氧化和压在卜:对生长,生理和根质量的影响
Juliane Maciel Henschel1, Thiago Jardelino Dias1,2, Vitória Stefany de Moura2
1Programa de Pós-Graduação em Agronomia, Universidade Federal da Paraíba, Areia, PB 58397-000 Brasil.
概括
外源性过氧化 (H2O2) 应用并没有减轻卜植物的盐应激. 虽然盐应激影响了生长和生理,但H2O2在盐水条件下并没有改善卜的质量.
科学领域:
- 植物生理学 植物生理学
- 农业科学 农业科学
- 生物化学 生化学
背景情况:
- 盐应激是一种主要的非生物应激,影响全球作物产量.
- 已知过氧化 (H2O2) 可以减轻盐的压力,并改善一些植物物种的收获后质量.
- 在盐应激下,H2O2对卜的影响以前没有被研究过.
研究的目的:
- 为了评估外源H2O2应用在减轻卜中的盐应激中的有效性.
- 评估H2O2对卜生长,生理参数和在盐水条件下收获后质量的影响.
主要方法:
- 卜植物受到非盐水或盐水 (120mM NaCl) 的条件.
- 通过叶子喷,植物接受了不同度的H2O2 (0,150或1500微米) 的处理.
- 测量包括生长参数,气体交换,光化学效率,相对水含量,电解质泄漏,色素含量和收获后的根属性.
主要成果:
- 盐应激通过减少气体交换和增加电解质泄漏,对卜生长产生了负面影响.
- 矛盾的是,盐压力通过增加抗氧化剂,如安东素,可溶性固体和维生素C来改善球状根质量.
- 外源的H2O2并没有减轻盐应激对卜生长,光合作用能力或氧化损害的影响;它在盐应激下降了维生素C.
结论:
- 外源的H2O2应用在减轻卜中的盐应激方面是无效的.
- 在盐应激条件下,H2O2不会改善卜的生长或收获后质量.
- 可能需要进一步的研究来探索替代策略,以管理卜中的盐应激.
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