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Nature of Resistance to Phytophthora Blight in Pigeonpea—Breeding Implications

OAR@ICRISAT

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Relation http://oar.icrisat.org/2913/
 
Title Nature of Resistance to Phytophthora Blight in Pigeonpea—Breeding Implications
 
Creator Gupta, A K
Singh, I S
Reddy, M V
Bajpai, G C
 
Subject Pigeonpea
 
Description 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.
 
Publisher International Crops Research Institute for the Semi-Arid Tropics
 
Date 1996
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
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Identifier http://oar.icrisat.org/2913/1/ICPN3%252869-71%25291996.pdf
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