的干旱耐受性通过口腔调节和氧化积累通过氧化纳米颗粒得到增强
Djanaguiraman M1, Vidhya Bharathi K S1, Raghu R2
1Department of Crop Physiology, Tamil Nadu Agricultural University, Coimbatore, 641003, India.
Plant physiology and biochemistry : PPB
|May 18, 2024
概括
氧化物纳米颗粒 (nanoceria) 的叶子应用显著提高了干旱下的作物产量. 纳米通过改善水分保留和保护细胞结构来增强光合作用和生殖特征.
科学领域:
- 农业科学 农业科学
- 植物生理学 植物生理学
- 纳米技术在农业中的应用
背景情况:
- [Sorghum bicolor (L.) Moench]的产量在关键生长阶段受到干旱的显著影响.
- 氧化纳米粒子 (nanoceria) 具有抗氧化特性,在农业中潜力未得到充分利用.
- 的干旱压力与光合作用率降低,水含量降低和有机细胞膜损伤有关.
研究的目的:
- 调查叶子纳米应用对的光合作用率,透气和干旱下的繁殖成功的影响.
- 阐明纳米减轻干旱引起的光合作用和生殖特征抑制的机制.
主要方法:
- 采用了因数完全随机的设计和分割图的设计实验.
- 纳米纤维 (25毫克L-1) 的叶子应用与逐步干燥土壤下的喷水进行了比较.
- 测量包括透气率,组织含水量,相容的溶液积累,光合作用率,酶活性和生殖参数.
主要成果:
- 纳米应用限制了透气,保持了土壤水分,并显示出强大的口腔控制.
- 在干旱期间,通过相容的溶液积累,纳米纤维处理提高了光合作用率19%,组织水含量提高了18%.
- 通过增强的催化酶 (53%) 和过氧化酶 (45%) 活性,Nanoceria保留了质体和甲状腺体膜完整性,减少了过氧化的74%.
- 种子组的百分比 (24%) 和单个种子质量 (27%) 显著改善,导致种子总产量更高.
结论:
- 在25毫克L-1的纳米叶应用有效地减轻了的干旱压力.
- 纳米菌通过增加光合作用,改善水的状态,促进生殖特征来提高谷物产量.
- 在干旱和半干旱环境中,纳米是一种有前途的策略,可以提高作物弹性和生产力.
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