数字农科院2.0

EMS诱发小麦京411突变群体构建及Wx-A1基因突变体鉴定

文献类型: 中文期刊

作者: 李晓;郭会君;闫智慧;赵世荣;赵林姝;古佳玉;谢永盾;刘录祥

作者机构:

关键词: 小麦;TILLING;EMS;突变群体;Wx-A1基因

期刊名称:核农学报

ISSN: 1000-8551

年卷期: 2016 年 30 卷 11 期

页码: 2081-2087

收录情况: 北大核心(2020版) ; CSCD(2020-2021年度) ; 农林核心(2020版) ; 科技核心(2020版)

摘要: 为扩大小麦突变群体类型,提高目的基因点突变挖掘效率,选用北部冬麦区骨干亲本京411为材料,利用甲基磺酸乙酯(ethyl methylsulfonate,EMS)化学诱变剂构建小麦突变群体,以Wx-A1为候选基因,用TILLING技术检测所创建的突变群体。结果表明,0.90%EMS溶液处理8 h和1.50%EMS溶液处理4 h均能获得较好的损伤效果,致死率分别达到38.47%和56.00%;在此基础上创建了包含867个株系的M2突变群体,在该群体中获得Wx-A1基因的7个点突变,突变密度为1/67.0 kb;其中预测有功能变异的4个错义突变系均可以稳定遗传至下一代,其直链淀粉含量降低2.8%~7.4%。本研究所构建的小麦突变群体可以作为其他目的基因的TILLING检测材料,用于小麦目的基因突变挖掘及功能基因组学研究。

分类号: S512.1

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