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杂交水稻大面积推广以来,对提高粮食产量起了重大的作用。但目前水稻杂种优势利用在生产上也存在一些问题,急需选育水稻新三系,配制强优新组合。为了探索水稻杂优组合的选育与水稻常规育种的异同,笔者于1980年对近期育成的40个杂种一代与13个恢复系的9个主要性状之间的相关、回归
Since the popularization of hybrid rice on a large scale, it has played a significant role in improving grain yield. However, at present, the utilization of heterosis in rice also has some problems in production. There is an urgent need to select new three lines of rice and formulate the new combination of superiority and superiority. In order to explore the similarities and differences between the breeding of hybrid rice combinations and conventional rice breeding, the correlation between the nine major traits of 40 hybrids and 13 restorer lines bred recently in 1980 was regression