Nature of Resistance to Phytophthora Blight in Pigeonpea—Breeding Implications

Gupta, A K and Singh, I S and Reddy, M V and Bajpai, G C (1996) Nature of Resistance to Phytophthora Blight in Pigeonpea—Breeding Implications. International Chickpea Newsletter, 3. pp. 69-71. ISSN 0257-2508

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Abstract

Seedlings of parental, F1, F2 and backcross generations of 8 pigeon pea [Cajanus cajan] crosses (6 between susceptible and resistant genotypes, and 2 between susceptible parents) were screened against isolate P3 of Phytophthora drechsleri f.sp. cajani in a greenhouse trial. Estimates of genetic variance components, heterosis and inbreeding depression were calculated. Results indicated the monogenic dominant nature of resistance and the presence of some minor genes involved in resistance expression. Heritability estimates were generally high and environmental variance was low. Breeding schemes to fully utilize this durable source of dominant resistance (pd3) in pigeon pea are discussed.

Item Type: Article
Divisions: UNSPECIFIED
CRP: UNSPECIFIED
Subjects: Mandate crops > Pigeonpea
Depositing User: Library ICRISAT
Date Deposited: 24 Oct 2011 13:47
Last Modified: 24 Oct 2011 13:47
URI: http://oar.icrisat.org/id/eprint/2913
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Projects: UNSPECIFIED
Funders: Council of Scientific and Industrial Research(India)
Acknowledgement: UNSPECIFIED
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