根据美国Texas州棉花遗传研究室的经验,为了对新发现的陆地棉突变型进行遗传鉴定,必须进行突变性状的遗传试验、对性试验和连锁试验,以便了解有关基因的遗传方式及与其他基因的联系。为了使这些试验能够获得正确可靠的结果,必须有一个性状整齐一致、基因型高度纯合化的品系作为杂交的亲本,这样的品系称为“标准系”或“标记基因系”。另外,为了鉴定不同质量性状基因对经济性状的作用,在共同的遗传背景上进行比较,才能不受其他基因的干扰而获得比较可靠的结果。具有这种相互间只有个别基因差异的一系列品系,称为“等基因系”。为了培育新的种间杂种,在陆地棉细胞型的基础上,替换一对或更多 Based on the experience of the Texas State Cotton Genetics Laboratory in the United States, genetic testing for mutant traits, sex traits and linkage tests must be conducted in order to identify newly discovered upland cotton genotypes in order to understand the genetic pattern of the gene involved and to identify with other genes Contact. In order to get correct and reliable results for these experiments, there must be a line with homozygous characters and highly homozygous genotypes as the crossed parent. Such lines are called “standard lines” or “marker lineages.” In addition, in order to identify the different quality traits of genes on the economic traits, in the common genetic background to compare, in order to be free from interference with other genes to obtain more reliable results. With this series of lines with only a few genetic differences between each other, called “isogenic lines.” In order to breed new interspecific hybrids, on the basis of upland cotton cell type, replace one or more