粳型杂交水稻优势及相关分析  

Heterosis and Correlation Analysis for Three-line Aponica Hybrid Rice

作　　者：朱镇[1] 赵凌[1] 张亚东[1] 王才林[1] 

机构地区：[1]江苏省农业科学院粮食作物研究所江苏省优质水稻工程技术研究中心,江苏南京210014

出　　处：《金陵科技学院学报》2007年第3期53-56,共4页Journal of Jinling Institute of Technology

基　　金：农业部超级稻新品种选育与示范项目;农业结构调整重大技术研究专项(05-01-05B);江苏省高技术研究项目(BG2004304;BG2005301)

摘　　要：对34个三系杂交粳稻组合的8个主要农艺性状进行优势和相关分析。结果表明,杂交粳稻在每株穗数、每穗粒数、千粒重方面具有较强的竞争优势,每穗实粒数、结实率等性状优势微弱;通径分析结果表明,对杂种一代单株粒重有显著影响的3个性状中,以每穗实粒数的作用最大,其它依次为每株穗数和千粒重。Heterosis and correlation analysis were conducted for 34 three-line japonica hybrid rice in 8 agronomic characters. The results showed that the competitive heterosis was significant in such characters as panicles per plant, kernels per panicle, 1000-grain weight, while the heterosis of such characters as seed per panicle, seed setting rate was weak. The result of path analysis indicated that among the 3 characters the number of grains per panicle showed the greatest effect on the grain weight per plant of F1 hybrids, and next to this characters was the panicles per plant and the 1000- grain weight showed more effect on it.

关 键 词：粳型杂交水稻 农艺性状 杂种优势 

分 类 号：S511.22[农业科学—作物学]