【摘要】 用4个具有不同毒力的小麦白粉菌生理小种，分别接种贵在21与5个抗感不同白粉菌小种的品种杂交的F1、F2和部分组合的BC1F1，群体的幼苗离体叶段，定单株编号和统计，初步鉴定出贵农21具有2对独立的显性抗病基因，其中1对只抗1和11号小种，与P38携带的抗1和11小种的基因相同；另1对还抗311和313号小种，与P38携带的另1对基因不同。更多还原

【Abstract】 The detached leaves of F1 F2 and BC1F1 seedlings of crosses involving GuiNong 21and five different resistance cultivars of wheatwere inoculated with four races of Blumeria graminis f. sp. tritici collected from Guizhou. The results demonstrated that Guinong21 had two dominant resistance genes. One was resistant to races 1 and 11, this gene was identical to the resistance gene in P38;the other was resistant to races 311 and 313, this gene was different from the resistance gene in P38.更多还原