我国花生白绢病菌致病力差异  

Pathogenicity variation of Sclerotium rolfsii strains affecting peanut in China

作　　者：宋万朵 晏立英[1] 于东洋 康彦平[1] 陈玉宁[1] 淮东欣[1] 王志慧[1] 王欣 罗怀勇[1] 雷永[1] 廖伯寿[1] SONG Wan-duo;YAN Li-ying;YU Dong-yang;KANG Yan-ping;CHEN Yu-ning;HUAI Dong-xin;WANG Zhi-hui;WANG Xin;LUO Huai-yong;LEI Yong;LIAO Bo-shou(Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences/Key Laboratory of Biology and Genetics Improvement of Oil crops,Ministry of Agriculture and Rural Affairs,Wuhan 430062,China)

机构地区：[1]中国农业科学院油料作物研究所,农业农村部油料作物生物学与遗传育种重点实验室,湖北武汉430062

出　　处：《中国油料作物学报》2023年第4期845-854,共10页Chinese Journal of Oil Crop Sciences

基　　金：中央级科研院所基本科研业务费专项(2021-2060302-061-019);财政部和农业农村部国家农业产业技术体系(CARS-13)。

摘　　要：为了解我国花生白绢病病原菌株的致病力差异,本文对分离自不同地域的39个代表菌株进行了田间、室内(离体主茎、侧枝和叶片)接种试验,结果表明所有菌株均对花生具有致病性,但致病力存在显著差异。田间接种花生植株与室内接种离体主茎、侧枝和叶片的病情指数呈显著正相关,同一菌丝融合群的菌株对花生的致病力存在差异。所揭示致病力差异,为花生白绢病的防控、品种合理布局提供了理论基础和技术支持。In order to explore the pathogenicity variation of Sclerotium rolfsii affecting peanut,39 strains col-lected from different geographical locations were tested on peanut plants(cut stems and branches,and detached leaves).The results showed that all the S.rolfsii strains were pathogenic on peanut plants,but they displayed a sig-nificant difference in disease index.Their disease indices in fields were significantly correlated with those of cut stems,branches and detached leaves tested in greenhouse.The strains within the same MCGs(mycelial compatibili-ty groups)exhibited pathogenicity variation both in field and in greenhouse.The revealed variation of pathogenicity of S.rolfsii could provide theoretical and technical basis for management of peanut stem rot disease and cultivar dis-tribution.

关 键 词：花生 白绢病 白绢病菌(Sclerotium rolfsii) 致病力 

分 类 号：S565.2[农业科学—作物学]