选用四倍体陆地棉达棉二号与二倍体棉晋县中棉作为亲本 ,采用人工去雄杂交的方法进行种间远缘杂交 ,再经染色体加倍 ,后代进行姊妹株互交 ,单株选择和自交保纯 ,逐步提高纤维综合品质 ,稳定农艺性状和经济性状。通过 2 0多年的努力 ,于“八五”期间获得高强度优异种质 I471系等 The tetraploid cotton (Dapian 2) and diploid cotton (Jinxian) were used as parents to cross the interspecific hybrids by artificial mating between male and female. The chromosomes were doubled and the offspring were crossed with each other. Select and self-protection pure, and gradually improve the overall quality of fiber, agronomic and economic stability of traits. Through more than 20 years of hard work, I471 and other high-quality and excellent germplasms were obtained during the “Eighth Five-Year Plan”