Reaction of Cowpea Introductions to Infection with the Cowpea Strain of Southern Bean Mosaic Virus

Publisher Website
Google Scholar
Abstract
In field and greenhouse studies, 1029 introductions of cowpea [Vigna unguiculata, V. sinensis] were evaluated for reaction to infection with the cowpea strain of southern bean mosaic virus (SBMV-CS). The expression of wide genotype-specific variability for reaction to SBMV-CS infection was, in part, influenced by season. Symptom groups identified and proportion of plants in each group were mosaic (81%), vein clearing (21%), leaf distortion (18%), stunting and dwarfing (16%), chlorosis (12%), distinct chlorotic spots (2%), early senescence (2%), generalized necrosis (1%), necrotic local lesions (1%) and spindled plants (0.2%). Distinct chlorotic spots, entire leaf chlorosis, generalized necrosis and spindling plants were not previously reported in association with SBMV-CS infection. Levels of field tolerance were high, in the form of symptomless carriers. Seed transmission ranged 0-25%; most entries had < 10%.

This publication has 0 references indexed in Scilit: