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杂交稻恢复系之一的明恢63,自投入大面积制种以来,以它分蘖力强,生长势旺,抗病力强,花粉量大,制种产量高,配合力广,所配组合的杂种优势显著等优良特征特性而颇受广大水稻制种工作者的青睐。为了充分利用和保持这一优良恢复系的种性及纯度,延长它在杂交稻种子生产中的使用年限,对明恢63原种的防杂保纯技术进行了以下探索: 1.引种快繁、穗选留种我县1985～1986年使用的明恢63是从广东直接调入的,其种源来自制种田,有发生混杂退化的潜在可能。为快速更新这一亲本,1986年春从营山县种子公司索取了他们在福建省三明市农科所引回的
Minghui 63, one of the restorer lines of hybrid rice, has been widely used in many fields since it was put into large-scale seed production, with its strong tillering ability, vigorous growth, strong disease resistance, large amount of pollen, high seed yield, The superiority of heterosis and other excellent characteristics of the characteristics of the majority of rice seeded workers of all ages. In order to make full use of the fineness and purity of this elite restorer line and prolong its useful life in the hybrid rice seed production, the following aspects were explored in this paper: 1. Introduction Spike election to stay species Myeong 1985 to 1986 used Minghui 63 directly transferred from Guangdong, the origin of the system of farming, there is the potential for hybrid degeneration. In order to quickly update this parent, they retrieved from Yingshan Seed Co. in the spring of 1986 their agricultural sciences in Sanming City, Fujian Province