| 短时极端高温对亚洲玉米螟卵、初孵幼虫和成虫的影响 |
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| 引用本文：全玉东,何康来,王振营,魏洪义.短时极端高温对亚洲玉米螟卵、初孵幼虫和成虫的影响.植物保护学报,2015,42(6):985-990 |
| DOI：10.13802/j.cnki.zwbhxb.2015.06.018 |
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| 中文摘要:为探明短时极端高温对亚洲玉米螟Ostrinia furnacalis (Guenée)的影响,采用耐热能力测定方法,研究了亚洲玉米螟经6 h高温处理后的半数致死温度(LT50)、存活率以及不同高温下的半数致死时间(Lt50)。结果表明,经6 h高温处理后,亚洲玉米螟卵、初孵幼虫和成虫的LT50分别为40.24~40.44、38.59和42.84~44.54℃;当卵、初孵幼虫、1日龄和3日龄成虫分别在37、35、41和37℃时,其存活率与对照均无显著差异,而分别在39、37、43和39℃时,其存活率显著低于对照,卵、初孵幼虫、1日龄和3日龄成虫的短时高温阈值分别为37~39、35~37、41~43和37~39℃;当温度高于高温阈值时,卵、初孵幼虫和成虫的Lt50分别为0.38~6.31、0.22~8.35和3.80~24.15 h,且雄成虫的Lt50小于雌成虫。研究表明,短时极端高温对亚洲玉米螟的存活率具有显著影响。 |
| 中文关键词:亚洲玉米螟 短时极端高温 半数致死时间 半数致死温度 |
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| Effects of transient exposure to extremely high temperatures on egg, neonate and adult of Ostrinia furnacalis |
| Author Name | Affiliation | E-mail | | Quan Yudong | College of Agronomy, Jiangxi Agricultural University, Nanchang 330045, Jiangxi Province, China
State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China | | | He Kanglai | State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China | | | Wang Zhenying | State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China | | | Wei Hongyi | College of Agronomy, Jiangxi Agricultural University, Nanchang 330045, Jiangxi Province, China | hywei@jxau.edu.cn |
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| Abstract:To understand the effects of the transient exposure to extremely high temperatures on Asian corn borer, Ostrinia furnacalis (Guenée), the half lethal temperature (LT50) and the survival rate with 6 h high-temperature exposure, and the half lethal time (Lt50) under different high temperatures were examined. The results showed that the LT50 values of egg, neonate and moth were 40.24-40.44, 38.59 and 42.84-44.54℃, respectively. The survival rates of egg, neonate, 1-day moth and 3-day moth had no significant difference from the control at 37, 35, 41, or 37℃, respectively. However, the survival rates of egg, neonate, 1-day moth and 3-day moth were significantly lower than the control at 39, 37, 43 and 39℃, respectively. The critical high temperatures for egg, neonate, 1-day moth and 3-day moth were 37-39, 35-37, 41-43 and 37-39℃, respectively. Over the critical high temperature, the Lt50 values of egg, neonate and moth were 0.38-6.31, 0.22-8.35 and 3.80-24.15 h, respectively. The Lt50 of male was shorter than that of the female. The results indicated that extremely high temperatures significantly influenced the survival rate of O. furnacalis. |
| keywords:Ostrinia furnacalis transient extremely high temperature Lt50 LT50 |
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