玉米抗禾谷镰孢菌穗粒腐病种质资源鉴定  

Identification for Ear Rot Resistance against Fusarium graminearum in Maize Germplasm

作　　者：苏爱国[1] 王帅帅 段赛茹 张如养[1] 邢锦丰[1] 杨扬[1] 宋伟[1] 赵久然[1] SU Ai-guo;WANG Shuai-shuai;DUAN Sai-ru;ZHANG Ru-yang;XING Jin-feng;YANG Yang;SONG Wei;ZHAO Jiu-ran(Maize Research Center,Beijing Academy of Agriculture and Forestry Sciences/Beijing Key Laboratory of Maize DNA Fingerprinting and Molecular Breeding,Beijing 100097)

机构地区：[1]北京市农林科学院玉米研究中心/玉米DNA指纹及分子育种北京市重点实验室,北京100097

出　　处：《植物遗传资源学报》2021年第4期971-978,共8页Journal of Plant Genetic Resources

基　　金：北京市农林科学院创新能力建设专项(KJCX20180413);内蒙古自治区科技计划项目(2020GG0098);国家玉米良种重大科研联合攻关(111721301354052341,19190496)。

摘　　要：穗粒腐病是玉米主产区普遍发生的穗部真菌性病害,发掘优异的抗性种质资源和选育优良抗病品种,是防治玉米穗粒腐病最为经济有效的措施。本研究采用针刺果穗注射接种法,在北京通州和小汤山两个试验点,对国内外324份玉米自交系种质资源进行禾谷镰孢菌抗性鉴定。综合2个试验点的抗性评价结果,鉴定到了9份禾谷镰孢菌穗粒腐病表现高抗的自交系,分别为OQ603、百黄混、PI 539921、Mo17、PI 406119、F321、X178、B09和PHG39。有48份自交系对禾谷镰孢菌的穗粒腐病抗性,在2个试验点均为抗级以上(包括高抗和抗)。从不同种质类群自交系的抗性分布情况来看,P群种质整体上表现出较强的抗性,Iodent群和X群次之,而在其他类群中抗性分布趋势并不明显。这些自交系的鉴定,丰富了我国玉米穗粒腐病抗性种质资源,也为抗病育种和理论研究奠定了基础。Maize ear rot is a serious fungal disease that destabilizes maize production in the producing areas.Exploration of resistant-conferring germplasm resource and incorporation in maize varieties are the economicalfriendly and effective measure to control this disease.In this study,324 maize germplasm accessions were tested for ear rot resistance in Tongzhou and Xiaotangshan of Beijing by infiltrating Fusarium graminearum into the ear puncture.A positive correlation between resistance severities at the two environments was observed.Nine inbred lines(OQ603,Bai Huang-hun,PI 539921,Mo17,PI 406119,F321,X178,B09 and PHG39)showed highly resistant(HR),while 37 lines showed resistant(R).Based on the outcome of genetic classification,the maize lines from P group were observed showing overall higher resistance,followed by Iodent and X group.No obvious trend on the resistance distribution was detected in other populations.Collectively,this study identified additional germplasm resource that conferred ear rot resistance,and provided materials valuable for disease resistance breeding and theoretical research.

关 键 词：玉米 穗粒腐 禾谷镰孢菌 抗性鉴定 类群 

分 类 号：S435.131.4[农业科学—农业昆虫与害虫防治]