Maternal inheritance of male sterility in the progeny of a natural hybrid between Cajanus lineatus and C. cajan

Saxena, K B and Kumar, R V and Rao, R and Saxena, R K (2018) Maternal inheritance of male sterility in the progeny of a natural hybrid between Cajanus lineatus and C. cajan. Plant Breeding (TSI). pp. 1-5. ISSN 0179-9541

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Abstract

Adoption of pigeonpea hybrids in central and southern India is showing high impact with on‐farm yield advantages of >30%. The hybrid pigeonpea technology, the first in any legume crop, is based on a cytoplasmic‐nuclear male‐sterility (CMS) system. For a long‐term sustainability of hybrid programme, it is imperative that both nuclear diversity and cytoplasmic diversity are maintained among hybrid parents. In this context, a continuous search for new CMS‐inducing cytoplasms is necessary. This paper reports detection of maternal inheritance of male sterility in the progeny derived from a natural hybrid between a wild relative [Cajanus lineatus (W. & A.) Maesen comb. nov.] of pigeonpea and an unknown pigeonpea [Cajanus cajan (L.) Millsp.] genotype. In the present study, the male sterility was maintained up to BC7F1 generation by an advanced breeding pigeonpea line ICPL 99044. This male sterility inducing cytoplasm of C. lineatus was tagged as A6. In future, this CMS genetic stock can be used to develop a range of new pigeonpea hybrids with high yield and adaptation.

Item Type: Article
Divisions: Research Program : Genetic Gains
CRP: CGIAR Research Program on Grain Legumes
Uncontrolled Keywords: Cajanus cajan, Cajanus lineatus, male sterility, maternal inheritance, wild species, male sterility, pigeonpea hybrids, pigeonpea
Subjects: Others > Plant Breeding
Mandate crops > Pigeonpea
Depositing User: Mr Ramesh K
Date Deposited: 02 Apr 2018 09:50
Last Modified: 02 Apr 2018 09:50
URI: http://oar.icrisat.org/id/eprint/10509
Official URL: http://dx.doi.org/10.1111/pbr.12571
Projects: UNSPECIFIED
Funders: Science and Engineering Research Board (SERB), Government of India; United States Agency for International Development (USAID); and ICRISAT
Acknowledgement: The authors are thankful to the Science and Engineering Research Board (SERB), Government of India; United States Agency for International Development (USAID); and ICRISAT for funding. This work has been undertaken as part of the CGIAR Research Program on Grain Legumes. ICRISAT is a member of CGIAR Consortium.
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