中国农业科学 ›› 2026, Vol. 59 ›› Issue (13): 2763-2775.doi: 10.3864/j.issn.0578-1752.2026.13.001

• 作物遗传育种·种质资源·分子遗传学 • 上一篇    下一篇

江苏小麦品种的抗病基因分子检测

谭亚宁1(), 张保龙1,2, 曹爱忠2,3, 任润生1,2()   

  1. 1 江苏省农业科学院种质资源与生物技术研究所, 南京 210014
    2 生物育种钟山实验室, 南京 210014
    3 南京农业大学农学院/作物遗传与种质创新利用全国重点实验室, 南京 210014
  • 收稿日期:2025-12-12 接受日期:2026-03-11 出版日期:2026-07-01 发布日期:2026-07-01
  • 通信作者:
    任润生,E-mail:
  • 联系方式: 谭亚宁,E-mail:1397950241@qq.com。
  • 基金资助:
    作物遗传与种质创新利用全国重点实验室开放课题基金项目(ZW202405)

Molecular Detection of Disease Resistance Genes in Wheat Varieties Approved in Jiangsu Province

TAN YaNing1(), ZHANG BaoLong1,2, CAO AiZhong2,3, REN RunSheng1,2()   

  1. 1 Institute of Germplasm Resources and Biotechnology, Jiangsu Academy of Agricultural Sciences, Nanjing 210014
    2 Zhongshan Biological Breeding Laboratory, Nanjing 210014
    3 College of Agronomy, Nanjing Agricultural University/State Key Laboratory of Crop Genetics & Germplasm Enhancement and Application, Nanjing 210014
  • Received:2025-12-12 Accepted:2026-03-11 Published:2026-07-01 Online:2026-07-01

摘要:

【目的】小麦是我国重要的粮食作物,其安全生产直接关系国家粮食安全。江苏省作为我国东部主要小麦产区,气候湿润、病害发生频繁,赤霉病、条锈病和白粉病是影响该地区小麦生产的主要病害,常导致严重的产量与品质损失。选育和推广多抗品种是防控病害最经济有效的途径。系统评估江苏省近十年来审定小麦品种对上述3种病害的综合抗性水平,并通过分子标记检测,明确其抗病基因的分布与聚合情况,为该地区抗病育种提供科学依据和优良亲本材料。【方法】基于2014—2023年江苏省品种审定数据,对185个小麦品种进行赤霉病、条锈病和白粉病抗性统计分析,筛选出至少对2种病害表现抗性的“兼抗”品种。进一步从49份兼抗品种中选取44份材料,利用特异性分子标记检测抗赤霉病基因Fhb1、抗白粉病基因Pm21,以及抗条锈病基因Yr5Yr9Yr15Yr17Yr18Yr26Yr30,并分析其分布与组合特征。【结果】根据审定数据,供试品种中分别有53.52%、43.92%和9.72%对赤霉病、条锈病和白粉病表现抗性。筛选出5个对3种病害均抗的广谱抗病品种(宁红麦618、盐麦1902、中研麦238、盐麦1903和宁麦资166)及49个兼抗2种病害的品种。分子检测显示,44份兼抗材料均携带多个抗病基因,Pm21Yr5Yr17Yr18Yr26的检出率为100%,Fhb1为84.1%,Yr15Yr30分别达93.2%和88.6%,Yr9仅检出3份。其中,徐麦DH9和徐麦100聚合了全部9个测试基因,表现出优异的抗病遗传潜力,可作为多抗育种的理想亲本。【结论】证实了江苏审定小麦品种拥有丰富且独特的优质抗病基因资源,具有较高的育种利用潜力。其潜在的抗病基因库尚未完全开发。基于本研究筛选出的兼抗小麦品种资源,可作为后备种质库。

关键词: 小麦, 审定品种, 抗性分析, 抗病基因, 赤霉病, 条锈病, 白粉病

Abstract:

【Objective】Wheat is a crucial food crop in China, and its production security is closely tied to national food security. Jiangsu Province, a major wheat-producing region in eastern China, frequently suffers from diseases outbreaks due to its humid climate. Fusarium head blight (FHB), Stripe rust, and Powdery mildew are the primary diseases causing severe yield losses and quality degradation. Breeding and deploying multi-resistant varieties are the most economical and effective strategy for disease control. This study aimed to evaluate the comprehensive resistance of wheat varieties approved in Jiangsu over the past decade to these three diseases and to clarify the distribution and pyramiding of corresponding resistance genes using molecular markers, thereby providing a scientific basis and elite parental materials for disease resistance breeding in the region.【Method】Based on the approval data of 185 wheat varieties released in Jiangsu from 2014 to 2023, statistical analyses were conducted on their resistance levels to FHB, Stripe rust, and Powdery mildew. Varieties exhibiting resistance to at least two of these diseases were identified as “multi-resistant”. From 49 multi-resistant varieties, 44 germplasm accessions were selected for molecular detection. Specific markers were used to detect the FHB resistance gene Fhb1, the Powdery mildew resistance gene Pm21, and the Stripe rust resistance genes Yr5, Yr9, Yr15, Yr17, Yr18, Yr26, and Yr30. Experimental procedures included genomic DNA extraction using the CTAB method, optimized PCR systems and protocols, and the inclusion of known positive controls to ensure detection accuracy.【Result】According to the approval data, 53.52%, 43.92%, and 9.72% of the tested varieties showed resistance to Fusarium head blight, Stripe rust, and Powdery mildew, respectively. Five varieties (Ninghongmai 618, Yanmai 1902, Zhongyanmai 238, Yanmai 1903, and Ningmaizi 166) demonstrated resistance to all three diseases, and 49 varieties were resistant to at least two. Molecular marker detection indicated that all 44 multi-resistant accessions carried multiple resistance genes. Pm21, Yr5, Yr17, Yr18, and Yr26 were detected in all materials. Fhb1 was present in 84.1% of accessions, Yr15 in 93.2%, and Yr30 in 88.6%, while Yr9 was found in only three accessions. Notably, the varieties Xumai DH9 and Xumai 100 carried all nine tested resistance genes, demonstrating outstanding genetic potential for disease resistance and highlighting their suitability as ideal parental lines for multi-resistance breeding.【Conclusion】This study confirmed that the approved wheat varieties in Jiangsu Province have rich and unique gene resources for disease resistance through systematic molecular detection. It shows that the wheat varieties approved in Jiangsu province have high breeding and utilization potential. Their potential disease-resistant gene pool has not been fully developed. Based on this study, the screened wheat varieties can serve as a reserve germplasm bank, providing strong genetic support for future multi-resistance breeding in Jiangsu and East China, and alleviating the current challenge of limited sources of disease-resistant varieties.

Key words: wheat, approved varieties, disease resistance analysis, disease resistance gene, gibberellic disease, Stripe rust, Powdery mildew