利用分子标记确定从水稻3N×2N组合中rn得到的F2群体稳定性

摘要

同源三倍体株系43是从水稻双胚苗株系9004群体中筛选出来的。用它作为母本和正常的二倍体粳稻品种"中丹2号”杂交,得到了具有双亲性状的二倍体后代,收获其自交结实种子,次年获得一个表现稳定一致的F２群体,编号"942”。为了证实这个群体稳定的真实性,利用RFLP和SSR 2种分子标记进行了验证。结果表明:这个群体在分子水平上是稳定一致的。%Autotriploid strain 43 selected from twin-seedlings 9004 population was crossed with diploid japon ic a variety zhongdan 2. Some diploid F1 plants were obtained and one stable F2 popu lation No. 942 was generated from the inbred F1 seeds next year.To prove its s ta bility,We employed the RFLP and SSR markers.The results showed that the F2 pop ul ation is uniform at molecular level.