栽培大豆耐盐性的主基因+多基因混合遗传分析  

THE MIXED INHERTANCE ANALYSIS OF SALT TOLERANCE IN CULTIVARS OF GLYCINE MAX

作　　者：罗庆云[1] 於丙军[1] 刘友良[1] 章元明[2] 薛艳玲[1] 张艳[1] 

机构地区：[1]南京农业大学生命科学学院,南京210095 [2]南京农业大学大豆研究所农业部国家大豆改良中心,南京210095

出　　处：《大豆科学》2004年第4期239-244,共6页Soybean Science

基　　金：国家自然科学基金(39870069)教育部博士点基金(1999002005)瑞典国际科学基金(IFS)(C3143-1)863计划(2002AAZZ4061)资助项目

摘　　要：选用栽培大豆南农1138-2(耐盐)、南农88-31(较耐盐)和Jackson(盐敏感)配制的南农1138-2×南农88-31和南农88-31×Jackson等2套组合,通过P1、P2、F1、F2和F2:3苗期植株耐盐性调查,利用主基因+多基因混合遗传模型联合分离分析了栽培大豆耐盐性的遗传规律。结果表明南农88-31×Jackson和南农1138-2×南农88-31耐盐性遗传均符合加性-显性-上位性多基因遗传模式。在高世代选择耐盐性植株的效率较高,从F2:3估计,南农88-31×Jackson组合的NaCl耐性微效基因遗传率为82.13%;南农1138-2×南农88-31组合的耐盐性微效基因遗传率为67.47%。Inheritance of salt tolerance in P1 ,P2 ,F1 ,F2 and F2:3 from two cross of Nannong 88 - 31 X Jackson and Nannong 1138 - 2 X Nannong 88 - 31 were investigated by the mixed major gene plus poly-gene inheritance model of quantitative traits. The joint analyses results showed that salt tolerance of soybean cultivars was controlled by minor gene (the C - 0 model). Heritability value of the minor gene was estimated as 82.13% and 67. 47% in F2:3 from cross of Nannong 88 - 31X Jackson and Nannong 1138 - 2 X Nannong 88-31, respectively. This indicated that, for breeding of salt tolerant soybean, we should select the salt tolerant seedlings in advanced generation.

关 键 词：栽培大豆 耐盐性 “主基因+多基因”遗传模式 混合遗传 多世代联合分离分析 

分 类 号：S565.1[农业科学—作物学]