CAJ | 학술논문

采用室内苗期鉴定、大田人工接种鉴定和Pm4b分子标记对黄淮麦区的98个小麦品种(系)进行了白粉病抗性分析。苗期鉴定结果表明,被测品种中,抗病品种5个,占参试品种的5%。田间接种鉴定发现,抗病品种39个,占参试品种的39%。分子标记检测发现,98份供试材料中有3份样品检测到Pm4b基因的标记片段,占供试材料的3%。苗期感病而在成株期表现中等抗病有可能是慢病性品种,是一种更有利用前途的抗病种质。
채용실내묘기감정、대전인공접충감정화Pm4b분자표기대황회맥구적98개소맥품충(계)진행료백분병항성분석。묘기감정결과표명,피측품충중,항병품충5개,점삼시품충적5%。전간접충감정발현,항병품충39개,점삼시품충적39%。분자표기검측발현,98빈공시재료중유3빈양품검측도Pm4b기인적표기편단,점공시재료적3%。묘기감병이재성주기표현중등항병유가능시만병성품충,시일충경유이용전도적항병충질。
In this study,the resistance to powdery mildew of 98 wheat varieties ( lines) of Huanghuai wheat growth area was analyzed using seedling identification,artificial inoculation identification in the field and molecular marker analysis of Pm4b. There only 5% tested varieties had resistance to powdery mildew by seedling stage identi-fication. Field inoculation found 39 resistant varieties,accounting for 39% of the tested varieties. There were 3 sam-ples,accounting for 3% of the tested materials,detected the gene marker fragment of Pm4b by molecular markers detected. These varieties which were susceptible in the seeding but disease-resistant in the adult stage were potential adult-plant resistance variety which was more promising in future disease-resistant breeding. This study provides an important basis for powdery mildew resistance breeding of wheat.