推拉插入作物Desmodium不排斥,但拦截和杀死害虫
Anna L Erdei1,2, Aneth B David1,3, Eleni C Savvidou1,4
1Department of Plant Protection Biology, Swedish University of Agricultural Sciences, Alnarp, Sweden.
eLife
|March 13, 2024
概括
推拉拉的农业战略.
科学领域:
- 农业科学 农业科学
- 生态生态学 生态生态学
- 昆虫学 昆虫学是一门学科.
背景情况:
- 推拉交叉作物系统使用驱逐植物 (推) 和吸引植物 (拉) 来控制玉米中的害虫.
- 这一策略被认为是通过通过中间作物释放的挥发性化学物质来驱逐成年害虫,通常是Desmodium spp.
研究的目的:
- 调查推拉策略对玉米中虫害的有效性背后的机制.
- 为了确定挥发性类是否是Desmodium-玉米交叉作物系统中的主要威因素.
主要方法:
- 在各种条件下由Desmodium释放的挥发性化合物的分析.
- 使用入侵性害虫Spodoptera frugiperda在风洞中的卵位选择测试.
- 在Desmodium植物上进行了幼虫生存和发育测试.
主要成果:
- 在Desmodium头部空间中没有检测到挥发性类物质,成年没有表现出对有或没有Desmodium气味的玉米的偏好.
- 新生幼虫更喜欢Desmodium而不是玉米,但没有幸存下来,老幼虫被酸盐强化的三合体刺穿.
- 德斯莫迪似乎拦截和杀死分散的幼虫,而不是阻止成年害虫.
结论:
- 推拉策略的害虫控制机制依赖于Desmodium的幼虫拦截,而不是通过挥发性化合物阻止成年人.
- 了解这种机制对于改进推拉系统和将该概念应用于其他作物系统至关重要.
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