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Resistance of slow mildewing genes to stripe rust and leaf rust in common wheat

Creator: Jindong Liu
Creator: Xinmin Chen
Creator: He Zhonghu
Creator: Ling Wu
Creator: Bin Bai
Creator: Zaifeng Li
Creator: Xia Xian-Chun
Year: 2014
URI: https://hdl.handle.net/10883/21448
Language: English
Publisher: Science Press
Copyright: CIMMYT manages Intellectual Assets as International Public Goods. The user is free to download, print, store and share this work. In case you want to translate or create any other derivative work and share or distribute such translation/derivative work, please contact CIMMYT-Knowledge-Center@cgiar.org indicating the work you want to use and the kind of use you intend; CIMMYT will contact you with the suitable license for that purpose.
Type: Article
Place of Publication: Beijing (China)
Pages: 1157-1564
Issue: 9
Volume: 40
DOI: 10.3724/SP.J.1006.2014.01557
Keywords: Slow Mildewing and Slow Rusting Resistance
Keywords: Durable Resistance
Keywords: Gene Pyramiding
Keywords: QTL
Description: Pyramiding quantitative trait loci (QTLs) is an effective method to improve resistance to powdery mildew, stripe rust, and leaf rust in common wheat. We have developed 21 lines (F6) carrying 2-5 slow mildewing QTLs by crossing slow powdery mildew cultivars Bainong 64 and Lumai 21 possessing four and three slow mildewing QTLs, respectively. These F6 lines were evaluated in the field in Pianxian, Sichuan and Tianshui, Gansu for stripe rust resistance and in Baoding, Hebei and Zhoukou, Henan for leaf rust resistance during the 2012-2013 cropping season. According to the maximum disease severities (MDS) and the area under the disease progress curve (AUDPC), QTLs QPm.caas-4DL, QPm.caas-6BS, and QPm.caas-2BL were highly resistant to stripe rust (P < 0.01), which explained 16.9%, 14.1%, and 17.3% of phenotypic variance, respectively. Locus QPm.caas-4DL also showed high resistance to leaf rust (P < 0.01) with phenotypic contribution of 35.3%. Lines that pyramided five (QPm.caas-1A/QPm.caas-4DL/QPm.caas-2DL/QPm.caas-2BS/QPm.caas-2BL) and four (QPm.caas-1A/QPm.caas-4DL/QPm. caas-2BS/QPm.caas-2BL) QTLs exhibited higher resistance to both stripe and leaf rust compared with their parents. This result indicates that the combination of QPm.caas-4DL (from Bainong 64), QPm.caas-2BS and QPm.caas-2BL (Lumai 21) has a marked effect on improving adult resistance to powdery mildew, stripe rust and leaf rust, and the more QTLs are pyramided, the stronger slow disease resistance can be achieved. In breeding practice, the combination of 4-5 slow mildewing or rusting QTLs can result in durable resistance to multiple diseases.
Agrovoc: TRITICUM AESTIVUM
Agrovoc: RUSTS
Agrovoc: MILDEWS
Agrovoc: GENES
Agrovoc: DISEASE RESISTANCE
Agrovoc: QUANTITATIVE TRAIT LOCI
ISSN: 0496-3490
Journal: Acta Agronomica Sinica


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  • Wheat
    Wheat - breeding, phytopathology, physiology, quality, biotech

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