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改善玉米干旱耐受性,通过在叶子上涂抹化量子点

Venkatesan Kishanth Kanna¹, Maduraimuthu Djanaguiraman¹, Alagarswamy Senthil¹

¹Department of Crop Physiology, Tamil Nadu Agricultural University, Coimbatore, India.

Frontiers in plant science

|December 20, 2024

概括

化量子点 (ZnSe QDs) 可以帮助玉米作物抵御干旱. 在干旱条件下,ZnSe QDs的叶子应用改善了光合作用,抗氧化活性和种子产量,同时减少了玉米植物在干旱条件下的氧化应激.

科学领域:

农业科学农业科学
植物生理学植物生理学
纳米技术纳米技术

背景情况:

玉米 (Zea mays L.) 在干旱/半干旱地区至关重要,但容易受到干旱引起的产量损失.
干旱压力的氧化损害对玉米的繁殖和谷物产量产生了负面影响.
氧化物和氧化物纳米颗粒显示出抗氧化潜力,但ZnSe QDs的干旱缓解效应未得到量化.

研究的目的:

为了量化化量子点 (ZnSe QDs) 的毒性.
评估ZnSe QDs在玉米中的干旱缓解潜力.
评估在有限的土壤水分下对透气,光合作用,氧化剂生产,抗氧化酶和种子产量的影响.

主要方法:

对ZnSe QDs (0-500 mg L-1) 对地和阿佐拉的毒性评估.
干旱压力实验使用叶子喷雾处理:水,ZnSe QDs (20 mg L-1),硫酸盐/酸盐组合.
测量包括透气率,光合作用率,过氧化含量,酶和过氧化酶活性以及种子产量.

主要成果:

高达20毫克L-1的ZnSe QDs对地和阿佐拉没有毒性.
在干旱期间,ZnSe QDs和Se应用通过在干旱期间部分关闭胃口来减少透气.
ZnSe QDs (20 mg L-1) 显著增强了光合作用率 (25%),催化酶 (98%) 和过氧化酶 (85%) 的活性,同时减少了过氧化 (23%).
与喷水相比,ZnSe QDs通过增加每种子的种子量 (42%) 增加了种子产量 (26%).

结论:

对ZnSe QDs (20 mg L-1) 的叶子应用有效地减轻了玉米中干旱引起的影响.
ZnSe QDs延缓叶子过早衰老,并在雨天条件下保护玉米产量.
ZnSe QDs为提高作物对干旱压力的抵抗力提供了一个有希望的方法.

关键词:

干旱干旱干旱干旱玉米玉米玉米是一种纳米复合材料的复合材料光合作用光合作用.声管导电性声管导电性声管导电性

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