1975年以来,我们进行了棉属种间杂交培育胞质雄性不育系的研究。几年来我们先后研究过海岛棉、蓬蓬棉与陆地棉杂交“核置换”,通过杂种胚珠离体培养及二倍体棉种染色体倍性化方法,克服二倍体棉种中棉、草棉、中×草、瑟伯氏棉与陆地棉杂交的不亲和性,并采用回交及杂交幼铃激素处理克服后代的不孕性,获得中棉、草棉、瑟伯氏棉同源四倍体、中×草异源四倍体与陆地棉杂交的杂种及不同次数的回交后代,并从中棉胞质材料中,得到了一些完全雄性不育或高度雄性不育材料,目前正进行保持系的选育。现将我们对中草棉异源四倍体与陆 Since 1975, we conducted a study on cotton cytoplasm male sterile line breeding. Over the past few years we have studied the island cotton island, cotton Puma and cotton crossbred “nuclear replacement”, through hybrid embryo in vitro culture and diploid cotton chromosome ploidy method to overcome the diploid cotton varieties cotton, cotton grass , In × grass, Cerberus cotton and cotton incompatibility, and the use of backcross and hybridization of young bell hormone treatment to overcome the offspring of infertility, access to cotton, cotton grass, Cerberus homologous four Ploidy, × hybrids allotetraploid hybrid with G. hirsutum hybrids and different times of backcrossing progenies, and from the cotton cytoplasm material, some completely male sterile or highly male sterile material is currently being carried out Maintain the Department of breeding. Now we are all cotton and tetraploid and Lu