Resistance in Rutabagas to the Cabbage Maggot, Hylemya brassicae (Bouché) (Diptera: Anthomyiidae)

Abstract

Resistance in plants to the cabbage maggot, Hylemya brassicae (Bouché), has not been investigated extensively. Glasgow (1925) and Whitcomb (1944) compared the percentages of infestation of species of cruciferous crops and varieties of cabbaage. Whitcomb (1944) attributed differences in degree of injury among 13 cabbage varieties t o resistance in the plants rather than to repellent action during oviposition. He observed that the faster-growing varieties of cabbage were more susceptible to injury. The investigations reported herein were designed to determine if rutabagas had resistance to the cabbage maggot.