摘要： 用K型小麦雄性不育系K149A，保持系149（B）和3个恢复材料L783、太106和PH854（R）及其杂交后代群体F1（A/R），F2，B2（A/F1），B2′（A∥B/R）作为试验材料，对育性指标进行了比较，以恢复性遗传研究的最佳指标——套袋自交结实率为育性指标，对K型小麦雄性不育系的育性恢复的遗传特点进行了初步分析，结果表明K型小麦雄性不育系是配子体不育，三个恢复材料的育性恢复受一对显性基因控制，L783的恢复力强于太106和PH85。

关键词: 小麦, 雄性不育系, 恢复基因, 结实率

Abstract: K149A, a male-sterile line of wheat with Ae.Kotschyi cytoplasm, its maintainer line 149(B) and 3 restoring varieties (R) L783, Tai 106 and PH 85-4 as well as the following generations: F1 (A/R), F2, B2(A/F1), B2'(A∥B/R) were used in the experiment.Seed setting rate under bagging condition was used as indicator of restoring degree.The results showed that the male sterility of K-cytoplasm was gametophytic sterile type, the fertility restoration ability of the three restorers to K149A was governed by a pair of dominant restoring gene and the restoration ability of L783 to K149A was stronger than that of Tai 106 and PH 85-4.

Key words: Wheat(T.aestivum L.), Male-sterile line, Restoring gene, Seed-setting rate