马铃薯栽培种与野生种叶肉细胞融合及体细胞杂种鉴定

被引:18
作者
蔡兴奎
柳俊
谢从华
机构
[1] 华中农业大学园艺林学学院
[2] 华中农业大学生命科学技术学院
关键词
马铃薯; 原生质体融合; 体细胞杂种; 遗传分析;
D O I
10.16420/j.issn.0513-353x.2004.05.013
中图分类号
S532 [马铃薯(土豆)];
学科分类号
摘要
以马铃薯栽培种Solanumtuberosum‘中薯二号’的无性系 3# 、 8# (2n =4 8)和二倍体野生种Solanumchacoense (2n =2 4 )的无菌苗为原生质体来源 ,比较了PEG (聚乙二醇 )融合和电融合两种方式马铃薯原生质体融合效果的影响。结果显示 ,两种融合方式对细胞的融合率没有显著差异 ,但电融合的细胞植板效率和愈伤组织分化能力均显著高于PEG融合法。在早期挑选的生长旺盛的愈伤组织再生的 10 0个株系中 ,经RAPD标记检测有 97个系为体细胞杂种。杂种植株经流式细胞仪倍性分析表明 ,5 2 6 %为六倍体 ,14 4 %为八倍体 ,14 4 %为非整倍体 ,18 6 %为混倍体。叶绿体SSR引物NTCP 9用于细胞质重组检测 ,结果显示 ,体细胞杂种中叶绿体具有偏亲现象 ,大多数杂种只含有单一亲本的叶绿体类型 ,只有16 5 %株系为叶绿体重组的杂种植株。
引用
收藏
页码:623 / 626
页数:4
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