Abstract: T richogr amma brassi cae were reared on Si tot roga cerealel la eggs by four treatment s. Quality ofeach treatment was assessed in 20th generation. Longev ity and fecundity of t reatments by selection of Tr-ichogramma wasps w ere notably higher than t reatments without selection. Results showed no notably dif ferencebetween t reatments with fluctuate temperature exercise and t reatment s without f luctuate temperature exercise,but t reatments with f luctuate temperature exercise represented obvious longer longevity and hig her fecunditythan t reatments without exercise.

Key words: Sitotroga cerealella, T ri chogr amma brassicae, Mass rearing, Quality control, Fluctuate temperature exercise, Sellect ion

CLC Number: 

• S433??