Quantifies the effect of corn leaf aphid feeding on maize plant development and grain fill.
Five maize (Zea mays L.) inbred lines (B37, B73, C103, Mo17, and B96 [41: 2504B]) were infested with alate corn leaf aphids, Rhopalosiphum maidis (Fitch), in the greenhouse, and then transplanted to the field to quantify the effects of seedling feeding. Feeding by corn leaf aphids on coleoptile and two-leaf stage plants delayed plant development; plant height was reduced, and pollen shed and silking were delayed. Grain fill was also lower for plants infested in the coleoptile, two-leaf, and four-leaf stages compared with uninfested plants. Aphid feeding reduced grain-fill ratings in inbreds B37, CI03, and B96, but did not reduce grain fill in B73 and Mo17. Alate corn leaf aphid feeding on seedling maize can affect plant development and grain fill later in the season.
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Bing et al. (1991) studied this question.
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