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外源性黑素通过减轻氧化损害,提高了果 (Mangifera indica L.) 的水分应激耐受性

Ajaya Kumar Trivedi¹, Sushil Kumar Shukla¹, Ghanshyam Pandey¹

¹ICAR - Central Institute for Subtropical Horticulture, Lucknow, India.

Physiologia plantarum

|October 10, 2024

概括

黑激素的叶子应用有效地减轻了果树的水分压力,显著提高了水果产量和质量. 这种可持续的方法增强了抗氧化剂系统,这对于在干旱期间管理作物损失至关重要.

科学领域:

园艺园艺园艺园艺
植物生理学植物生理学
农业科学农业科学

背景情况:

亚热带果生产面临着巨大的经济损失,原因是水果发育过程中短暂的水分压力.
这种压力增加了氧化损伤,对水果产量和质量产生了负面影响.
需要可持续的战略来管理水分压力,并确保持续的果收获.

研究的目的:

评估外源性黑激素在缓解果树的水分压力的有效性.
为了确定最佳度和应用时间的黑激素管理氧化应激.
评估黑激素对水果产量,质量和植物抗氧化系统的影响.

主要方法:

在三年内向16岁的果树涂抹不同度的黑激素 (20150μM).
在三个关键的水果发育阶段 (大理石,蛋,成熟水果) 进行了治疗.
测量包括水果产量,水果等级,叶子中的叶绿素含量和抗氧化酶活性.

主要成果:

黑素治疗显著减少了产量损失,从55.94% (未经治疗) 降至7.5%在水分压力下.
与未经处理的压力树相比,黑素的应用增加了"A"等级水果的比例.
叶绿素含量和抗氧化酶活动受到黑激素的有利调节,接近灌树的水平.

结论:

黑激素的叶子应用,特别是在150μM,是一种可行的和可持续的方法,用于管理果中的过渡性水分压力.
黑色素增强了果树的抗氧化防御系统,保护它免受氧化损伤并提高产量.
这一战略为改善水资源稀缺的亚热带地区果生产的可持续性提供了一个有希望的解决方案.

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