Fine mapping of a major quantitative trait locus that regulates pod shattering in soybean

Muqiang Gao, Hongyan Zhu

Research output: Contribution to journalArticlepeer-review

21 Scopus citations

Abstract

Legumes represent the second most important family of crop plants, accounting for ~27 % of the world's crop production. While some legumes are grown as forages or vegetables, most crop legumes are grown for harvesting their nutritious seeds. The legume seeds are contained in the pod, which is composed of a single seed-bearing carpel that, when matures, splits open along two seams, a process called pod dehiscence or pod shattering. Pod shattering before or during harvest causes yield losses of grain legumes. Moreover, the dominant shattering trait of the wild progenitors is a limiting factor for efficient introgression of value-added traits into elite breeding lines. Knowledge of the genetic mechanisms underlying pod shattering will facilitate breeding of shattering-resistant varieties, expedite introgression of agronomically favorable traits from wild species to elite breeding lines, and enrich our understanding of the evolution of seed dispersal and crop domestication in diverse crop species. Here we report fine mapping of a major quantitative trait locus (designated as qPDH1) that regulates pod shattering in soybean (Glycine max). A combination of linkage and association mapping allowed us to delimit the qPDH1 locus within a 47-kb region on chromosome 16. The data reported here will facilitate positional cloning of the underlying gene and the development of breeder-friendly genetic markers for marker-assisted selection in soybean.

Original languageEnglish
Pages (from-to)485-491
Number of pages7
JournalMolecular Breeding
Volume32
Issue number2
DOIs
StatePublished - Aug 2013

Keywords

  • Legume
  • Pod shattering
  • Quantitative trait locus
  • Soybean

ASJC Scopus subject areas

  • Genetics
  • Molecular Biology
  • Agronomy and Crop Science
  • Biotechnology
  • Plant Science

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