香荚兰尖孢镰刀菌营养体亲和性测定的初步研究  

Tests on vegetative compatibility of Fusarium oxysporum f. sp. vanillae

作　　者：孔琼[1,2] 袁盛勇[3] 朱有勇[2] 王云月[2] 

机构地区：[1]红河学院生物系,蒙自661100 [2]云南农业大学植物保护学院,昆明650201 [3]红河学院农学系,蒙自661100

出　　处：《植物病理学报》2008年第6期645-648,共4页Acta Phytopathologica Sinica

基　　金：云南省重点基金项目(97C005Z)

摘　　要：Eight hundred twenty four nit mutants were induced from 73 strains of Fusarium oxysporum f.sp.vanillae,and classified into four phenotypes by their abilities to utilize different nitrogen sources.Among these mutants,64.9% were characterized as nit 1,24.3% as nit 3,9.8% as nit M,1.0% as nit X.Based on complementary pairing tests of different nit mutants on the medium MM,44 isolates belonged to 8 different VCGs,29 isolates were classified into single and different VCGs.These results indicated that there was signi-ficant VCG diversity in Fusarium oxysporum f.sp.vanillae population.VCGs might be correlated with geographic origin of strains,but no close correlation was found between VCGs and pathogenicity.Eight hundred twenty four nit mutants were induced from 73 strains of Fusarium oxysporum f. sp. vanillae, and classified into four phenotypes by their abilities to utilize different nitrogen sources. Among these mutants, 64.9% were characterized as nit 1, 24.3% as nit 3, 9.8% as nit M, 1.0% as nit X. Based on complementary pairing tests of different nit mutants on the medium MM, 44 isolates belonged to 8 different VCGs, 29 isolates were classified into single and different VCGs. These results indicated that there was significant VCG diversity in Fusarium oxysporum f. sp. vanillae population. VCGs might be correlated with geographic origin of strains, but no close correlation was found between VCGs and pathogenicity.

关 键 词：尖孢镰刀菌 营养体亲和性 测定分析 香荚兰 营养体亲和群 产业化发展 生理分化 地理分布 

分 类 号：S436.8[农业科学—农业昆虫与害虫防治] S435.621.2[农业科学—植物保护]