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研究制定出与杂交棉配套的防杂保纯技术,是推广应用杂交棉的关键。一、控制天然异交,设置安全隔离区域棉花属常异交作物,一般天然异交牢在8%左右。种子田隔离条件不安全,容易引起异交,而产生混杂退化。棉花雄性不育性,因受不育基因的控制而产生雄性不育,它要依赖于外来花粉的授粉才能传种接代。因此,在使用这类不育系生产杂交种
It is the key to popularize the application of hybrid cotton that the research and development of hybrid anti-contamination and pure technology for hybrid cotton is carried out. First, the control of natural outcrosses, the establishment of safe isolation area is often outcrossing cotton crops, the general natural heterosexuality at about 8%. Seeds isolation conditions are not safe, easy to cause out-crossing, resulting in mixed degeneration. Male sterility of cotton, male sterility due to the control of the sterile gene, depends on the pollination of foreign pollen to pass on the seed. Therefore, hybrids of this type are used to produce hybrids