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大鹅观草与阿拉善鹅观草杂种的形态学和细胞学研究(英文)
张海琴;周永红;郑有良;杨瑞武;丁春邦
1.四川农业大学小麦研究所;2.四川农业大学小麦研究所 四川都江堰611830;3.四川都江堰611830
摘要:
为探讨阿拉善鹅观草 ( R.alashanica( Keng) S.L.Chen)的染色体组组成 ,进行了大鹅观草 ( R.grandisKeng( 2 n=2 4 ,St St YY) )和阿拉善鹅观草种间杂交 ,对这两个种及其杂种 F1的形态学、繁育学和减数分裂染色体配对行为进行了研究。结果表明 :杂种 F1的形态特征介于父母本之间 ,其花粉母细胞减数分裂染色体平均构型为 :2 0 .4 0 +3.6 9 +0 .0 9 +0 .0 4 。表明阿拉善鹅观草含有一个修饰的 St基因组 ,即 Sta。
关键词:  大鹅观草    阿拉善鹅观草    种间杂交    减数分裂    基因组    染色体配对
DOI:
分类号:
Fund project:教育部骨干教师资助项目教技司 [2 0 0 0 ]6 3号
Abstract:
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