Change in Biochemical Activities in Yard Long Bean [Vigna Unguiculata Ssp. Sesquipedalis (L.) Verdc.]Infected with Cowpea Mosaic Virus and their Implication in Disease Resistance
Journal Title: International Journal of Agricultural Science and Research (IJASR) - Year 2017, Vol 7, Issue 5
Abstract
Yard long bean (Vignaunguiculata ssp. sesquipedalis(L.) Verdc.), is a distinct form of cowpea grown as a vegetable crop in southern Asia and far east, for its immature pods. Incidence of pests and diseases is considered to be a major limiting factor, affecting the production of this vegetable crop. The most important seed borne virus is the black eye cowpea mosaic virus, which is aphid transmitted. Variability in the degree of susceptibility among genotypes of yard long bean, against cowpea mosaic virus was observed. The activity of defence related enzymes peroxidase and polyphenol oxidase also exhibited a wide variation in the genotypes studied. A comparison of the vulnerability indices with their respective PAL activity, suggested the presence of a correlation between disease resistance and PAL activity of the plants. This particular trait can hence be utilised to screen, for resistance.
Authors and Affiliations
B Lovely, D S Radhadevi, K Umamaheswaran
Keywords
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