耐受性 的 Hymenaea stigonocarpa 马特. 前海恩. 在这里. 为了草甘酸盐
G S Faria1, L Carlos1, S C Vasconcelos-Filho2
1Instituto Federal Goiano, Programa de Pós-graduação em Ciências Agrárias - Agronomia, Rio Verde, GO, Brasil.
Brazilian journal of biology = Revista brasleira de biologia
|October 9, 2024
概括
黑树 (Hymenaea stigonocarpa) 对除草剂草甘具有耐受性,尽管有限制吸收的解剖学适应,但毒性最小. 低剂量甚至可以刺激植物生长,这表明有抑制作用.
科学领域:
- 植物科学 植物科学
- 农业学是一种农业学.
- 抗除草剂耐药性 抗除草剂耐药性
背景情况:
- 黑斑 (Hymenaea stigonocarpa) 具有厚厚的皮质和特定的解剖特征,可能会限制除草剂的吸收.
- 了解植物对除草剂的反应对于可持续农业和杂草管理至关重要.
研究的目的:
- 为了测试Hymenaea stigonocarpa对草甘耐药性的假设.
- 为了评估H. stigonocarpa对不同的草甘度的解剖学,生理学和生长反应.
主要方法:
- 植物暴露于不同剂量的草甘 (0960 g a.e ha-1).
- 评估包括视觉症状,植物解剖学,生长参数和生理测量 (光合作用,透气,光化学潜力).
- 进行了血清化学测试,以检测氧化应激和粉积累.
主要成果:
- 草甘对植物的高度和叶数产生了负面影响,导致光合作用能力下降.
- 作为补偿机制,植物将资源投入到茎直径增长中.
- 在测试度下没有观察到视觉毒性症状,氧化应激或碳水化合物转位受损.
- 低剂量的草甘 (96和240克/ha-1) 显示出抑制作用,增强生长和生理反应.
结论:
- 黑树 (Hymenaea stigonocarpa) 对草甘具有显著的耐受性,这与其解剖学适应性相一致.
- 在低剂量下观察到的抑制效应表明增长刺激的潜在应用.
- 对H. stigonocarpa的耐受性和霍尔梅西斯机制的进一步研究是有必要的.
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