Cotton Leaf Crumple Virus Disease in Okra-leaf and Normal-leaf Cottons

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Abstract
Cotton leaf crumple virus (CLCV) was transmitted in a greenhouse by the sweetpotato whitefly, Bemisia tabaci (Gennadius), to seedlings of cotton plants, Gossypium hirsutum L., representing five normal-leaf cultivars and their okra-leaf isolines. Infected and control plants were moved to the field and compared with each other. CLCV-infected plants were 25% shorter, produced 47% fewer open bolls, and yielded 50% less seedcotton than the control plants. Disease symptoms were expressed less in two okra-leaf isolines than in their normal-leaf cultivars, but yields were not significantly different.