| 唐小月,李含韵,陈菲,徐小逊,戚鑫,张世熔.叶面喷施纳米氧化钙对香菜和菠菜镉富集及生理特性的影响[J].农业环境科学学报,2025,44(6):1458-1466. |
| 叶面喷施纳米氧化钙对香菜和菠菜镉富集及生理特性的影响 |
| Effects of foliar spraying calcium oxide nanoparticles on cadmium accumulation and physiological response in coriander and spinach under cadmium stress |
| 投稿时间：2024-08-19 |
| DOI：10.11654/jaes.2024-0693 |
| 中文关键词: 镉 纳米氧化钙 香菜 菠菜 叶面喷施 |
| 英文关键词: cadmium CaONPs coriander spinach foliar spraying |
| 基金项目:四川省科技计划项目（2023YFS0483）；国家现代农业产业技术体系四川油菜创新团队（SCCXTD-2024-3） |
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| 中文摘要: |
| 为确保食品安全，采用田间试验探讨在Cd（0.526 mg·kg-1）污染背景下，叶面喷施3种浓度（25、100、400 mg·L-1）纳米氧化钙溶液（CaONPs）对香菜和菠菜的Cd富集特征和生理特性的影响。结果表明，叶面喷施不同浓度CaONPs对香菜和菠菜地上部Cd含量的降幅更大，最大降幅分别为35.21%和43.34%。在400 mg·L-1 CaONPs叶面处理下两种蔬菜Cd转运系数分别下降23.60%和21.64%。喷施CaONPs也使香菜和菠菜鲜质量和叶绿素b含量显著增加（P<0.05）。当CaONPs喷施浓度达到200 mg·L-1后，两种蔬菜的丙二醛含量均显著降低（P<0.05），其中菠菜丙二醛含量降幅更大。此外，不同浓度CaONPs叶面处理下两种蔬菜中超氧化物歧化酶、过氧化氢酶、过氧化物酶、抗坏血酸过氧化物酶的活性也有不同程度的提高，其中菠菜中过氧化物酶活性的升幅最大，达到37.60%。研究表明，叶面喷施CaONPs抑制了菠菜和香菜对Cd的吸收和转运，积极调节了Cd胁迫下两种植物的生理生化响应。 |
| 英文摘要: |
| To safeguard food security, this research conducted field trials to investigate the impact of foliar applications of three different concentrations（25, 100, 400 mg · L-1）of nano-calcium oxide（CaONPs）on Cd uptake and the physiological attributes of coriander and spinach in soils contaminated with Cd（0.526 mg · kg-1）. The findings revealed that foliar sprays of varying concentrations of CaONPs significantly decreased the Cd content in the above-ground parts of both coriander and spinach, with the highest reductions reaching 35.21% and 43.34%, respectively. Treatment with 400 mg · L-1 of CaONPs led to a 23.60% and 21.64% decrease in Cd translocation coefficients for the two vegetables. Concurrently, the application of CaONPs notably enhanced the fresh weight and chlorophyll b content in coriander and spinach（P<0.05）. At a spray concentration of 200 mg · L-1 of CaONPs, the malondialdehyde（MDA）content in both vegetables was significantly decreased（P<0.05）, with spinach exhibiting a more pronounced reduction. Furthermore, the activities of superoxide dismutase, catalase, peroxidase, and ascorbate peroxidase in these vegetables were variously augmented under different CaONPs concentrations. Notably, spinach showed the most significant increase in peroxidase activity, up to 37.60%. In summary, the foliar application of CaONPs effectively curtailed the uptake and translocation of Cd in coriander and spinach, and modulated their physiological and biochemical responses under Cd stress. |
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