普通小麦山红麦白粉病成株抗性遗传分析

打开文本图片集

中图分类号：S512 文献标志码：A 文章编号：1671-4652（2026）01-0031-07

DOI：10.16872/j.cnki.1671-4652.2026.01.004

Genetic analysis of adult plant resistance to powdery mildew in common wheat Shanhongmai

WU Xujiang 1，2 ，WANG Junchan1，WU Di1，JIANG Wei1 ， WANG Hui1 ，WAN Wentao1，LIU Datong

（1. Lixiahe Institute of Agriculture Sciences/ Key Laboratory of Wheat Biology and Genetic Improvement for Low & Middle Yangtze Valley，Ministry of Agriculture and Rural Affairs，Yangzhou 2250o7，China；2. Zhongshan Biological Breeding Laboratory，Nanjing 21ool4，China）

ABSTRACT：Powdery mildew is one of the most destructive wheat diseases worldwide，seriously threatening the crop yield andquality.The useof resistant wheatcultivars is the most efective and sustainable approach to control the disease.Identifyingandusing resistantlocis essential for maintaining durable powdery mildew resistance.Shanhongmai is a wheatlandrace in China，which shows typical adult-plant resistance to powdery mildew.To understand the genetic basis of theresistance，a dihaploid（DH） population of 224lines was developed from the crossbetween Shanhongmai and susceptible cultivar Yangmail5.A 55K SNPchip was used to genotype the DH population，anda totalof7716 polymorphic SNPs was mapped onto 21 linkage chromosomes，representing all21 wheat chromosomes，with a total genetic distance of （20 4 119. 515cm . QTL analysis was performed with IciMapping 4.1 based on the genotypic data and three years of powdery mildew phenotypic data，and three loci，conferring adult plant resistance from Shanhongmai on chromosome arms 4BL and 7AL （two QTL），named QPm. jaas-4BQPm. jaas-7A-1 and QPm. jaas-7A-2 and one locus from Yangmail5 on chromosome 5BS，named QPm. jaas .5B ，were identified. Those QTL can explain the disease severity variation from 7.8% to 10.3%This studycan provide important references for identifying and cloning novel powdery mildew resistance genes，develo ping corresponding molecular markers for breeding asisted selection，and enhancing resistance to wheat powdery mildew.

KEY WORDS： wheat; powdery mildew; adult plant resistance; quantitative trait loci; genetic analysis

小麦作为世界重要的粮食作物，全球约有 40% 的人口以其为主要口粮。（剩余9116字）