| 明尼苏达被毛孢代谢物对大豆胞囊线虫二龄幼虫的影响 |
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| 引用本文： | 钱洪利,许艳丽,孙玉秋,李春杰.明尼苏达被毛孢代谢物对大豆胞囊线虫二龄幼虫的影响[J].大豆科学,2009,28(1). |
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| 作者姓名： | 钱洪利 许艳丽 孙玉秋 李春杰 |
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| 作者单位： | 1. 东北林业大学生命科学学院,黑龙江哈尔滨,150040;中国科学院东北地理与农业生态研究所,黑龙江哈尔滨,150081
2. 中国科学院东北地理与农业生态研究所,黑龙江哈尔滨,150081 |
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| 基金项目： | 土壤与农业可持续发展国家重点实验室课题，国家科技支撑计划 |
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| 摘 要： | 明尼苏达被毛孢是大豆胞囊线虫幼虫专性寄生真菌,是一类具有潜力的线虫生防资源.为了探讨明尼苏达被毛孢对大豆胞囊线虫的生防作用机制,实验室条件下,研究了明尼苏达被毛孢1-10代谢物原液及不同稀释液对大豆胞囊线虫二龄幼虫(J2)活性的影响和J2对大豆根浸出液及大豆根的趋性.结果表明:代谢物原液及其不同稀释度可以显著抑制J2活性,24 h时原液、5×、10×、20×和50 x对J2致死率分别为91%、75%、50%、36%和31%,显著高于无菌水对照7.2%,且J2致死率随时间的延长而逐渐提高;J2在1-10代谢物最近处0～1 cm分布率最低,表明J2对1-10代谢物存在趋避性;J2在根浸出液最近处0～1 cm分布率最高,表明J2对根浸出液存在趋向性;在距处理液0～1 cm,J2对根浸出液/1-10代谢物混合液趋避性仍然十分明显;大豆幼根蘸代谢物影响下J2在距豆根0～1 cm分布率低于无菌水处理的幼根,且差异显著,说明1-10代谢物可以降低J2对大豆根的趋向性.
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| 关 键 词： | 明尼苏达被毛孢 代谢物 大豆胞囊线虫 二龄幼虫 趋向性 |
Effects of Hirsutella Minnesotensis Metabolites on Soybean Cyst Nematode Juvenile |
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| QIAN Hong-li,XU Yan-li,SUN Yu-qiu,LI Chun-jie.Effects of Hirsutella Minnesotensis Metabolites on Soybean Cyst Nematode Juvenile[J].Soybean Science,2009,28(1). |
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| Authors: | QIAN Hong-li XU Yan-li SUN Yu-qiu LI Chun-jie |
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| Institution: | QIAN Hong-li1,2,XU Yan-li2,SUN Yu-qiu2,LI Chun-jie2(1College of Life Sciences,Northeast Forestry University,Harbin 150040,Heilongjiang,2 Northeast Institute of Geography , Agroecology,Harbin 150081,China) |
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| Abstract: | As an fungal endoparasites of soybean cyst nematodes(SCN)juvenile,Hirsutella minnesotensis was a potential biological control agent.To discuss the mechanism of Hirsutella minnesotensis on SCN,the effect of Hirsutella minnesotensis 1-10 metabolites at the original and different dilute solution on second stage juveniles(J2)mortality and its effect on the attraction of J2 to soybean root diffusate or soybean root on agar plate was investigated.It was deduced that both the original and different dilute solution... |
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| Keywords: | Hirsutella minnesotensis Metabolites Soybean cyst nematode Second stage juveniles Tendency |
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