论文部分内容阅读
本试验用相关和优势指数法分析了27个杂交粳稻的产量构成因素与产量的相关性和各主要性状的杂种优势的强弱。其结果是各产量构成因素与杂交稻产量相关的顺序为每亩有效穗数>平均每穗总粒数>空壳率>千粒重。抽穗期与每穗总粒数和空壳率没有明显的相关,但与产量却成负相关。杂交粳稻的杂种优势就平均优势看,株高优势强于茎叶重优势,有效穗数优势强于粒重和每穗总粒数优势。但不同组合有差异。
In this study, the correlation between yield components and the yield components of 27 japonica hybrids and the heterosis of main traits were analyzed by correlation and predominance index method. As a result, the order of yield components and yield of hybrid rice was the number of panicles per acre> the average number of panicles per panicle> the percentage of shell> the weight of 1000-kernels. There was no significant correlation between heading date and total grains per panicle and shell percentage but negatively correlated with grain yield. Heterosis of japonica hybrid rice showed that the average superiority of plant height was stronger than that of stem and leaf. The effective number of panicles was stronger than the grain weight and the total grain number per panicle. But there are differences between different combinations.