identification of Candidate Genes Associated with Beef Marbling Using QTL and Pathway Analysis in Hanwoo (Korean Cattle)
Hanwoo Marbling QTL Fine Mapping
2016/5/9
Marbling from intramuscular fat is an important trait of meat quality and has an economic benefit for the beef industry. Quantitative trait loci (QTL) fine mapping was performed to identify the marbli...
株高是典型的数量性状, 易受遗传背景的干扰和环境因素的影响, 利用单片段代换系(single segment substitution lines, SSSLs)能减少遗传背景的干扰。以85个单片段代换系为材料, 其受体亲本为籼稻广陆矮4号(Oryza sativa ssp. indica), 供体亲本为粳稻日本晴(Oryza sativa ssp. japonica)。通过单因素方差分析和Dun...
Detection of QTL for Carcass Quality on Chromosome 6 by Exploiting Linkage and Linkage Disequilibrium in Hanwoo
QTL, Linkage Disequilibrium, Carcass Trait, Hanwoo, SNP
2016/5/9
The purpose of this study was to improve mapping power and resolution for the QTL influencing carcass quality in Hanwoo, which was previously detected on the bovine chromosome (BTA) 6. A sample of 427...