为克服棉花种间杂种的不育性,利用棉花无限生长和远缘杂种分枝多的特点,山西农科院作物所张新润、牛永章和山西农业大学李炳林等对以往的染色体加倍方法进行了改进。变种子、幼苗和幼胚处理为枝条生长点处理,这样就可以在同一植株的不同枝条上进行不同的处理,避免了幼胚或幼苗处理引起杂种的死亡。他们以秋水仙碱与十二甲基亚砜的最佳组合处理12 In order to overcome the sterility of interspecific hybrids in cotton, using the characteristics of unlimited cotton growth and distant hybridization branches, Zhang Xinrun, Niu Yongzhang and Shanxi Agricultural University Li Binglin, Improve. Variants, seedlings and immature embryos are treated as shoot growth points so that they can be treated differently on different shoots of the same plant, avoiding the death of hybrids caused by immature embryos or seedling treatments. They treated 12 with the best combination of colchicine and 12 dimethylsulfoxide