Indian Society of Genetics & Plant Breeding

Potential donors for powdery mildew resistance in cowpea [Vigna unguiculata (L.) Walp.]

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Powdery mildew is one of the serious diseases of cowpea
[Vigna unguiculata (L.) Walp.] prevalent in southern India.
Therefore, the present investigation was carried out at
the IARI Centre for Improvement of Pulses in South,
Dharwad during kharif 2002 and 2003. A set of 120
germplasm accessions (excluding local checks) of cowpea
germplasm of diverse origin were grown in augmented
design. The cowpea variety V 240 (Rambha) and a local
variety (Dharwad local) were used as checks after every
10th entry. Observations on the severity of powdery mildew
disease were recorded at podding and maturity stages.
The observations on the ancillary characters were also
recorded at appropriate stages. Out of 120 germplasm
accession under study, 101 turned out to be susceptible
(PMS) and only 11 resistant to powdery mildew (PMR).
Notably, five germplasm accessions namely, C 7, C 200,
C 265, C 347 and C 402 maintained high level of resistance
during both the years. These genotypes may be good
parents for genetic analysis of the PMR trait and and
resistance breeding of cowpea

Keywords: Cowpea, germplasm, powdery mildew, resistance


Year: 2005
Volume: 65
Issue: 3
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906



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