Development of cytoplasmic-nuclear male sterility, its inheritance, and potential use in hybrid pigeonpea breeding.

Saxena, K.B. and Ravikoti, V.K. and Dalvi, V.A. and Pandey, L.B. and Gaddikeri, G. (2010) Development of cytoplasmic-nuclear male sterility, its inheritance, and potential use in hybrid pigeonpea breeding. Journal of Heredity, 101 (4). pp. 497-503.

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Abstract

Pigeonpea [Cajanus cajan (L.) Millsp.] is a unique food legume because of its partial (20-30%) outcrossing nature, which provides an opportunity to breed commercial hybrids. To achieve this, it is essential to have a stable male-sterility system. This paper reports the selection of a cytoplasmic-nuclear male-sterility (CMS) system derived from an interspecific cross between a wild relative of pigeonpea (Cajanus sericeus Benth. ex. Bak.) and a cultivar. This male-sterility source was used to breed agronomically superior CMS lines in early (ICPA 2068), medium (ICPA 2032), and late (ICPA 2030) maturity durations. Twenty-three fertility restorers and 30 male-sterility maintainers were selected to develop genetically diverse hybrid combinations. Histological studies revealed that vacuolation of growing tetrads and persistence of tetrad wall were primary causes of the manifestation of male sterility. Genetic studies showed that 2 dominant genes, of which one had inhibitory gene action, controlled fertility restoration in the hybrids. The experimental hybrids such as TK 030003 and TK 030009 in early, ICPH 2307 and TK 030625 in medium, and TK 030861 and TK 030851 in late maturity groups exhibited 30-88% standard heterosis in multilocation trials.

Item Type: Article
Author Affiliation: International Crops Research Institute for the Semi-Arid Tropics, Patancheru, 502 324, Andhra Pradesh, India.
Subjects: Crop Improvement
Crop Improvement > Plant Breeding
Divisions: Pigeonpea
Depositing User: Mr B Krishnamurthy
Date Deposited: 21 Oct 2010 03:04
Last Modified: 21 Oct 2010 03:04
Official URL: http://dx.doi.org/10.1093/jhered/esq028
URI: http://eprints.icrisat.ac.in/id/eprint/155

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