我省经过8年试验研究,首创了棉花“洞A”雄性不育“一系两用”法,并选配出3个强优势的棉花杂交种,应用于大面积生产。这一重大突破,为棉花杂种优势利用技术提供了一个新途径。早在本世纪30年代,国外就先后开展了棉花雄性不育的研究。近20多年来,美国从天然变异中选育了6起核基因控制的棉花雄性不育材料,但因难于找到保持系而未能用于生产。虽又通过远缘杂交,选育出两个细胞质遗传的棉花雄性不育系,并实现 After eight years of experimental research in our province, we pioneered the cotton “Cave A” male-sterile “one-dual” method and selected three strong cotton hybrids for large-scale production. This major breakthrough has provided a new avenue for the use of cotton heterosis. As early as the 30s of this century, foreign countries have carried out a study of cotton male sterility. In the recent 20 years, the United States selected six natural cotton-male-sterile cotton male sterile materials from natural variations, but failed to find a maintainer for use in production. Although through distant hybridization, two cytoplasmic cotton male sterile lines were bred and realized