利用水稻重组自交系进行配合力遗传分析  

Combining Ability Analysis in Rice Using Recombinant Inbred Lines

作　　者：付新民[1] 王岩[1] 高冠军[1] 何予卿[1] 

机构地区：[1]华中农业大学作物遗传改良国家重点实验室,武汉430070

出　　处：《华中农业大学学报》2010年第4期397-402,共6页Journal of Huazhong Agricultural University

基　　金：国家自然科学基金项目(30671114);国家"863"高技术研究发展专项(2007AA10Z108);植物转基因专项和现代农业水稻产业技术体系项目资助

摘　　要：以明恢63与B5和中国香稻构建的重组自交系为材料,结合分子标记辅助选择恢复基因(Rf3/Rf4)和B5来源的抗稻飞虱基因(Bph14/Bph15)共获得17个恢复系,分别与3个野败型细胞质雄性不育系杂交,采用NCⅡ遗传交配设计,分析了9个农艺性状的配合力、遗传力和相关关系。结果表明:除单株有效穗数外,其他性状的一般配合力均达极显著水平,生育期、每穗实粒数和结实率的特殊配合力差异达到极显著水平。9个性状加性效应占主导地位。大多数农艺性状受不育系影响比较大,仅株高和结实率受恢复系的影响较大。大多数农艺性状的广义遗传力和狭义遗传力均大于60%,仅单株有效穗数和单株产量性状的广义遗传力和狭义遗传力小于50%。单株产量的一般配合力与单株有效穗数、每穗实粒数和结实率的一般配合力呈显著或极显著正相关。播始历期、穗数、每穗总粒数、结实率和千粒重等性状的一般配合力与其表型值间的相关达到显著或极显著水平。Seventeen restorer lines with fertility restorer（Rf3/Rf4） and plant hopper resistance（Bph14/Bph15） from B5 genes were obtained with molecular marker-aided selection from recombinant inbred lines constructed through crossing Minghui 63 with B5 and Zhongguoxiangdao.Combining ability,heritabilities and correlation of nine agronomic traits were analyzed using NCII experiment design to cross the 17 restorer lines with 3 wild-abortive type cyto-plasmic male sterile（CMS-WA）lines.The results showed that the general combining ability of nine agronomic traits except tillers per plant were significantly different（P0.05 and P0.01）.The special combining ability of heading date,grains per panicle and seed setting were highly different（P0.01）.These traits were controlled largely by additive effect.Most traits were affected by sterile lines except plant height and seed setting influenced much more by restorer lines.The broad heritability and narrow heritability of most traits were higher than 60%.Broad heritability and narrow heritability of tillers per plant and yield were lower than 50%.Yield per plant were significantly correlated with tillers per plant,grains per panicle and seed setting at P0.05 and P0.01.Correlation coefficient were significant at P0.05 and P0.01 between general combining ability and phenotypic values for most traits.

关 键 词：水稻 配合力 遗传力 相关 

分 类 号：S511.035.3[农业科学—作物学]