Laboratory Evaluation of Resistance in Rutabaga Varieties to the Cabbage Maggot, Hylemya brassicae (Bouché) (Diptera: Anthomyiidae)

Previous studies have shown that some varieties of rutabagas in the field have resistance to the cabbage maggot, Hylemya brassicae (Bouché) (Swailes, 1959). It was evident that at least two factors were involved in resistance: (1) larvae encountered difficulties in initiating feeding and (2) larvae encountered resistance to growth. The latter factor was considered in the present study.