Table1_Inheritance, QTLs, and Candidate Genes of Lint Percentage in Upland Cotton.XLSX

Cotton (Gossypium spp.) is an important natural fiber plant. Lint percentage (LP) is one of the most important determinants of cotton yield and is a typical quantitative trait with high variation and heritability. Many cotton LP genetic linkages and association maps have been reported. This work summarizes the inheritance, quantitative trait loci (QTLs), and candidate genes of LP to facilitate LP genetic study and molecular breeding. More than 1439 QTLs controlling LP have been reported. Excluding replicate QTLs, 417 unique QTLs have been identified on 26 chromosomes, including 243 QTLs identified at LOD >3. More than 60 are stable, major effective QTLs that can be used in marker-assisted selection (MAS). More than 90 candidate genes for LP have been reported. These genes encode MYB, HOX, NET, and other proteins, and most are preferentially expressed during fiber initiation and elongation. A putative molecular regulatory model of LP was constructed and provides the foundation for the genetic study and molecular breeding of LP.

棉花（棉属Gossypium spp.）是一类重要的天然纤维作物。衣分（Lint percentage, LP）是决定棉花产量的核心性状之一，属于典型的高变异、高遗传力数量性状。目前已有多项关于棉花LP遗传连锁图谱与关联分析图谱的研究报道。本研究综述了LP的遗传规律、数量性状位点（quantitative trait loci, QTLs）及候选基因，以助力LP的遗传研究与分子育种工作。截至目前，已有超过1439个调控LP的QTL被报道；剔除重复位点后，在26条染色体上共鉴定得到417个非重复QTL，其中243个QTL的LOD值大于3。另有60余个稳定的主效QTL可应用于标记辅助选择（marker-assisted selection, MAS）。目前已报道超过90个LP相关候选基因，这些基因编码MYB、HOX、NET等家族蛋白，其中大多数在纤维起始与伸长阶段特异性高表达。本研究构建了LP潜在的分子调控模型，可为LP的遗传研究与分子育种奠定理论基础。