近年来,外源DNA导入植物的方法,国内外均有了较大进展。1977年周光宇在总结我国广泛实践的远缘杂交基础上,首次提出DNA片段杂交假设[1][2]。并运用这一假设作为外源DNA可能导入植物的理论与技术依据,与黄骏麒、钱思颖等合作,完成了外源海岛棉DNA片段导入陆地棉、中棉等项工作[3 In recent years, foreign DNA into plants, both at home and abroad have made great progress. In 1977, Zhou Guangyu put forward the hypothesis of hybridization of DNA fragments for the first time [1] [2] on the basis of summarizing distant hybridizations widely practiced in China. And using this hypothesis as a theoretical and technical basis for the introduction of exogenous DNA into plants, we cooperated with Huang Junqi and Qian Siying to complete the introduction of exogenous island cotton DNA into Upland cotton and Central cotton [3