陕西省小麦抗白粉病基因及新育成小麦品种(系)抗白粉病分析  

Analysis on resistant genes and new-breeding wheat cultivars (lines) for resistance to powdery mildew in Shaanxi Province

作　　者：李强[1] 王保通[1] 吴兴元[1] 段双科[1] 王芳[1] 

机构地区：[1]西北农林科技大学植物保护学院陕西省农业分子生物学重点实验室,杨凌712100

出　　处：《植物保护学报》2008年第5期438-442,共5页Journal of Plant Protection

基　　金：国家"十一五"科技支撑计划(2006BAD08A05);国家公益性行业计划(nyhyzx08-048);陕西省"13115"科技创新工程重大科技专项(2006K02-G10-01);教育部长江学者和创新团队发展计划项目(200558);高等学校学科创新引智计划(No.B07049)

摘　　要：为明确已知小麦抗白粉病基因载体品种以及2005—2007年陕西省新育成小麦品种(系)的抗病性,采集陕西关中不同地区小麦白粉病菌作为菌源,分年度在人工诱发病圃中对32份已知抗白粉病基因品种及578份新育成小麦品种(系)进行鉴定。结果表明,目前在陕西省仅Pm21、Pm4a、Pm5+6、Pm2+Talent及小黑麦具有优良的抗病性;Pm4b、Pm5(Mli)、Pm13、Pm19、Pm"Era"、Pm2+Mld的抗病性较弱;其它基因抗病性较差。新育成的小麦品种(系)中绝大部分对白粉病表现感病,苗期和成株期均抗病的材料仅27份,占4.67%,成株期抗病性的46份,占7.96%,其中,簇毛麦后代材料抗病性较高。To evaluate the known resistant genes of powdery mildery and new-breeding euhivars （lines） in 2005 - 2007 for resistance to wheat powdery mildew in Shaanxi Province, 32 wheat varieties （lines） carried these known resistant genes and 578 new-breeding euhivars （lines） were identified in the disease nursery. The results showed that only Pm21, Pm4a, Pm5＋6, Pm2＋ Talent and Triticale showed high resistance, and Pm4b, Pm5（ Mli） , Pm13, Pm19, Pm“Era”, Pm2 ＋ Mld had weak resistance and the remainder genes became susceptible. The identification results of new-breeding cultivars （lines） indicated that most of these cultivars （lines） were susceptible, and 27 eultivars （lines） were resistant both at seedling and adult stage which percent was 4.67% , and 46 cultivars （lines） were resistant only at adult stage which percent was 7.96%. Progenies from Haynaldia viUosa showed fine resistance.

关 键 词：小麦白粉病 抗病基因 小麦品种(系) 

分 类 号：S512.1[农业科学—作物学]