Euphytica

, Volume 106, Issue 1, pp 57–62 | Cite as

Molecular mapping of a new genic male-sterility gene causing chalky endosperm in rice ( Oryza sativa L.)

  • H.J. Koh
  • Y.H. Son
  • M.H. Heu
  • H.S. Lee
  • S.R. McCouch

Abstract

A genic male-sterility gene newly induced by chemical mutagenesis, tentatively designated as ms-h(t), was located on the molecular map of rice and tested for its effect on chalky endosperm. Bulked segregant analysis was used to determine the chromosomal location of the ms-h(t) locus by screening four to five RFLP markers per chromosome. After confirming that the gene was located on chromosome 9, twenty-four RFLP markers from chromosome 9 were surveyed for polymorphism in the parents of the mapping population. Of these, eleven markers were mapped around the ms- h(t) locus. RG451 and RZ404 flanked the ms-h(t) gene, at 2.5cM and 3.3cM, respectively. Heterozygous F2 to F4 progenies were tested for co- segregation of male-sterility and chalky endosperm and it was revealed that ms-h(t) might have a pleiotropic effect on chalky endosperm. This mutant would be a good biological material to characterize the biochemical mechanism of male sterility and related pleiotropic effects. Further studies should be needed to know the usefulness of this mutant for hybrid seed production.

genic male-sterility gene mapping molecular markers Oryza sativa pleiotropic effect 

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Copyright information

© Kluwer Academic Publishers 1999

Authors and Affiliations

  • H.J. Koh
    • 1
  • Y.H. Son
    • 1
  • M.H. Heu
    • 1
  • H.S. Lee
    • 1
  • S.R. McCouch
    • 2
  1. 1.Department of Agronomy, College of Agriculture & Life SciencesSeoul National UniversitySuwonKorea
  2. 2.Department of Plant Breeding and BiometryCornell UniversityIthacaU.S.A

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