围的特点如何改变Pseudocercospora fijiensis propagules的扩散情况?
Lucile Delatouche1,2,3,4,5, Philippe Tixier2,3,6, Jérôme Sainte-Rose1
1CIRAD, UPR GECO, Le Lamentin, France.
Pest management science
|November 9, 2023
概括
可以作为农业中真菌病传播的障碍. 这项研究表明,围树的特性,如多孔性,显著减少了黑叶条纹病 (BLSD) 在香植物中的传播.
科学领域:
- 农业生态学 农业生态学
- 植物病理学 植物病理学
- 生态生态学 生态生态学
背景情况:
- 树被公认为具有害虫控制功能,但在控制空中真菌病方面未得到充分利用.
- 由Pseudocercospora fijiensis引起的黑叶串状病 (BLSD) 是香生产的一个主要威胁.
- BLSD 子 (ascospore 和 conidia) 的分散是疾病传播的关键因素.
研究的目的:
- 调查和量化对对BLSD子散播的影响.
- 评估围作为防止真菌病传播的障碍物的有效性.
- 为了确定树的特征如何影响子拦截.
主要方法:
- 使用陷植物的实验设置,放置在带有围屏障的人工注射源附近.
- 对陷植物每日病变密度的量化.
- 对树特征 (高度,宽度,光学孔隙性) 的分析,以测量子拦截能力.
主要成果:
- 具有更高拦截能力的对冲可以将ascospore驱动的BLSD病变密度降低高达50%.
- 低杆孔隙性显著降低了虫驱动的病变密度.
- 围侧的亚斯科斯散发显著减少,这表明有异性效应.
结论:
- 这项研究提供了对树限制Pseudocercospora fijiensis分散的第一个实验证据.
- 树的特征对于确定它们在拦截真菌子中的有效性至关重要.
- 杆提供了一个可行的农业生态战略,用于在香种植园管理BLSD.
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