Cold Hardiness of Diapausing Rice Stem Borer, Chilo suppressalis Walker (Lepidoptera: Pyralidae)
2005
Cho, J.R. (National Institute of Agricultural Science and Technology, RDA, Suwon, Republic of Korea), E-mail: [email protected] | Lee, J.S. (Agricultural Research Center, Osan, Republic of Korea) | Kim, J.J. (National Institute of Agricultural Science and Technology, RDA, Suwon, Republic of Korea) | Lee, M.H. (National Institute of Agricultural Science and Technology, RDA, Suwon, Republic of Korea) | Kim, H.S. (National Institute of Agricultural Science and Technology, RDA, Suwon, Republic of Korea) | Boo, K.S. (Seoul National University, Seoul, Republic of Korea)
This study was carried out to investigate the supercooling point (SCP), cold hardiness, and content of glycerol in the rice stem borer, Chilo suppressalis, larvae field-collected at different dates to understand the relationship between diapause and cold hardiness. Field-collected C. suppressalis larvae became cold-hardy from late autumn and higher level of survival was maintained from October to April. Lab-reared C. suppressalis larvae pre-treated at 0℃ for 1 h or 2 h enhanced their survival to low temperature (-10℃).
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