doi:10.15933/j.cnki.1004-3268.2018.02.014

Abstract

摘要： 对春小麦品种川育19的抗叶锈性进行了遗传分析，以期为小麦抗叶锈病育种提供理论指导。作为父本，川育19分别与感病品种Thatcher及小麦抗叶锈病近等基因系Lr1和Lr3的载体品系Tc*6/Centenario和Tc*6/Democrat杂交，获得F1、F2和F3后，分别在苗期和成株期进行抗病性测定。在苗期，接种致病类型BGD/HL，Thatcher×川育19杂交组合的F2符合15（抗病）∶1（感病）的分离比例，而其余2个杂交组合的F2均全部抗病，说明川育19含有显性遗传的抗叶锈病基因Lr1和Lr3，并相互独立控制对致病类型BDG/HL的抗病性；接种致病类型FBC/GN（或SHJ/GL），Thatcher×川育19杂交组合的F2符合3（抗病）∶1（感病）的分离比例，而Tc*6/Centenario（Lr1）×川育19 [或Tc*6/Democrat（Lr3）×川育19]杂交组合的F2全部抗病，说明川育19含有呈显性遗传的抗叶锈病基因Lr1（或Lr3）且控制对致病类型FBC/GN（或SHJ/GL）的抗病性。在成株期，上述3个杂交组合的F2均符合9（抗病）∶7（感病）的分离比例，说明川育19的成株期抗病性由2对互补遗传的显性抗叶锈病基因控制且Lr1和Lr3在成株期不起作用。

关键词: 春小麦, 川育19, 叶锈病, 抗病性, 遗传分析

CLC Number:

S435.121

袁军海,沈凤英,吴伟刚,张爱香. 春小麦品种川育19抗叶锈性遗传分析[J]. 河南农业科学, 2018, 47(2): 67-72.

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春小麦品种川育19抗叶锈性遗传分析

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