搜索结果: 1-7 共查到“作物遗传学 Upland Cotton”相关记录7条 . 查询时间(0.094 秒)
在这项研究中，我们对七个优良棉花品种的PAV模式进行了综合分析，发现大部分PAV小于20kb,小于40kb的PAV总共有1.27Gb，占到整个基因组的50.7%，大于40kb的PAV共有15430个，共有1.23Gb，占到整个基因组的49.3%。基因结构分析发现大部分缺失型PAV不在内含子区域或者外显子区域，说明这些PAV可能不对基因功能起直接作用。多倍性PAV主要定位在内含子区域，并且紧邻外显子...
Transcriptome and QTL analyses reveal candidate genes for fiber quality in Upland cotton
棉花 纤维发育 QTL 转录组 表达基因
2024/5/17
本研究基于前期得到的1个F2群体、1个重组自交系群体和2个永久回交群体得到了15个在多群体或者多年分稳定检测的QTL位点。基于转录组测序，在两亲本间发育10天的纤维进行差异基因鉴定，得到了780个差异基因。通过对QTL和转录组结果联合分析，在9个QTL区间内得到31个基因，其中有9个在纤维中优异表达的基因。在这9个基因中，有7个基因在纤维伸长期高量表达，2个基因在纤维次生壁加厚期高量表达。该研究为...
Extensive intraspecific gene order and gene structural variations in upland cotton cultivars
陆地棉 全基因组 比较分析遗传变异
2024/4/16
棉花是重要的工业原材料和天然纤维材料，相比于其他作物，陆地棉的遗传多样性极低，解析其形成原因，对棉花的遗传改良具有重要意义。研究人员通过对两种不同基因型的陆地棉进行全基因组比较分析，发现A08染色体上存在着大片段的遗传变异。该倒位能够将已发表的陆地棉核心种质资源材料分为两类，与利用SNP基因型重构的进化树的分类和主成分分析结果高度一致，表明陆地棉种内可能产生了分化。利用人工创制的群体和陆地棉核心种...
Visual Ratings and Relationships of Trichomes on Bracts, Leaves, and Stems of Upland Cotton
Trichomes on Bracts Relationships Visual Ratings
2008/5/14
Reduction of trichome density on various organs of cotton (Gossypium hirsutum L.) plants may enhance the ability to clean seedcotton and lint. Visual ratings of trichomes could facilitate characteriza...
Sources of Fiber Strength in the U.S. Upland Cotton Crop from 1980 to 2000
U.S. Upland Cotton Crop Fiber Strength
2008/5/9
The U.S. cotton (Gossypium hirsutum L.) crop had shown remarkable improvements in fiber strength until the late 1990s. At the same time, concerns about the lack of genetic diversity had been raised. T...
Upland Cotton (Gossypium hirsutum L.) x Hawaiian Cotton (G. tomentosum Nutt. Ex. Seem.) F1 Hybrid Hypoaneuploid Chromosome Substitution Series
Chromosome Substitution Series Hawaiian Cotton Upland Cotton
2008/5/6
Interspecific germplasm introgression enables unique opportunities for genetic analysis and improvement of domesticated plants, but is commonly impeded by barriers to transmission and recombination, i...
Variation in Marginal Bract Trichome Density in Upland Cotton
Marginal Bract Trichome Density Variation
2008/5/5
Elimination or reduction of trichomes around the margins of bracts should improve the cleaning efficiency of cotton (Gossypium hirsutum L.) lint. The objective of the study was to establish sampling p...