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为了通过远缘杂交培育棉花雄性不育系,我们将棉花二倍体种(中棉、草棉及中草棉杂种)与四倍体种(陆地棉)杂交,进行远缘杂交前,先用秋水仙碱处理棉花二倍体种,使其染色体加倍。现将1973年及1974年诱变棉花多倍体工作情况汇报如下。
In order to cultivate male sterile lines of cotton through distant crosses, we crossed the diploid cotton varieties (cotton, cotton grass and cotton hybrids) with tetraploid cotton (Upland cotton) for distant hybridization Colchicine treatment of diploid cotton doubled its chromosomes. The mutagenesis of polyploid cotton in 1973 and 1974 is reported below.