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ORIGINAL RESEARCH article

Front. Plant Sci.

Sec. Plant Breeding

Volume 16 - 2025 | doi: 10.3389/fpls.2025.1647985

Genome wide association analysis for biomass related traits in common vetch (Vicia sativa L.)

Provisionally accepted
Hui  JinHui Jin1*Jumei  ZhangJumei Zhang1Yordan  DimtrovYordan Dimtrov1Xue  YangXue Yang1Ruonan  DuRuonan Du1Yu-E  WuYu-E Wu1Danna  ChangDanna Chang2Rui  ZhangRui Zhang1Haibin  ZhaoHaibin Zhao1*
  • 1Heilongjiang Academy of Agricultural Sciences, Harbin, China
  • 2Chinese Academy of Agricultural Sciences, Beijing, China

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

Common vetch (Vicia sativa L.) is a leguminous plant widely cultivated in Asia, Europe, and the Americas, primarily used as a forage crop and green manure. To identify loci significantly associated with biomass related traits, a genome-wide association study (GWAS) was perdormed in 172 common vetch accessions mainly from China and Europe. The single nucleotide polymorphisms (SNPs) were obtained through re-sequencing, while five biomass related traits, including the fresh weight (FW), dry weight (DW), fresh weight per plant (PFW), dry weight per plant (PDW) and plant height (PH), were evaluated across four environments. In total, 33 loci were identified, and explain 11.6-22.5% of the phenotypic variances. Notably, among them, qPDW1.2 and qPFW1.3, qPH2.1 and qFW2.1, qDW4.1 and qFW4.1, qPH5.1 and qPH5.1, qDW6.1 and qFW6.1 are overlapped or located in the same genomic region, exhibiting pleiotropic effects on two traits, and should be prioritized in further vetch breeding programs. Additionally, all the 33 loci are novel compared with previous reports. Fifth candidate genes for biomass related traits were identified for biomass related traits, encoding ethylene-responsive transcription factors, ABC transporter family proteins, serine/threonine-protein phosphatase, cellulose synthase, and auxin-responsive proteins. Furthermore, we successfully developed and verified a kompetitive allele-specific PCR (KASP) marker (Kasp-DW1.1) for dry weight. Accessions with more favorable alleles, superior biomass related traits and agronomic traits, eg. GLF295, GLF299, GLF313, GLF321, GLF325, GLF328, GLF329, GLF330, GLF331, GLF335, HZMC1382 and HZMC1487 are recommended as parental lines for further common vetch breeding. This study enhances our understanding of the genetic architecture of biomass related traits and provides available novel loci, molecular tools and outstanding varieties for improving common vetch biomass in future breeding.

Keywords: association analysis, Dry weight, Fresh weight, marker-assisted selection (MAS), Vicia sativa L

Received: 16 Jun 2025; Accepted: 28 Aug 2025.

Copyright: © 2025 Jin, Zhang, Dimtrov, Yang, Du, Wu, Chang, Zhang and Zhao. 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:
Hui Jin, Heilongjiang Academy of Agricultural Sciences, Harbin, China
Haibin Zhao, Heilongjiang Academy of Agricultural Sciences, Harbin, China

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