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用常规石蜡切片法，对草棉×异常棉（Ａ１×Ｂ１）、草棉×长须棉（Ａ１×Ｂ３）两个杂种一代与各自双亲之一的异常棉和长须棉的雌配子体发育进行了比较研究。结果表明，两个杂种一代大孢子母细胞减数分裂的起始时间比亲本推迟１～２ｄ，减数分裂过程持续时间多２ｄ，雌性败育主要发生在四分孢子到大孢子期间，Ａ１×Ｂ１Ｆ１和Ａ１×Ｂ３Ｆ１败育胚囊分别占观察总数的６６．７％和７１．０％，且在单核至成熟胚囊期间也有较多的异常胚囊类型。败育的主要原因是产生胚囊的大孢子染色体组成不完整。两个杂种在开花前一天的花蕾中，正常成熟的胚囊分别占１５．４％和１０．４％，表明这两个野生种与栽培种草棉亲缘关系较近
The development of the female gametophyte of both anaplasma cotton and long beard cotton of two hybrid generations of cottonseed × anomalous cotton (A1 × B1), cottonseed × long beard (A1 × B3) and one of their parents was carried out by the conventional paraffin section method A comparative study. The results showed that the onset time of meiosis of two megaspore generation megaspore cells was delayed by 1-2 days compared with that of the parents, and the duration of meiosis was more than 2 days. The female abortion mainly occurred during the period from quadruple spore to megaspore, A1 × The aborted embryo sacs of B1F1 and A1 × B3F1 accounted for 66.7% and 71.0% of the total observed, respectively, and there were more abnormal embryo sac types during mononuclear to mature embryo sac. The main reason for abortion is that the megaspore chromosomes that produce the embryo sac are incompletely composed. In the buds of the two hybrids the day before flowering, the normal mature embryo sac accounted for 15.4% and 10.4%, respectively, indicating that the two wild species were closely related to cultivated cotton grass