Effects of Different Cold Acclimation Conditions on Cold Storage in Trichogramma ostriniae

doi:10.16409/j.cnki.2095-039x.2016.02.021

Abstract

Abstract: Cold acclimation is an important survival strategy for insects to cope with cool environments. Acclimation temperature, acclimation duration and storage duration are the key factors in cold acclimation. Orthogonal test and variance analysis were used to determine the impacts of different acclimation temperature, acclimation duration and storage duration on storage of Trichogramma ostriniae at 4℃. The results showed that interaction between acclimation temperature and duration on emergence number and emergence rate was significant. The maximum emergence number was 66.75±3.50 and emergence rate was (64.91±2.04)% for cold acclimation for 10 days at 15℃. The maximum emergence rate was (75.50±6.78)% and emergence number was 56.75±4.84 for cold acclimation for 20 days at 10℃. Cold storage duration also significantly affected emergence. Emergence number and emergence rate reached the maximum when cold storage duration was 60 or 90 days. The emergence number was 53.61±3.64 and 55.39±3.51, and the emergence rate was (66.07±4.17)% and (68.30±4.08)%, respectively. The optimal conditions of cold acclimation were 10 days at 15℃. These results are of important theoretical significance for studies of low-temperature tolerance and cold storage in T. ostriniae.

Key words: cold acclimation, Trichogramma ostriniae, cold storage

CLC Number:

S476.3

ZHANG Ye, LIAN Meili, LI Tang, ZHU Wenya. Effects of Different Cold Acclimation Conditions on Cold Storage in Trichogramma ostriniae[J]. journal1, DOI: 10.16409/j.cnki.2095-039x.2016.02.021.

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