青海春小麦品种‘青春38’成株期抗条锈性遗传解析  

Genetic analysis of adult plant resistance to stripe rust in Qinghai spring wheat cultivar 'Qingchun 38'

作　　者：张调喜 闫佳会[1] 侯璐[1] 张贵[1] 姚强[1] 马麟[2] 郭青云[1] ZHANG Tiaoxi;YAN Jiahui;HOU Lu;ZHANG Gui;YAO Qiang;MA Lin;GUO Qingyun(Academy of Agricultural and Forestry Sciences,Qinghai University,Qinghai Academy of Agricultural and Forestry Sciences, Scientific Observing and Experimental Station of Crop Pests in Xining,Ministry of Agriculture,Key Laboratory of Agricultural Integrated Pest Management,State Key Laboratory of Plateau Ecology and Agriculture,Xining 810016,China;Datong Agricultural Technology Promotion Center of Xining,Qinghai Province,Xining 810100,China)

机构地区：[1]青海大学农林科学院,青海省农林科学院,农业部西宁作物有害生物科学观测实验站,青海省农业有害生物综合治理重点实验室,青海大学省部共建三江源生态与高原农牧业国家重点实验室,西宁810016 [2]青海省西宁市大通县农业技术推广中心,西宁810100

出　　处：《植物保护》2018年第5期247-252,共6页Plant Protection

基　　金：国家自然科学基金(31660513);青海省自然科学基金(2017-ZJ-793;2016-HZ-810)

摘　　要：为明确青海春小麦品种‘青春38’成株期抗条锈性的遗传基础,以‘青春38’为父本与感病春小麦品种‘Taichung 29’(T29)杂交构建F2∶3代分离群体。在青海西宁和互助两地田间病圃进行了抗条锈性鉴定,应用植物数量性状主基因+多基因混合遗传模型单个分离世代分析方法,解析‘青春38’的抗条锈性遗传特点。结果表明,‘青春38’/‘T29’F2∶3群体单株的病害严重度和反应型在两个试验点均未呈现连续性分布,也不符合正态分布,初步推测‘青春38’对小麦条锈病的成株期抗性具有质量性状特征;以严重度或反应型数据进行遗传分析,‘青春38’在两个试验点对小麦条锈病的成株期抗性表现的最优遗传模型均属2对主基因遗传,只是主基因的作用方式(C-1:2MG-ADI加性-显性-上位性,C-4:2MG-EA等加性,C-6:2MG-EEAD等显性)有所不同。In order to elucidate the genetic basis of adult plant resistance of spring wheat‘Qingchun 38’to stripe rust in Qinghai,a F 2∶3 segregating population was developed by crossing‘Qingchun 38’(as male parent)with‘Taichung 29’(T29)(as female parent),a susceptible cultivar.Disease screening was conducted at Xining and Huzhu in Qinghai Province.Single generation of major gene plus polygene mixed inheritance model was used to analyze the inheritance of stripe rust resistance in‘Qingchun 38’.Disease severity and infection type of‘Qingchun 38’/‘T29’F 2∶3 populations showed discrete distributions,suggesting a qualitative character of stripe rust resistance in‘Qingchun 38’.Genetic analysis results in two environments indicated that the two major gene model could explain the resistance of‘Qingchun 38’on disease severity and infection type,but the gene interactions(C-1:2MG-ADI additive-major-epistatic interaction,C-4:2MG-EA equal additive effect,C-6:2MG-EEAD equal dominance effect)were different.

关 键 词：春小麦 青春38 抗条锈性 遗传模型 

分 类 号：S435.121[农业科学—农业昆虫与害虫防治]