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ORIGINAL RESEARCH article

Front. Plant Sci.
Sec. Plant Breeding
Volume 15 - 2024 | doi: 10.3389/fpls.2024.1510487

Identifcation and fine mapping of qHSW1, a major QTL for hundred-seed weight in mungbean

Provisionally accepted
Xuesong Han Xuesong Han 1*Long Zhao Long Zhao 2Juan Yu Juan Yu 2Xingmin Wang Xingmin Wang 1Shilong Zhang Shilong Zhang 2Li Li Li Li 1Changyan Liu Changyan Liu 1
  • 1 Institute of food crops,Hubei academy of agricultural sciences, Wu Han, China
  • 2 Bijie Academy of Agricultural Sciences, Bijie, China

The final, formatted version of the article will be published soon.

    Mung bean, an important economic crop, is considered a crop with relatively high levels of plant protein constituents and is consumed as both a vegetable and a grain. Among various yield-related traits, hundred-seed weight (HSW) is crucial in determining mung bean production. This study employed a recombinant inbred line (RIL) population of 200 lines that were genotyped via whole-genome resequencing to exploit genetic potential in the identification of HSW-associated quantitative trait loci (QTLs) across four environments. We identified 5 QTLs for HSW, each explaining 2.46-26.15% of the phenotypic variance. Among these, qHSW1 was mapped on chromosome 1 in all four environments, explaining 16.65-26.15% of the phenotypic variation. Fine mapping and map-based cloning procedures, along with progeny testing of recombinants, aided in narrowing the candidate interval for qHSW1 to 506 kb. This identification of the qHSW1 genomic interval and closely linked markers to qHSW1 could prove valuable in breeding efforts for improved mung bean cultivars with higher seed weight.

    Keywords: fine mapping, mungbean, Hundred-seed weight, QTL, RIL population, Whole-genome resequencing

    Received: 13 Oct 2024; Accepted: 24 Dec 2024.

    Copyright: © 2024 Han, Zhao, Yu, Wang, Zhang, Li and Liu. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

    * Correspondence: Xuesong Han, Institute of food crops,Hubei academy of agricultural sciences, Wu Han, China

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