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Genetics of fertility restoration of the A4 cytoplasmic-nuclear male sterility system in pearl millet

Author

Listed:
  • Shashi Kumar GUPTA

    (International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Patancheru, Andhra Pradesh, India)

  • Kedar Nath RAI

    (International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Patancheru, Andhra Pradesh, India)

  • Mahalingam GOVINDARAJ

    (International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Patancheru, Andhra Pradesh, India)

  • Aluri Sambasiva RAO

    (International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Patancheru, Andhra Pradesh, India)

Abstract

Inheritance of fertility restoration of the A4 system of cytoplasmic-nuclear male sterility in pearl millet was investigated using six crosses between two diverse male sterile lines (A-lines) and three diverse restorers (R-lines). The segregation pattern of male sterile (S) and male fertile (F) plants observed in F2, and BC1 in two seasons at ICRISAT, Patancheru, indicated the dominant single-gene control of male fertility restoration. The segregation pattern in BC1F2 progenies derived from the fertile BC1 plants evaluated for one season provided further evidence for the single-gene control. The season did not have much effect on fertility restoration. The information on the single-gene control of fertility restoration will help in diversifying the restorer genetic base of the A4 CMS system and enhance R-line breeding efficiency in pearl millet.

Suggested Citation

  • Shashi Kumar GUPTA & Kedar Nath RAI & Mahalingam GOVINDARAJ & Aluri Sambasiva RAO, 2012. "Genetics of fertility restoration of the A4 cytoplasmic-nuclear male sterility system in pearl millet," Czech Journal of Genetics and Plant Breeding, Czech Academy of Agricultural Sciences, vol. 48(2), pages 87-92.
    • Handle: RePEc:caa:jnlcjg:v:48:y:2012:i:2:id:164-2011-cjgpb
    DOI: 10.17221/164/2011-CJGPB
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