农学学报2012，Vol.2Issue(10)：1-4,13,5.
籼粳亚种间杂交水稻‘甬优12’产量性状的相关及通径分析
Correlation and Path Analysis of Yield Traits on ‘Yongyoul2' Indica-japonica Intersubspecific Hybrid Rice
摘要
Abstract
In order to make clear the high yield and efficiency cultivation techniques for indica-japonica intersubspecific hybrid rice‘ Yongyoul2', 145 sets of data from 7 test sites in Taizhou and Ningbo from 2009 to 2011 were collected to study the constitutions of panicle, grain, grain weight under different yield levels and make the correlation and regression analysis when ‘Yongyou 12' was planted as single cropping late rice. The correlation analysis showed that, the whole grain number and filled grain number per panicle were significantly positive with yield, while the effective panicle and thousand-grain weight were significantly negative with yield. The multiple regression analysis established the multiple regression models between the yield and the yield traits: 33 =-8012.58+27.29xl+36.59x2-25.53x3+ 165.61x4-239.75xs_+766.42. Path analysis suggested that, among the main economic traits of rice, the highest direct effect panicle numbers on yield reached to 2.3526. Accordingly, controlling the number of effective panicle properly, emphasizing the large panicles and improving the seed setting rate were proposed for the high yield and efficiency cultivation techniques for ‘Yongyoul2' as single cropping late rice. Meanwhile, the cultivation techniques could also serve as a technique route for effective breeding of superior high-yield rice.关键词
籼粳亚种间杂交水稻/‘甬优12’/单季晚稻/产量性状/通径分析Key words
Indica-japonica Intersubspecific Hybrid Rice/'Yongyoul2'/Single Cropping Late Rice/YieldTraits/Path Analysis分类
农业科技引用本文复制引用
刘伟明..籼粳亚种间杂交水稻‘甬优12’产量性状的相关及通径分析[J].农学学报,2012,2(10):1-4,13,5.基金项目
台州市科学技术重大贡献奖项目“单季稻高产高效栽培技术研究”（台政办发[2010]124号）. （）
