西北农业学报2025，Vol.34Issue(1)：177-183,7.DOI:10.7606/j.issn.1004-1389.2025.01.020
番茄潜叶蛾不同发育阶段过冷却点和结冰点的测定
Determination of Supercooling and Freezing Points of Tuta absoluta at Different Development Stages
摘要
Abstract
This study aimed to investigate the cold tolerance of Tuta absoluta at different developmen-tal stages,providing a basis for establishing overwintering conditions and forecasting the pest's sur-vival in differing climates.The supercooling and freezing points of larvae,pupae and adults of T.abso-luta were measureed using an insect supercooling point tester.The results showed that the average supercooling point was lowest in first-instar larvae(-21.63 ℃)and highest in third-instar larvae(-15.97 ℃),while values for other stages followed in descending order:adults(-21.40 ℃)＜fourth-instar larvae(-19.98 ℃)＜pupae(-19.37 ℃)＜second-instar larvae(-17.96 ℃).The average freezing point was lowest in adults(-19.37 ℃)and highest in third-instar larvae(-12.60 ℃),with other developmental stages ordered as follows:first-instar larvae(-18.93 ℃)＜fourth-instar larvae(-16.32 ℃)＜pupae(-16.16 ℃)＜second-instar larvae(-14.24 ℃).These findings indicate that first-instar larvae and adults of T.absoluta exhibit a high cold resistance,where-as the third-instar larvae display relatively lower tolerance.T.absoluta is unlikely to overwinter in open field conditions in Ningxia,although the greenhouse may provide protective environments for survival under adverse climates.Controlling the population density of is critical for preserving the yield and quality of early spring crops.关键词
番茄潜叶蛾/过冷却点/结冰点/耐寒性/越冬Key words
Tuta absoluta/Supercooling point/Freezing point/Hardiness/Overwintering引用本文复制引用
丁嘉欣,刘媛,王新谱..番茄潜叶蛾不同发育阶段过冷却点和结冰点的测定[J].西北农业学报,2025,34(1):177-183,7.基金项目
宁夏重点研发计划重点项目(2023BCF01045). Key Research and Development Plan of Ningxia Hui Autonomous Region(No.2023BCF01045). （2023BCF01045）
