Euphytica

, 166:15

Population-specific QTLs and their different epistatic interactions for pod dehiscence in soybean [Glycine max (L.) Merr.]

  • Sung-Taeg Kang
  • Myounghai Kwak
  • Hyeun-Kyeung Kim
  • Myoung-Gun Choung
  • Won-Young Han
  • In-Youl Baek
  • Moon Young Kim
  • Kyujung Van
  • Suk-Ha Lee
Article

DOI: 10.1007/s10681-008-9810-6

Cite this article as:
Kang, S., Kwak, M., Kim, H. et al. Euphytica (2009) 166: 15. doi:10.1007/s10681-008-9810-6

Abstract

Pod dehiscence (PD) prior to harvest results in serious yield loss in soybean. Two linkage maps with simple sequence repeat (SSR) markers were independently constructed using recombinant inbred lines (RILs) developed from Keunolkong (pod-dehiscent) × Sinpaldalkong (pod-indehiscent) and Keunolkong × Iksan 10 (pod-indehiscent). These soybean RIL populations were used to identify quantitative trait loci (QTLs) conditioning resistance to PD. While a single major QTL on linkage group (LG) J explained 46% of phenotypic variation in PD in the Keunolkong × Sinpaldalkong population with four minor QTLs, three minor QTLs were identified in the Keunolkong × Iksan 10 population. Although these two populations share the pod dehiscent parent, no common QTL has been identified. In addition, epistatic interactions among three marker loci partially explained phenotypic variation in PD in both populations. The result of this study indicates that different breeding strategies will be required for PD depending on genetic background.

Keywords

Pod dehiscenceQTLEpistatic interactionSimple sequence repeatGenetic linkage mapRecombinant inbred line

Copyright information

© Springer Science+Business Media B.V. 2008

Authors and Affiliations

  • Sung-Taeg Kang
    • 1
  • Myounghai Kwak
    • 2
  • Hyeun-Kyeung Kim
    • 3
  • Myoung-Gun Choung
    • 4
  • Won-Young Han
    • 5
  • In-Youl Baek
    • 5
  • Moon Young Kim
    • 2
  • Kyujung Van
    • 2
  • Suk-Ha Lee
    • 2
    • 6
  1. 1.National Institute of Crop ScienceSuwonSouth Korea
  2. 2.Department of Plant Science and Research Institute for Agriculture and Life SciencesSeoul National UniversitySeoulSouth Korea
  3. 3.School of Resources and Life SciencePusan National UniversityMilyangSouth Korea
  4. 4.Department of Herbal Medicine ResourceKangwon National UniversitySamcheokSouth Korea
  5. 5.Yeongnam Agricultural Research InstituteMilyangSouth Korea
  6. 6.Plant Genomics and Breeding InstituteSeoul National UniversitySeoulSouth Korea