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玉米抗禾谷镰孢菌穗粒腐病种质资源鉴定与评价
苏爱国, 王帅帅, 段赛茹, 张如养, 邢锦丰, 杨扬, 宋伟, 赵久然
0
(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)
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。本文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。相关性分析结果表明,自交系在两个环境下的抗性表现存在正相关。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HR和R)。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提供了重要的抗原材料。
关键词:  玉米  穗粒腐  禾谷镰孢菌  抗性鉴定  类群
DOI:10.13430/j.cnki.jpgr.20210201004
投稿时间:2021-02-01修订日期:2021-03-15
基金项目: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)
Identification and Evaluation for Ear Rot Resistance against Fusarium graminearum in Maize Germplasm
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)
Abstract:
Ear rot is a serious disease of maize caused by fungus in the producing areas. Discover excellent resistant germplasm resources and breeding resistant varieties are the most economical and effective measures to control maize ear rot. In this study, the ear rot resistance of 324 maize germplasm against Fusarium graminearum was identified by the ear puncture injection method in Tongzhou and Xiaotangshan of Beijing. Correlation analysis showed that there was a positive correlation between resistance evaluations in the two environments. According to the comprehensive analysis, 9 inbred lines with high resistance were OQ603, Bai Huang-hun, PI 539921, Mo17, PI 406119, F321, X178, B09 and PHG39, respectively. At the same time, it was found that the resistance of 48 inbred lines was above rated R level (including HR and R) in both breeding site. According to the resistance distribution of maize germplasm in different group, P group showed strong resistance overall, followed by Iodent and X germplasm, while the resistance distribution trend was not obvious in other populations. The identification of these resistant materials enriched the germplasm resources of maize to ear rot in China, and provided important materials for disease resistance breeding and theoretical research.
Key words:  maize  ear rot  Fusarium graminearum  resistance identification  group

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