, Research Notes

Identification of resistance to cowpea severe mosaic virus (Trinidad isolate) in cowpea [Vigna unguiculata (L.) Walp.]

Research Notes
P. Umaharan
Department of Life Sciences, The University of the West Indies, St Augustine, Republic of Trinidad and Tobago
S.Q. Haque
Department of Life Sciences, The University of the West Indies, St Augustine, Republic of Trinidad and Tobago
R.P. Ariyanayagam
Department of Life Sciences, The University of the West Indies, St Augustine, Republic of Trinidad and Tobago
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Keywords

Cowpea severe mosaic virus
Disease resistance
Tolerance
Immunity
Screening

How to Cite

Identification of resistance to cowpea severe mosaic virus (Trinidad isolate) in cowpea [Vigna unguiculata (L.) Walp.]. (1997). Tropical Agriculture, 74(4). https://journals.sta.uwi.edu/ojs/index.php/ta/article/view/2531
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Abstract

One hundred and sixty cowpea [Vigna unguiculata (L.) Walp.] cultivars/germplasm lines were screened in a greenhouse for resistance to cowpea severe mosaic virus (CPSMV) (Trinidad isolate). Four lines were immune, 1 was tolerant, 3 were resistant, 12 were moderately resistant, and the remainder were susceptible. None possessed hypersensitive resistance. Comparison of the reactions of some lines tested by other workers with CPSMV strains from Puerto Rico, Suriname, Brazil, Arkansas (U.S.A.), Venezuela, Costa Rica, and Mexico showed the Trinidad isolate to be pathogenically distinct.
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