不同辣椒种质对象耳豆根结线虫的抗性评价  

Evaluation of Resistance to Meloidogyne enterolobii in Different Capsicum Pepper Germplasms

作　　者：姜秉政 陈莉菁 苗悦 凌鹏 谢尚潜 刘子记[3] 曹振木[3] 朱婕[1,2] Jiang Bingzheng;Chen Lijing;Miao Yue;Ling Peng;Xie Shangqian;Liu Ziji;Cao Zhenmu;Zhu Jie(College of Horticulture,Hainan University,Haikou,570228;Key Laboratory of Genetics and Germplasm Innovation of Tropical Special Forest Trees and Ornamental Plants,Hainan University,Ministry of Education,Haikou,570228;Tropical Crops Genetic Resources Institute,Chinese Academy of Tropical Agricultural Sciences,Haikou,571101)

机构地区：[1]海南大学园艺学院,海口570228 [2]海南大学,热带特色林木花卉遗传与种质创新教育部重点实验室,海口570228 [3]中国热带农业科学院热带作物品种资源研究所,海口571101

出　　处：《分子植物育种》2021年第22期7649-7656,共8页Molecular Plant Breeding

基　　金：国家自然科学基金地区科学项目(31760574);海南省普通高等学校研究生创新科研课题项目(Hys2020-240)。

摘　　要：近年来象耳豆根结线虫的危害日益严重。为筛选抗象耳豆根结线虫的辣椒种质,本试验利用种属特异性引物对根结线虫病原物开展分子鉴定,确定为象耳豆根结线虫。接着采用室内人工接种法,对10份一年生辣椒种质和10份中国辣椒种质进行象耳豆根结线虫抗性鉴定,计算根结指数和卵粒指数,并通过比较隶属函数,发现其中3份辣椒种质对象耳豆根结线虫表现为高抗,抗病性最强的是L518M和L525-1M,L42M次之;10份表现为中抗;7份表现为感病,抗病能力最弱的是L69-1M;未发现免疫品种。本研究发现中国辣椒种质的抗病性整体高于一年生辣椒,是重要的抗病种质来源,可用于象耳豆根结线虫抗病育种和后续抗病机理的研究。In recent years,Meloidogyne enterolobii is making increasing devastation in the field.In order to elect the capsicum germplasms resistant to Meloidogyne enterolobii,molecular identification was carried out first with species specific primers of the nematode pathogen to make sure it was Meloidogyne enterolobii.Then artificial inoculation was carried out in greenhouse to evaluate the resistance of ten Capsicum annuum and ten Capsicum chinense germplasm to Meloidogyne enterolobii.Then gall index and egg mass index were calculated.By calculating the membership function,three germplasms were highly resistant,with L518 M and L525-1 M as the most resistant and L42 M as the third resistant one;ten were semi-resistant and seven were susceptible to Meloidogyne enterolobii,with L69-1 M as the most susceptible germplasm.No immune one was found.Furthermore,Capsicum chinense was generally more resistant than Capsicum annuum in this study.It was indicated that Capsicum chinense could be taken as an important germplasm resource of Meloidogyne enterolobii resistance,which lays a foundation for the future nematode resistance breeding and research work on disease resistance mechanism.

关 键 词：中国辣椒(Capsicum chinense) 一年生辣椒(Capsicum annuum) 象耳豆根结线虫(Meloidogyne enterolobii) 抗性评价 

分 类 号：S436.418[农业科学—农业昆虫与害虫防治]