福建农业学报2011，Vol.26Issue(2)：211-214,4.
杂交中稻产量构成因素与产量相关性的分析
Correlation Between Yield and Yield Components of Hybrid Mid-season Rice
摘要
Abstract
Yield and yield components of 30 mid-season rice hybrids were studied in a joint regional field test in Fuzhou during 2007-2009. Data for identifying and selecting new stable, high-yield, mid-season rice varieties, as well as, establishing the cultivation technology was obtained. A differential analysis indicated that the difference on the variation coefficients for grain weight was the smallest among all, and the characteristics of the varieties tended to be relatively stable. The regression analysis showed that the 5 yield components positively correlated with yield,with the panicle number, filled spikelets per panicle and seed-setting rate significantly correlated. The partial correlation analysis showed that the panicle number, filled spikelets per panicle and grain weight had significant positive correlations with yield, while the partial correlation coefficient between spikelets per panicle or seed-setting rate and yield was negative, and not significant. The path analysis indicated that the direct effects of the panicle number, filled spikelets per panicle and grain weight on yield were all positive, and the filled spikelets per panicle contributed most greatly to the effect. All indirect effects of the panicle number, filled spikelets per panicle and grain weight on yield were negative, with the panicle number affected by the grain weight relatively high. When all factors were taken into consideration, the filled spikelets per panicle and panicle number should be the critical criteria for selection. However, at the same time, the grain weight and spikelets per panicle, as well as a relatively stable seed-setting rate could not be neglected.关键词
杂交中稻/产量构成因素/产量/相关性/效应Key words
mid-season rice hybrid/ yield components/correlation分类
农业科技引用本文复制引用
胡蓉..杂交中稻产量构成因素与产量相关性的分析[J].福建农业学报,2011,26(2):211-214,4.基金项目
福州市农业局良种繁育项目(2007-2009) （2007-2009）
