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随着纺织工业的发展,人民生活需要的提高,培育早熟、高产、优质、抗逆性强、成本低的合理株群的新品种更显得迫切,因此远缘杂交的利用更引起人们的注意。棉花的种间杂交中,不等数染色体的种间杂交则很困难。对克服这种杂交不实性和杂种一代的不孕性上,许多学者和科技人员有过广泛的研究。目前我国应用较多的方式有:(1)陆地棉与中棉直接杂交,再用陆地棉连续回交。它有时成功,但因连续回
With the development of the textile industry and the improvement of people’s life needs, it is even more urgent to breed new varieties of reasonable strains with precocious, high yield, high quality, strong resistance and low cost. Therefore, the utilization of distant hybridization has drawn more attention. In interspecific hybridization of cotton, interspecific hybridization of unequal chromosomes is difficult. Many scholars and scientists have studied extensively to overcome this false hybridization and the infertility of the hybrid generation. At present, there are more ways to apply it in China: (1) Upland cotton is directly hybridized with Upland cotton, and then Upland cotton is continuously backcrossed. It sometimes succeeds, but returns continuously