棉花质核不育三系的生态研究

Ecology of Cotton Necleo-plasmic Sterile Three Lines

在三系南北交替选育中,海南冬繁的生态环境,能满足三系繁育的基本要求。除花期低温对不育系铃重有所影响外,其他性状表现正常,均优于山西。通过对比发现,三系表现各具特色。不育系具有早熟、优质和农艺性状较差的特点;恢复系具有农艺性状突出,纤维品质不良的倾向;保持系呈现了生育较迟,其他性状居中的趋势。由此认为,这些特色有利于实现优势组合的性状互补。

The result showed in the process of the alternative selection and breeding of three lines both in South and North China, the ecological environment of Hainan in winter could meet the basic need of three lines breeding. Except low temperature at flower stage had effect on boll weight of sterile line, other characters performed normally and all superior to those in Shanxi. Through comparison it was found each of the three lines had its own feature. The sterile lines were early mature, high quality and poor agronomical characters. R lines were with obvious agronomical character, poor lint quality, B lines showed the development was later, other characters were common. Therefore, it is considered these features are beneficial to realize character complementation of advantage combination.