Analysis of Trait Difference in Two-line and Three-line Hybrids of Japonica Rice
LU Weilin
DUAN Renzhou
YU Xinchun
YAN Deyuan
SHEN Guanwang
FU Ding
MA Hanyun
HUO Erwei
Abstract：The agronomic and economic traits of two-line and three-line hybrid rice were analyzed. The re-sults showed that there were extremely significant positive correlations between plant height and panicle length,total grains and filled grains per spike,and panicles and grain weight per plant,while there was significant positive correlation between filled grains and grain weight per plant in both two-line and three-line hybrids of japonica rice. In addition,all the traits above had the positive correlations with grain weight per plant. For the two-line hybrids,the correlation coefficients of panicle length with total grains per spike and 1 000-grain weight were positive and reached a significant level. The direct path coefficient between panicles per plant and yield per plant,and total grains per spike and yield per plant all reached a signifi-cant level in two-line and three-line rice hybrids. The order of direct contribution by four main economic traits to grain yield was as follows:panicles per plant>total grains per spike>setting rate>1 000-grain weight,in which the performance trends of two-line and three-line combinations were consistent.
Keywords：two-line japonica hybrid ricethree-line japonica hybrid riceagronomic traitseconomic traitscorrelation analysispath analysis
Publication Date：2015-05-02
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：4( 42-45 )