QTL mapping of adult-plant resistance to leaf and stripe rust in wheat cross L224-3/Zhengzhou5389

s Wheat leaf rust and stripe rust are important diseases worldwide. Breeding resistant cultivars is an effective means to control wheat leaf and stripe rust. Wheat line L224-3 currently has high resistance to wheat leaf and stripe rust at the field. In this study, 166 recombinant inbred lines (RILs)...

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Bibliographic Details
Published in:Euphytica 2023-10, Vol.219 (10), p.105, Article 105
Main Authors: Zhou, Yue, Gao, Pu, Miao, Xiao-yan, Gebrewahid, Takele-Weldu, Jiao, Yue, Zhang, Pei-pei, Cao, Liu-qing, Zhang, Xin-le, Li, Zai-feng
Format: Article
Language:English
Subjects:
Biomedical and Life Sciences
Biotechnology
Chromosomes
Cultivars
Gene mapping
High resistance
Inbreeding
Leaf rust
Leaves
Life Sciences
Mapping
Marker-assisted selection
Plant breeding
Plant Genetics and Genomics
Plant Pathology
Plant Physiology
Plant resistance
Plant Sciences
Quantitative trait loci
Single-nucleotide polymorphism
Stripe rust
Wheat
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Summary:s Wheat leaf rust and stripe rust are important diseases worldwide. Breeding resistant cultivars is an effective means to control wheat leaf and stripe rust. Wheat line L224-3 currently has high resistance to wheat leaf and stripe rust at the field. In this study, 166 recombinant inbred lines (RILs) derived from the L224-3 × Zhengzhou 5389 cross were used to map quantitative trait locus (QTL) for leaf and stripe rust resistance. The RILs and two parents were phenotyped for leaf rust severity at Baoding in Hebei province and Zhoukou in Henan province in the 2015/2016 and 2016/2017 cropping seasons, and for stripe rust severity at Baoding in Hebei Province and Mianyang in Sichuan Province in the 2015/2016 and 2016/2017 growth seasons. All the RILs and parents were also genotyped with the 660 K SNP array and simple sequence repeat (SSR) markers to screen for potential polymorphic markers associated with rust resistance. Four QTLs on chromosomes 1A, 2A, 4B and 7B, were detected using inclusive composite interval mapping (IciMapping). QLr.hbau-1A / QYr.hbau-1A , derived from susceptible parent Zhengzhou 5389, was pleiotropic for both leaf rust and stripe rust resistance and maybe a novel QTL. The second QTL, QLr.hbau-2A / QYr.hbau-2A derived from L224-3 for leaf rust and stripe rust resistance is possibly Lr37 / Yr17 . QLr.hbau-4B / QYr.hbau-4B might be a new locus for leaf rust and stripe rust resistance. The fourth QTL, QYr.hbau-7B is possibly a new QTL. The QTL identified in the present study with their flanking markers might be used for candidate gene mining and marker-assisted selection (MAS) in wheat breeding programs for rust resistance.
ISSN:0014-2336
1573-5060
DOI:10.1007/s10681-023-03236-8