title: Mapping and use of QTLs controlling pod dehiscence in soybean.
abstract: While the cultivated soybean, Glycine max (L.) Merr., is more recalcitrant to pod dehiscence (shattering-resistant) than wild soybean, Glycine soja Sieb. & Zucc., there is also significant genetic variation in shattering resistance among cultivated soybean cultivars. To reveal the genetic basis and develop DNA markers for pod dehiscence, several research groups have conducted quantitative trait locus (QTL) analysis using segregated populations derived from crosses between G. max accessions or between a G. max and G. soja accession. In the populations of G. max, a major QTL was repeatedly identified near SSR marker Sat_366 on linkage group J (chromosome 16). Minor QTLs were also detected in several studies, although less commonality was found for the magnitudes of effect and location. In G. max × G. soja populations, only QTLs with a relatively small effect were detected. The major QTL found in G. max was further fine-mapped, leading to the development of specific markers for the shattering resistance allele at this locus. The markers were used in a breeding program, resulting in the production of near-isogenic lines with shattering resistance and genetic backgrounds of Japanese elite cultivars. The markers and lines developed will hopefully contribute to the rapid production of a variety of shattering-resistant soybean cultivars.
authors.affiliation: NARO Western Region Agricultural Research Center (NARO/WARC) , Nishifukatsu, Fukuyama, Hiroshima 721-8514, Japan.
authors.forename: Hideyuki
authors.initials: H
authors.lastname: Funatsuki
authors.forename: Makita
authors.initials: M
authors.lastname: Hajika
authors.forename: Tetsuya
authors.initials: T
authors.lastname: Yamada
authors.forename: Masaya
authors.initials: M
authors.lastname: Suzuki
authors.forename: Seiji
authors.initials: S
authors.lastname: Hagihara
authors.forename: Yoshinori
authors.initials: Y
authors.lastname: Tanaka
authors.forename: Shohei
authors.initials: S
authors.lastname: Fujita
authors.forename: Masao
authors.initials: M
authors.lastname: Ishimoto
authors.forename: Kaien
authors.initials: K
authors.lastname: Fujino
keywords: Soybean (Glycine max); marker-assisted selection (MAS); pod dehiscence; quantitative trait loci (QTLs); shattering resistance; wild soybean (Glycine soja)