棉属海岛棉×拟似棉F_1不育性研究  

Studies on the Sterility of F1 from Gossypiumbarbadense ×G. gossypioides

作　　者：王志龙[1] 姜茹琴[1] 何鉴星[1] 张欣雪[1] 孙传渭[1] 

机构地区：[1]中国科学院遗传研究所

出　　处：《Acta Genetica Sinica》1997年第4期368-372,共5页

摘　　要：本文研究了棉属海岛棉［ＧｏｓｓｙｐｉｕｍｂａｒｂａｄｅｎｓｅＬ．，（ＡＤ）２］ｘ拟似棉［Ｇ．ｇｏｓｓｙｐｉｏｉｄｅｓ（Ｕ１ｂｒ）Ｓｔａｎｄｌｅｙ，Ｄ６］Ｆ_１植株的减数分裂及不育花粉的形成过程。Ｆ_１花粉母细胞在减数分裂中期Ｉ平均染色体构型为２４．８６Ⅰ＋６．９８Ⅱ＋０．０５Ⅲ。Ｆ_１不育的根本原因在于减数分裂中期染色体不能正常配对，引起部分染色体滞后及染色体不均等分配，从而产生多分孢子和微核，最终导致不育花粉的产生，并讨论Ｄ６与（ＡＤ）２间的亲缘关系以及克服Ｆ_１不育的方法。The forming process of the sterile pollens and the course of meiosis in F1 plant (Gossypium barbadense×G. gossypiolides)were studied. It was found that mean chromosome configuration at MI in PMC meiosis of F1 was 24.86 Ⅰ+ 6.98 Ⅱ+ 0.05 Ⅲ The substantial reason of F1 sterility was that the chromosomes could not pair normally in meiosis, leading to some lagging and uneven distributing chromosomes, and to multispores, micronuclei and sterile pollens. The relationship between D6 and (AD)2 and the way to overcome the F1 sterility were also discussed in this paper.

关 键 词：棉属 海岛棉 拟似棉 杂交 F1不育性 

分 类 号：S562.032[农业科学—作物学]