棉花木炭腐烂的致病剂,Macrophomina phaseolina,生物和化学控制
Ofir Degani1,2, Asaf Gordani1,2, Elhanan Dimant1
1Plants Sciences Department, Migal-Galilee Research Institute, Kiryat Shmona, Israel.
Frontiers in plant science
|October 5, 2023
概括
这项研究探讨了棉花中木炭腐烂病 (CRD) 的绿色控制方法,这种疾病是由Macrophomina phaseolina. 将Trichoderma物种与阿佐克西斯特罗宾 (AS) 结合起来,在作物产量和疾病抑制方面显示出有希望的结果.
科学领域:
- 农业科学 农业科学
- 植物病理学 植物病理学
- 微生物学 微生物学
背景情况:
- 马克罗福米纳 (macrophomina phaseolina) 在棉花中引起木炭腐烂病 (CRD),导致大量的作物损失.
- 目前的CRD控制策略正在转向环保方法,以尽量减少化学物质的影响.
- 开发有效和可持续的CRD控制措施仍然是一个关键的研究目标.
研究的目的:
- 评估不同Trichoderma物种单独或与阿佐克西斯特罗宾 (AS) 结合的疗效,以控制棉花中的CRD.
- 评估这些治疗对棉花生长,产量和病原体DNA水平的影响.
- 研究灌时间在CRD管理中的作用.
主要方法:
- 半场实验使用开放式子和全赛季的商业实地试验.
- 单个Trichoderma物种和AS组合的应用,通过种子修饰和灌.
- 实时PCR用于量化植物根中的病原体DNA.
- 监测作物生长,囊发育和产量参数.
主要成果:
- 在实验中,Trichoderma asperellum (P1) 改善了棉花的生长和产量.
- 与AS结合的Trichoderma longibrachiatum (T7507) 的联合治疗有效地减少了病原体DNA.
- 在商业田里,将Trichoderma物种与代谢物灌的混合物产生了最高的作物产量.
- 早期灌时间显著抑制了疾病的严重程度.
结论:
- 使用Trichoderma和降低AS剂量的组合生物化学方法为CRD控制提供了一个环保和有效的策略.
- 综合性害虫防治策略可以提高作物弹性,降低杀菌剂耐药性.
- 为了可持续的农业,鼓励进一步探索生物和化学处理的结合.
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