水稻零等位RFLP标记的遗传学研究
文献类型: 中文期刊
作者: 钱前;朱立煌;曹立勇;熊振民;闵绍楷
作者机构:
关键词: 水稻;RFLP;零等位基因;籼、粳形态指数
期刊名称:Acta Botanica Sinica
ISSN: 0577-7496
年卷期: 1997 年 11 期
页码: 1042-1046
收录情况: SCI ; 北大核心 ; CSCD
摘要: 采用8种限制性内切酶与247个已定位到水稻12条染色体上的分子探针组合,对典型籼稻(Oryza sativa L.ssp.indica)“南京11”和粳稻(O.sativa L.ssp.japonica)“金南凤M”以及中间型品种“Bellemont”之间存在的零等位位点进行了分析,9个探针揭示出零等位位点的存在。其中,RG573、G122、G93、G402和G1318特异揭示了“南京11”的零等位,G261特异揭示了“金南凤M”的零等位,RG229特异揭示了“Bellemont”的零等位,C397揭示了“南京11”和“Bellemont”的零等位,而RG131揭示了“金南凤M”和“Bellemont”的零等位。利用“南京11”/“金南凤M”的杂交F_2群体,对其中58个单株进行了7个零等位RFLP标记及程氏指数法中的6个形态性状的测验,据此计算出各植株的零等位基因型及籼、粳分类指数,结果表明:零等位标记在F_2群体中呈显性遗传。在F_2群体中进一步对G93、G122、G261、G402、G1318、C397、RG573零等位标记与程氏指数之间进行了成组数据t测验,发现G93、G122、G402、G1318、G397差异达显著或极显著水平,G261、RG573的t值也较大,显示出零等位标记在籼、粳交后代,可特异鉴定籼、粳差异。
分类号: S511
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