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当前位置: 首页 > 文章 > 两系和三系杂交粳稻组合性状差异性分析 河南农业科学 2015,44 (5) 42-45
Position: Home > Articles > Analysis of Trait Difference in Two-line and Three-line Hybrids of Japonica Rice Journal of Henan Agricultural Sciences 2015,44 (5) 42-45

两系和三系杂交粳稻组合性状差异性分析

作  者：
鲁伟林;段仁周;余新春;严德远;申关望;扶定;马汉云;霍二伟
单  位：
信阳市农业科学院
关键词：
两系杂交粳稻;三系杂交粳稻;农艺性状;经济性状;相关分析;通径分析
摘  要：
以自育两系和三系杂交粳稻组合为材料,对植株的农艺和经济性状进行了分析,结果表明,两系和三系杂交粳稻组合中株高与穗长、穗总粒数与穗实粒数、单株穗数与单株谷质量均表现极显著正相关,穗实粒数与单株谷质量的相关系数达到显著水平,每个性状与单株谷质量均表现为正相关;两系杂交粳稻组合的穗长与穗总粒数、千粒质量等表现显著或极显著正相关;两系和三系杂交粳稻组合中单株穗数与单株产量、穗总粒数与单株产量的直接通径系数均达到极显著水平;4个主要经济性状对产量直接贡献的大小依次为单株穗数、穗总粒数、结实率和千粒质量,两系组合和三系组合表现趋势一致。
译  名：
Analysis of Trait Difference in Two-line and Three-line Hybrids of Japonica Rice
作  者：
LU Weilin;DUAN Renzhou;YU Xinchun;YAN Deyuan;SHEN Guanwang;FU Ding;MA Hanyun;HUO Erwei;Xinyang Academy of Agricultural Sciences;
关键词：
two-line japonica hybrid rice;;three-line japonica hybrid rice;;agronomic traits;;economic traits;;correlation analysis;;path analysis
摘  要：
The agronomic and economic traits of two-line and three-line hybrid rice were analyzed. The results 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 threeline 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 significant 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.

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