非洲菊根腐病品种抗病性鉴定及病原菌的致病性分化  

Identification of the Disease Resistance of Gerbera jamesonii Cultivars to Root Rot and Pathogenicity Differentiation of Phytophthora cryptogea

作　　者：李越[1] 刘云龙[1] 李凡[1] 唐小艳[1] 陈精兰[1] 陈海如[1] 

机构地区：[1]云南农业大学,教育部农业生物多样性与病虫害控制重点实验室,云南昆明650201

出　　处：《云南农业大学学报》2008年第1期33-35,41,共4页Journal of Yunnan Agricultural University

基　　金：云南省自然科学基金重点项目(2004C0007Z)

摘　　要：用隐地疫霉(Phytophthora cryptogea)游动孢子浸根接种法对13个非洲菊主栽品种进行了品种抗病性鉴定。结果表明,玲珑表现为高抗品种,年华、金太阳、靓粉为抗病品种,红日、寒王为中抗品种,绿心粉为中感品种,大臣、爱神、红地毯、大雪桔、热带草原为感病品种,白马王子为高感品种;对分离自云南非洲菊主产区的6个隐地疫霉菌株进行了致病性分化测定。结果表明,6个隐地疫霉菌株存在着较明显的致病性分化,菌株的致病性强弱与分离的不同寄主品种关系较大,不同地理来源的菌株致病性强弱差异不明显。Thirteen Gerbera jamesonii cultivars were inoculated with zoospores of Phytophthora cryptogea to identity their disease resistance. The result indicated that the cuhivar of Linglong had the highest resistance to root rot, Nianhua, Jintaiyang, Liangfen, Hongri, Hanwang and Lvxinfen had higher resistance, Dacheng, Aishen, Hongditan, Dxueju and Redaicaoyuan had lower resistance and Baimawangzi had the lowest resistance. The pathogenicity of 6 strains of P. cryptogea was tested by 3 G. jamesonii cultivars, the result indicated that the 6 strains had evident diferentiation on pathogenicity. The pathogenicity was strongly related to host cultivars, but less significantly related to their geographic origin.

关 键 词：非洲菊根腐病 隐地疫霉 抗病性鉴定 致病性分化 

分 类 号：S436.85[农业科学—农业昆虫与害虫防治]