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利用同核异质广亲和不育系真系秋光 A,研究 3种不育细胞质对杂交稻 16个性状的遗传效应。结果表明 :(1)不育细胞质在结实率、每穗实粒、单株产量、株高 4个性状上表现显著的负效应 ,在抽穗期、千粒重 2个性状上表现显著的正效应 ,单株穗数、每穗总粒及 8个品质性状不育细胞质效应不显著 ,不育细胞质效应与相对效应的分析结果基本一致 ;(2 )不育细胞质遗传效应的大小与细胞质的可恢复性有关 ,BT型细胞质的可恢复性较好 ,细胞质效应较小 ,WA型细胞质最难恢复 ,细胞质效应最大 ;(3)品种间组合和亚种间组合的不育细胞质效应无显著差异 ,但杂种不育细胞质效应的大小与恢复系恢复力的强弱有关 ;(4 )某性状不育细胞质效应的大小和有无决定于该性状与育性性状的密切程度。
Using the isonuclear heterozygous male sterile line Zhenxianqiuguang A, the genetic effects of three kinds of sterile cytoplasms on 16 traits of hybrid rice were studied. The results showed that: (1) Sterile cytoplasm showed significant negative effects on the four traits of seed setting, grain yield per plant, yield per plant, plant height, and significant positive effect on the two traits at heading and grain weight per plant The number of panicle per panicle, total panicles per panicle, and eight quality traits were not significantly affected by cytoplasmic male sterility. The results of sterile cytoplasm and relative effects were basically consistent. (2) The cytoplasmic effect of sterile cytoplasm was related to the cytoplasmic recoverability , BT type cytoplasm recoverability is better, cytoplasmic effect is less, WA type cytoplasm is the most difficult to restore, the cytoplasmic effect is the most; (3) inter-species combinations and subspecies combinations of sterile cytoplasmic effect was no significant difference, but the hybrid is not The size of the cytoplasmic effect of fertility was related to the strength of restoring ability of restorer lines. (4) Whether the cytoplasmic effect of some traits of infertility depends on the closeness between the traits and fertility traits.