| 苜蓿籽蜂越冬虫态对温度的敏感性 |
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| 引用本文： | 刘长月,赵莉,倪亦非.苜蓿籽蜂越冬虫态对温度的敏感性[J].草业科学,2013,30(2):281-286. |
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| 作者姓名： | 刘长月 赵莉 倪亦非 |
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| 作者单位： | 新疆农业大学农学院新疆草地资源与生态重点实验室,新疆乌鲁木齐,830052;新疆蝗虫鼠害测报防治站,新疆乌鲁木齐,830001 |
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| 基金项目： | 现代农业产业技术体系建设专项，公益性行业(农业)项目 |
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| 摘 要： | 本研究将当年收获的苜蓿（Medicago sativa）种子储存于4个温度条件下，采用定期剖种的方法，调查苜蓿籽蜂（Bruchophagus roddi）的越冬虫态及其存活情况。结果表明，苜蓿籽蜂主要以3龄幼虫在苜蓿种子内滞育越冬。10月从田间将苜蓿种子收回，储存温度在18.0 ℃、平均湿度为27.2%（10―12月）时，越冬幼虫于当年12月下旬开始化蛹；储存温度在9.9 ℃，平均湿度为40.1%（10月―次年2月）时，越冬幼虫于次年2月下旬开始化蛹。不同温度和不同时间梯度处理苜蓿种子结果表明，在50 ℃、-30 ℃条件下处理1 d，籽蜂幼虫的死亡率均达100%，苜蓿种子的发芽率分别为93.33%和88.33%。
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| 关 键 词： | 苜蓿籽蜂 越冬幼虫 温度处理 |
A study on sensitivity of over-wintering instars to temperature of alfalfa seed chalcids |
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| LIU Chang yue,ZHAO Li,NI Yi fei.A study on sensitivity of over-wintering instars to temperature of alfalfa seed chalcids[J].Pratacultural Science,2013,30(2):281-286. |
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| Authors: | LIU Chang yue ZHAO Li NI Yi fei |
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| Abstract: | The alfalfa （Medicago sativa）seeds, harvested at the current year, were stored in 4 locations with different temperatures. The alfalfa seed chalcid (Bruchophagus roddi) over wintering instars and its survival were investigated by dissecting the seeds regularly. The results showed that seed chalcid over wintering instars in alfalfa seeds were the third instar larvae. When the average storage temperature and humidity were 18 ℃ and 27.2% (from October to December), the alfalfa seed chalcid overwintering larvae began to pupate at the end of December. When the average storage temperature and humidity were 9.9 ℃ and 40.1% (from October to next February), the over wintering larvae began to pupate at the next February. Alfalfa seeds being treated with the conditions of 50 ℃ and -30 ℃ for 1 day showed that the mortality of alfalfa seed chalcid larvae reached 100%; and germination rates of the alfalfa seeds were 93.33% and 88.33%, respectively. |
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| Keywords: | alfalfa seed chalcid over wintering larvae temperature treatment |
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