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通过对超级杂交中稻丰两优香1号亲本的系统观察,摸清了其异交特性。丰两优香1号父母本的花时早而集中,花时相遇较好,但两者群体抽穗历期差异较大,花期相遇不太理想;母本广占63S的柱头体积大、生活力强,但外露率较低;包颈程度轻,颖间距和开颖角度较大,张颖历期长;父本丰香恢1号的花粉量较少。丰两优香1号亲本具有较高的异交结实潜力,但仍存在一些弊端,在制种上应根据亲本特性采取相应的技术措施,以提高制种产量。
Through the systematic observation of the super hybrid rice “Fengliangyou 1”, we found out the outcrossing characteristics. Feng Liang You You 1 parents of the early and concentrated flower time, flower time to meet better, but the two groups of large differences in heading date, flowering is less than ideal; female parent accounted for 63S stigma bulky volume, viability Strong, but the exposed rate is lower; the degree of the package neck is light, the distance between the Ying and the Ying is larger, and Zhang Ying has a long history; the father, Fengxiang Hui 1, has less pollen. Fengliangyouxiang No.1 had higher potential for outcrossing and fruiting, but there were still some drawbacks. Corresponding technical measures should be taken according to the characteristics of parents to improve seed production.