# 온실가루이의 저온장애에 관한 연구

• Choe Kwang-Ryul (Dept. of Agricultural Biology, College of Agriculture, Chungnam National University) ;
• Park Joong-Soo (Dept. of Entomology, Institute of Agricultural Sciences, Office of Rural Development)
• 최광열 (충남대학교 농과대학 농생물학과) ;
• 박중수 (농촌진흥청 농업기술연구소 곤충과)
• Published : 1983.12.01
• 49 10

#### Abstract

Results obtained from the experiment conducted to determine the potential distribution of greenhouse white flies are summerized as follows; Hatching rate of eggs were significantly decreased when eggs were treated under $-5^{\circ}C$ for three days and no eggs were hatched when 4he eggs were treated at $10^{\circ}C$. for three days. Kate of pupation was also decreased when larvae were subjected to $-5^{\circ}C$ for three days and no pupation of larvae was of served when the larvae were under $-20^{\circ}C$ for three days. Emergency rate of pupae was decreased when pupae were under $-20^{\circ}C$. for three days and no emergence was observed when pupae were treated at the temperature of $-20^{\circ}C$ for three days. Survival rate of adults were greatly decreased when they were under $-7.5^{\circ}C$. for three days and the adults were completely dead when they were subjected to $-10^{\circ}C$. for three days. Therefore, it may be concluded that the greenhouse white flies may be overwintered, in the from of pupae at the middle-southern part of Korea, while they may overwinter in all developmental stages in Jeju Island and in southern tip coast area of Korea.