不同甜瓜品种蔓枯病抗性与抗坏血酸过氧化物酶基因表达的关系  

Relationship between the resistance to gummy stem blight in the different varieties of melon and the transcript profile of ascorbate peroxidase gene

作　　者：任海英 李岗[2] 方丽[1] 茹水江[1] 王汉荣[1] 

机构地区：[1]浙江省农业科学院植物保护与微生物研究所,杭州310021 [2]浙江省植物有害生物防控重点实验室——省部共建国家重点实验室培育基地,浙江省农业科学院农产品质量标准研究所,杭州310021

出　　处：《植物病理学报》2012年第3期306-310,共5页Acta Phytopathologica Sinica

基　　金：浙江省科技计划项目重点农业项目优先主题(2008C12003-3);浙江省自然科学基金项目(Y307046);中国西甜瓜产业技术体系项目;浙江省农业科学院创新提升工程以及国际合作项目

摘　　要：蔓枯病是威胁甜瓜最重要的病害之一,该病是由西瓜壳二孢菌（Ascochyta citrullina Smith,无性世代是泄根亚隔孢壳Didymella bryoniae）引起的,在甜瓜的幼苗期至采收期均可发生。在中国厚皮甜瓜栽培品种中尚未发现蔓枯病抗性较好且综合性状优良的品种,多数甜瓜抗蔓枯病材料均为薄皮小果,关于甜瓜与蔓枯病菌的互作机理目前报道较少,厚皮甜瓜和薄皮甜瓜与蔓枯病.Ascorbate peroxidase gene （APX） plays important roles when plants are in stresses, low temperature and high humidity make it easy that melon are invaded by stem blight disease pathogen Didymella bryoniae. The resistances of melon of 13 varieties to the disease were valued and APX relative expression levels after the inoculation with D. bryoniae strain DB11 were analysed by real time RT-PCR. Eleven varieties with pellicle were resistant to the disease, and 2 thick-skinned ones were high sensitive. It indicated that APX might play roles in the melon resistance to stem blight disease, and the roles in different varieties were not the same.

关 键 词：甜瓜品种 蔓枯病菌 抗坏血酸过氧化物酶 基因表达 抗性 厚皮甜瓜 Smith 无性世代 

分 类 号：S652[农业科学—果树学]