利用氯酸钾毒性,诱变棉花枯萎病菌产生硝酸盐利用缺陷型突变体(nit)。在485个 nit 突变体中,生理表现型以 nit A 为最多,nit B 和 nit C 次之,nit D 极少。不同生理表现型之间的互补关系复杂。对107个菌株的突变体间进行营养体亲和性测...利用氯酸钾毒性,诱变棉花枯萎病菌产生硝酸盐利用缺陷型突变体(nit)。在485个 nit 突变体中,生理表现型以 nit A 为最多,nit B 和 nit C 次之,nit D 极少。不同生理表现型之间的互补关系复杂。对107个菌株的突变体间进行营养体亲和性测定的结果表明,95个菌株属于同一个营养体亲和群 VCG_1,6个菌株属于VCG_2,另有2个菌株为单菌株亲和群。展开更多
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,6...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.展开更多
文摘利用氯酸钾毒性,诱变棉花枯萎病菌产生硝酸盐利用缺陷型突变体(nit)。在485个 nit 突变体中,生理表现型以 nit A 为最多,nit B 和 nit C 次之,nit D 极少。不同生理表现型之间的互补关系复杂。对107个菌株的突变体间进行营养体亲和性测定的结果表明,95个菌株属于同一个营养体亲和群 VCG_1,6个菌株属于VCG_2,另有2个菌株为单菌株亲和群。
文摘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.