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ViewAttendees 5

10-Minute Paper

Plant-Insect Ecosystems

P-IE: Host-Plant Resistance

Feeding preference and performance of Helicoverpa zea (Lepidoptera: Noctuidae) larvae on various cannabis hemp CBD varieties and tissue types

Tuesday, November 7, 2023
4:30 PM – 4:42 PM ET
Location: Gaylord National Resort & Convention Center, National Harbor 11
In-Person
Helicoverpa zea Boddie (Lepidoptera: Noctuidae) feeding preference and performance on cannabis hemp varieties and tissue types is poorly understood. We assessed preference by looking at feeding behavior and resulting performance of 2nd and 4th instar H. zea larvae on leaves and flowers in no-choice and choice assays. Consumption indices were calculated and observed feeding behaviors were used to indicate preference; survival, growth rate, and larval body mass were recorded as measures of performance. If H. zea exhibits similar behavior under field conditions, information on preference can be used to inform management practices in hemp and may aid in the development of conventionally bred and transgenic varieties.