南方农业学报2012，Vol.43Issue(10)：1490-1494,5.DOI:10.3969/j.issn.2095-1191.2012.10.1490
西甜瓜蔓枯病菌致病力测定与品种抗病性分析
Determination on virulence of stem blight (Didymella bryoniae)strains to watermelon and melon and their resistance analysis
摘要
Abstract
The present study was conducted to discover the differences in virulence of different Didymella bryoniae strains to watermelon and melon and their resistance to stem blight in order to provide references on watermelon and melon productions. [ Method ]Detached leaves inoculation were used as test materials to study the virulence oi 104 strains of Didymella bryoniae to watermelon and melon, and the disease resistance of 14 watermelon and melon varieties was determined. [ Result]Different Didymella bryoniae strains had different virulence to the same watermelon and melon variety. The strong, moderate, and weak virulence strains accounted for 31.73, 57.69, and 10.58% out of the 104 strains of Didymella bryoniae, respectively. Different watermelon and melon varieties produced obviously different disease resistance to the same strain. The disease indexes of strong virulence strain WTMK-76 ranged from 38.14 to 86.92, while that of moderate virulence strain BHMK-59 were 26.88-76.40. Amongst the 10 watermelon varieties, Lumeiren presented the strongest resistance, followed by Heimeiren; and amongst the 4 melon varieties, Guangmi 1 showed the strongest resistance. [Conclusion]Different Didymella bryoniae strains produce different virulences to watermelon and melon varieties, and there were no correlations between the strain virulence with geographical origin. The resistance of different watermelon and melon varieties were also different trom Didymella bryoniae. Exhibiting the strongest resistance, Lumeiren, Heimeiren, and Guangmi 1 could be widely introduced and planted in Guangxi.关键词
西瓜/甜瓜/蔓枯病菌/致病力/抗病性Key words
watermelon/ melon/ Didymella bryoniae/ virulence/ resistance分类
农业科技引用本文复制引用
胡凤云,莫贱友,郭堂勋,潘朝勃,黄穗萍,韦继光..西甜瓜蔓枯病菌致病力测定与品种抗病性分析[J].南方农业学报,2012,43(10):1490-1494,5.基金项目
广西研究生教育创新计划项目(T32611) （T32611）
南宁市科技计划项目(201003035B) （201003035B）
南宁市青秀区科技计划项目(2010N25,20090211B) （2010N25,20090211B）
