人工合成抗纹枯病小麦新种质的鉴定  

Identification of Synthetic Wheat Accessions with Resistance to Wheat Sharp Eyespot

作　　者：魏学宁[1] 任丽娟[2] 张淼[1,3] 张巧凤[2] 刘欣[1] 周淼平[2] 马鸿翔[2] 吴继中[2] 马翎健[3] 张增艳[1] 

机构地区：[1]中国农业科学院作物科学研究所/农作物基因资源与基因改良国家重大科学工程/农业部麦类生物学与遗传育种重点实验室,北京100081 [2]江苏省农业科学院,南京210014 [3]西北农林科技大学农学院,陕西杨凌712100

出　　处：《植物遗传资源学报》2015年第2期373-378,共6页Journal of Plant Genetic Resources

基　　金：国家"863"项目(2012AA101105)

摘　　要：小麦纹枯病是影响我国小麦生产的主要土传病害。培育、推广抗纹枯病小麦品种是防治该病害最经济、有效的方法。普通小麦中抗源匮乏,严重制约抗纹枯病小麦育种的进展。为发掘人工合成小麦中纹枯病新抗源,本试验通过人工接种、抗病鉴定方法,在江苏省和北京市两地,对来源于国际玉米小麦改良中心的102份人工合成六倍体小麦品系,进行4年的纹枯病抗性的多环境鉴定。结果表明,人工合成小麦品系间对小麦纹枯病抗性存在差异,在其中进行小麦纹枯病抗源的筛选是有效的。与普通小麦品种扬麦158、扬麦12相比,这102份人工合成小麦的大部分对纹枯病的抗性表现抗或中抗水平,其中一些品系在多年多点鉴定中表现稳定抗性,如ZC93、ZC111、ZC112、ZC123、ZC172、ZC206和ZC221表现为抗病水平,病情指数低于目前最好的普通小麦抗源,可作为抗纹枯病小麦育种的新抗源。During last decades,the wheat sharp eyespot has occurred in many winter production regions. To mine the accessions with good resistance to wheat sharp eyespot,102 synthetic hexaploid wheat lines from CIMMYT were evaluated for resistance to wheat sharp eyespot in field and greenhouse at Jiangsu province and Beijing city from 2007 to 2010. The results showed that these synthetic wheat lines displayed different degree of the resistance,suggesting that the selection of wheat sharp eyespot resistance source among these lines was effective. Compared with the common wheat cultivars Yangmai 158 and Yangmai 12,most of 102 synthetic wheat showed better resistance with lower disease index. Seven synthetic wheat lines consistently displayed better resistance to wheat sharp eyespot at the four tested sites from 2007 to 2010. These 7 resistant synthetic wheat lines included ZC93、ZC111、ZC112、ZC123、ZC172、ZC206 and ZC221. Thus,these 7 synthetic wheat lines could be used as novel resistance sources in wheat breeding with resistance to wheat sharp eyespot.

关 键 词：人工合成六倍体小麦 小麦纹枯病 抗性 病情指数 

分 类 号：S512.1[农业科学—作物学]