水稻新质源不育系K17A的异交习性观察

曾日勇, 刘明, 阴国大
杂交水稻, 1996, (5) : 17-18     追溯原文......本站官方QQ群:62473826
水稻; 新质源不育系; 颖花柱头; 异交习性
四川省农科院水稻高粱研究所

通过对水稻新质源不育系K17A与野败型珍汕97A、印尼水田谷型Ⅱ-32A的异交习性对比观察,发现K17A具有开花期较集中且高峰期较明显;每天花时高峰期较早且明显,与父本花时相遇率较高;颖花柱头外露率高、柱头较长、面积大,对花粉附着力强;柱头生活力强,开花后活力下降慢等特点,利于提高异交结实率,获得较高的繁殖、制种产量

Observation on Outcrossing Habits of New Cytoplasmic Type CMS Line K17A in Rice

Zeng Riyong, Liu Ming, Yin Guoda
Hybrid Rice, 1996, (5) : 17-18
rice; new cytoplasmic type; CMS line; outcrossing habits

A survey was conducted on the outcorssing habits of three cytoplasmic types of CMS lines in rice, in which K17A belongs to K type, Zhenshan 97A belongs to WA type and Ⅱ-32A is IP type. The results indicated that, compared with the other two CMS lines, K17A showed a more concentrated flowering period and an obvious flowering peak; an earlier and more remarkable peak of anthesis time, which resulted in a higher synchronization of anthesis (50%~60%) with the male parent. In the characters of stigma of K17A, th...


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  K17A