| 二化螟不同年龄段越冬幼虫的耐寒性比较 |
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| 引用本文： | 徐淑,周兴苗,曾俊,雷朝亮,王小平.二化螟不同年龄段越冬幼虫的耐寒性比较[J].植物保护学报,2009,36(1):11-15. |
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| 作者姓名： | 徐淑 周兴苗 曾俊 雷朝亮 王小平 |
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| 作者单位： | 华中农业大学植物科学技术学院,湖北省昆虫资源利用与害虫可持续治理重点实验室,武汉,430070
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| 基金项目： | 华中农业大学科研启动项目，湖北省科技攻关课题 |
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| 摘 要： | 为比较二化螟越冬幼虫种群内耐寒性的差异,根据体重将二化螟越冬幼虫分为高、中、低三个年龄段,于2008年1月至3月测定了各年龄段越冬幼虫的过冷却点和结冰点,并分析了其耐寒性的生理生化机制.结果表明:在1、2和3月的三次测定中,高龄幼虫的过冷却点在2月最高,为-9.81℃,中龄幼虫的过冷却点逐渐升高,2月份为-13.35 ℃,而低龄幼虫在2月最低,为-15.64℃,且显著低于高龄幼虫;同一月份,低龄越冬幼虫的含水量和甘油含量最高,中龄越冬幼虫次之,而高龄越冬幼虫最低,且差异显著.
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| 关 键 词： | 二化螟 越冬幼虫 过冷却点 含水量 甘油 |
| 收稿时间： | 7/8/2008 12:00:00 AM |
Cold hardiness of overwintering larvae of Chilo suppressalis at different ages |
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| Xu Shu,Zhou Xingmiao,Zeng Jun,Lei Chaoliang and Wang Xiaoping.Cold hardiness of overwintering larvae of Chilo suppressalis at different ages[J].Acta Phytophylacica Sinica,2009,36(1):11-15. |
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| Authors: | Xu Shu Zhou Xingmiao Zeng Jun Lei Chaoliang and Wang Xiaoping |
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| Institution: | College of Plant Science and Technology, Huazhong Agricultural University; Key Laboratory of Insect Resources Utilization and Sustainable Pest Management of Hubei Province, Wuhan 430070, Hubei Province, China;College of Plant Science and Technology, Huazhong Agricultural University; Key Laboratory of Insect Resources Utilization and Sustainable Pest Management of Hubei Province, Wuhan 430070, Hubei Province, China;College of Plant Science and Technology, Huazhong Agricultural University; Key Laboratory of Insect Resources Utilization and Sustainable Pest Management of Hubei Province, Wuhan 430070, Hubei Province, China;College of Plant Science and Technology, Huazhong Agricultural University; Key Laboratory of Insect Resources Utilization and Sustainable Pest Management of Hubei Province, Wuhan 430070, Hubei Province, China;College of Plant Science and Technology, Huazhong Agricultural University; Key Laboratory of Insect Resources Utilization and Sustainable Pest Management of Hubei Province, Wuhan 430070, Hubei Province, China |
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| Abstract: | |
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| Keywords: | Chilo suppressalis overwintering larvae supercooling point water content glycerol |
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