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

Shashi Kumar Gupta, Kedar Nath Rai, Mahalingam Govindaraj and Aluri Sambasiva Rao
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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

Czech Journal of Genetics and Plant Breeding, 2012, vol. 48, issue 2, 87-92

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.

Keywords: A4 cytoplasm; fertility restoration; inheritance; male sterility; Pennisetum glaucum (search for similar items in EconPapers)
Date: 2012
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlcjg:v:48:y:2012:i:2:id:164-2011-cjgpb

DOI: 10.17221/164/2011-CJGPB

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