Combining Ability Analysis on Yield Traits of Recombinant Inbred Lines in Hybrid Rice

作     者：曹应江 游书梅 郑家奎 蒋开锋 张涛 杨莉 杨乾华 万先齐 罗婧 李昭祥 高磊 

作者机构：四川省农业科学院水稻高粱研究所/国家水稻改良中心泸州分中心/农业部西南水稻生物学与遗传育种重点实验室四川德阳618000 

基　　金：Innovation Capacity Building Project of Supported by the Youth Fund of Innovation Capability Building Program of Sichuan Provincial Department of Finance(2014QNJJ-01) National High Technology Research and Development Program of China(2011AA10A101) Special Fund for Public Interest(Super Rice)from the Ministry of Agriculture of China(201100) 

出 版 物：《Agricultural Science & Technology》 (农业科学与技术（英文版）)

年 卷 期：2015年第16卷第9期

页      码：1877-1882页

摘      要：A population of 140 recombinant inbred lines at F8 generation were obtained after seven successive generations of self-pollination using single seed descent（SSD） method from the F2 hybrids of three-line restorers Luhui 8258 with high combining ability and Yanghui 34. Then, the 140 inbred lines obtained above and their parents Luhui 8258 and Yanghui 34 were crossed with three different types of cyto-plasmic male sterile（CMS） lines（Gang 46 A, Ⅱ-32 A and Lu 98A） according to NCⅡ design. The resulting 426 combinations were planted at Deyang and Suining bases to test the combining ability and inheritance of five yield traits： yield per plant, panicle number per plant, filled grain number per panicle, seed setting rate and 1 000-grain weight. The results showed that the variances of both general and specific combining abilities of the five traits all reached a significant or extremely significant level at the two sites. The broad and narrow heritability of the yield traits（except 1 000-grain weight whose broad and narrow heritability were both over70%） were all below 50% at the two experimental bases, suggesting that the four traits were easily subjected to environment influence. Very significant positive correlation of general combining ability was found between yield per plant and other traits except 1 000-grain weight. The general combining ability variance showed a normal distribution among the recombinant inbred lines at two sites, right in line with inheritance of quantitative traits. So, the genes controlling rice general combining ability can be targeted by QTL mapping.

主 题 词：Hybrid rice Recombinant inbred lines Yield traits Combining ability 

学科分类：09[农学] 0901[农学-植物生产类] 

D　O　I：10.16175/j.cnki.1009-4229.2015.09.011

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