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作 者 ：黎垣庆;袁隆平

期 刊 ：作物学报 1990年 16卷 02期 页码：176-182

关键词：双胚苗；无融合生殖；

Keywords:Twin seedlings, Apomixis,

摘 要 ：APⅠ、APⅡ、APⅢ和 APⅣ四个双胚苗品系分别具有16.1%、23.4%、32.4%和5.0%的双苗率,双苗中有一个中胚轴和两个中胚轴的两种类型。以双胚苗为母本与显性紫色稻杂交,F1出现1.8—3.8%的绿色双苗或单苗,因此,四个双胚苗品系中可能存在低频率的无融合生殖。双胚苗是可遗传的,受两对隐性基因控制,而双苗频率的高低则受修饰因子的

Abstract:Four selected lines of rice,designated as API,APⅡ,APⅢ,and APⅣ,exhibited the lines of twin seedlings.The percentages of twin seedlings of them were16.1%,23.4%,32.4% and 5.0% respectively.There were two types of twin seedlings,those with only one-mesocotyl and those with two-mesocotyls.4 crosses we

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