摘要
为有效地保存抗病种质资源,对主栽的芋头品系进行疫病的抗病性鉴定及遗传多样性分析。从我国南方4个芋头产区收集60多个芋头品系,采用改进的疫霉菌抗病性鉴定方法,经过2 a的抗性鉴定,从中鉴定出6个抗病品系,9个中抗品系。选取全部的抗病品系及分别代表不同地区的感病品系37个,用SSR进行遗传多样性分析。聚类分析结果表明,芋头品系可分为5个类群。15个抗病品系分属不同类群,野生芋和食叶芋属于第5类群,与其它类群的亲缘关系较远。
Resistance identification of taro to Phytophthora colocasiae and analysis of genetic diversity of taro were conducted in order to preserve resistant taro effectively.More than 60 taro accessions were collected from the southern region,a method was developed to identify the resistance of the taro accessions,6 resistance accessions and 9 moderate resistance accessions were identified after 2 year trials.The genetic diversity of 37 accessions including all the resistance accessions and other susceptible accessions from different districts was analyzed by SSR.The selected taro accessions could be clustered into 5 groups.The 15 resistant taro accessions belonged to different groups.The resistance wild taro and leafy taro belonged to the fifth group which was distantly related with other groups.
出处
《广东海洋大学学报》
CAS
2012年第4期67-72,共6页
Journal of Guangdong Ocean University
基金
<水生蔬菜主要病虫害无害化综合防控技术研究>公益性行业(农业)科研专项经费子课题分项目(200903017-08)
关键词
芋头
疫病
遗传多样性
抗病性鉴定
Colocasia esculent
Phytophthora colocasiae
genetic diversity
resistance identification
