Fourteen strains of Fusarium oxysporum f.sp.cubense were induced to produce 146 nitrate-nonutilizing(nit) mutants on a chlorate-containing medium.Among them,there were 117 nit1 mutants(80.14%),17 nit3 mutants(11.64%) ...Fourteen strains of Fusarium oxysporum f.sp.cubense were induced to produce 146 nitrate-nonutilizing(nit) mutants on a chlorate-containing medium.Among them,there were 117 nit1 mutants(80.14%),17 nit3 mutants(11.64%) and 12 nitM mutants(8.22%).These strains were divided into two vegetative compatibility groups(VCGs) by the vegetative compatibility tests.Twelve strains of F.oxysporum f.sp.cubense from Musa AAA belonged to VCG1,two trains from Musa ABB belonged to VCG2.展开更多
为了探明影响水稻纹枯病菌营养体亲和性分化的因子,将水稻纹枯病菌菌株cx-2在不同水稻品种继代接种,并在含不同杀菌剂、具不同p H及不同温度条件的PDA平板上继代培养,用对峙法测定继代菌株与原始接种菌株的营养体亲和性。此外,对营养体...为了探明影响水稻纹枯病菌营养体亲和性分化的因子,将水稻纹枯病菌菌株cx-2在不同水稻品种继代接种,并在含不同杀菌剂、具不同p H及不同温度条件的PDA平板上继代培养,用对峙法测定继代菌株与原始接种菌株的营养体亲和性。此外,对营养体亲和性分化菌株与原始菌株的AFLP指纹图谱进行比较。结果显示,在供试的30个水稻品种上连续接种4次后,从9个水稻品种中分离出与原始菌株营养体不亲和的菌株。菌株在不同p H值的PDA平板继代培养4次后,在p H偏碱性端(p H 10、p H 11)开始出现营养体亲和性分化的菌株。在不同农药和温度条件下继代培养10次的菌株中没有分离到营养体亲和性分化的菌株。营养体亲和性分化菌株与原始菌株的AFLP指纹图谱没有差异。展开更多
文摘Fourteen strains of Fusarium oxysporum f.sp.cubense were induced to produce 146 nitrate-nonutilizing(nit) mutants on a chlorate-containing medium.Among them,there were 117 nit1 mutants(80.14%),17 nit3 mutants(11.64%) and 12 nitM mutants(8.22%).These strains were divided into two vegetative compatibility groups(VCGs) by the vegetative compatibility tests.Twelve strains of F.oxysporum f.sp.cubense from Musa AAA belonged to VCG1,two trains from Musa ABB belonged to VCG2.
文摘为了探明影响水稻纹枯病菌营养体亲和性分化的因子,将水稻纹枯病菌菌株cx-2在不同水稻品种继代接种,并在含不同杀菌剂、具不同p H及不同温度条件的PDA平板上继代培养,用对峙法测定继代菌株与原始接种菌株的营养体亲和性。此外,对营养体亲和性分化菌株与原始菌株的AFLP指纹图谱进行比较。结果显示,在供试的30个水稻品种上连续接种4次后,从9个水稻品种中分离出与原始菌株营养体不亲和的菌株。菌株在不同p H值的PDA平板继代培养4次后,在p H偏碱性端(p H 10、p H 11)开始出现营养体亲和性分化的菌株。在不同农药和温度条件下继代培养10次的菌株中没有分离到营养体亲和性分化的菌株。营养体亲和性分化菌株与原始菌株的AFLP指纹图谱没有差异。