Inheritance of fertility restoration of A5 cytoplasmic-nuclear male sterility system in pearl millet [Pennisetum glaucum (L.) R. Br.]

Gupta, S K and Yadav, D V and Govindaraj, M and Boratkar, M and Kulkarni, V N and Rai, K N (2018) Inheritance of fertility restoration of A5 cytoplasmic-nuclear male sterility system in pearl millet [Pennisetum glaucum (L.) R. Br.]. Indian Journal of Genetics and Plant Breeding (TSI), 78 (2). pp. 228-232. ISSN 0019-5200

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Abstract

The A5 cytoplasmic-nuclear male sterility (CMS), the most stable cytoplasm available in pearl millet [Pennisetum glaucum (L). R. Br.] is yet to be utilized on large scale by breeders owing to limited fertility restoration in the available germplasm for this cytoplasm. An understanding of the inheritance of fertility restoration can make significant contributions to restorer breeding efficiency of this CMS system. This study investigated inheritance of fertility restoration of this CMS system in which three diverse isonuclear A-lines (P1) were crossed with two A5 restorer lines (P2) to produce 4 F1s and their respective F2s and two backcrosses. These were evaluated for male sterility (S) and fertility (F) for two seasons at International Crops Research Institute for the Semi-Arid Tropics (ICRISAT) Patancheru. The segregation patterns in the F2 (54F:10S) and BCP1 (3F:1S) were broadly suggestive of trigenic inheritance of male fertility restoration, where dominant alleles at any two of the three duplicate complimentary loci will lead to fertility restoration.

Item Type:	Article
Divisions:	Research Program : Asia
CRP:	CGIAR Research Program on Dryland Cereals
Uncontrolled Keywords:	Pennisetum glaucum, A5 CMS, inheritance, cytoplasmic-nuclear male sterility, pearl millet, fertility restoration, plant breeding, male fertility restoration
Subjects:	Others > Plant Breeding Mandate crops > Millets > Pearl Millet Others > Germplasm
Depositing User:	Mr Ramesh K
Date Deposited:	14 Jun 2018 08:30
Last Modified:	14 Jun 2018 08:32
URI:	http://oar.icrisat.org/id/eprint/10744
Official URL:	http://dx.doi.org/10.5958/0975-6906.2018.00029.9
Projects:	UNSPECIFIED
Funders:	UNSPECIFIED
Acknowledgement:	Authors acknowledge the financial support provided by ICRISAT-PMHPRC (Pearl Millet Hybrid Parents Research Consortium) to conduct this study. Preparation of this manuscript has been undertaken as part of the CGIAR Research Program on Dryland Cereals.
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