Effect of light exposure and carbohydrate content of snap bean leaves on Chinese rose beetle (Coleoptera: Scarabaeidae) feeding
1990
Furutani, S.C. | Arita, L.H.
Chinese rose beetle, Adoretus sinicus Burmeister,preferred to feed on snap bean, Phaseolus vulgaris L., leaves that were grown under ambientsunlight conditions compared with leaves from plants that had been placed in 24 hdarkness before feeding trials. Carbohydrate content in the leaves of plants grown insunlight was significantly higher than that of leaves from plants that had been exposed to 24 h ofdarkness. Application of exogenous carbohydrates to leaf explants from plants exposed to 24h darkness resulted in significantly more feeding on these explants compared with controls (plants grown under ambient sunlight). The results suggest that the amount of available carbohydrate content in leaves is involved in the selection of feeding material by theChinese rose beetle.
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