LIU Jim-he;YU Ming-fu;HE Da-han

College of Agronomy ; Yinchuan 750021;Ningxia University

Florist cinerarias;Liriomyza sativae;Development duration;Cold tolerance;Survival rate

In this study, Liriomyza sativaes was raised on Florist cinerarias in greenhouse with different temperatures at 15 , 20, 25, 30 and 35 degC , and their corresponding development duration of entire generation were 47.0, 25.0, 15.5, 12.5 and 12.0 d. Thebeginning growth temperatures of egg, larva, pupa and entire generation of Liriomyza sativae were 8.5, 9.8, 10.2 and 10.4 deg C , and their effective accumulated temperatures were 52. 7, 75. 8, 158. 5 and 262.2 d deg C , respectively. Liriomyza sativaehad 7 generations on Florist cinerarias in Ningxia each year. However, it occurred in the whole year in greenhouse. The length of its development duration in greenhouse decreased in order from cucumber, Callestephus chinensis, Florist cinerarias to pea,but the eclosion rate of its pupa was in the contrary order. Under the temperature of 10, 0,- 15 and 20 deg C ,the longer the storage of pupa was,the higher the mortality rate would be. Liriomyza sativae couldn' t survive in the winter in Ningxia Province in the natural environment.