XIAN Kai-mei,LIU Hui-ying.Effect of Different Nitrogen Levels on the Several Physiological Indicators and Reactive Oxygen Removal System of Color Pepper[J].Northern Horticulture,2015,39(04):17-21.[doi:10.11937/bfyy.201504004]
不同氮素水平对彩椒几项生理指标及活性氧清除系统的影响
- Title:
- Effect of Different Nitrogen Levels on the Several Physiological Indicators and Reactive Oxygen Removal System of Color Pepper
- 文献标志码:
- A
- 摘要:
- 对无土栽培温室彩椒进行2.5、5.0、10.0（CK）、15.0、20.0 μmol/L（以下用N2.5、N5.0、N10.0、N15.0和N20.0表示）5个不同水平的氮素处理，测定几项生理指标（电解质渗透率、可溶性糖、脯氨酸、可溶性蛋白质、丙二醛含量）及活性氧清除系统（还原型谷胱甘肽、抗坏血酸含量、过氧化氢酶、超氧化物歧化酶及过氧化物酶活性）等参数指标，为彩椒的无土栽培管理技术提供较为科学的参考依据。结果表明：氮素5.0~15.0 μmol/L浓度范围内，还原型谷胱甘肽、抗坏血酸含量及抗氧化酶活性较高，电解质渗透率、丙二醛含量较低且均以N15.0处理的表现最高（即植株抗氧化能力最强）；其次是N10.0和N5.0处理；N2.5处理的最低，表明该水平处理的植株抗氧化能力最差；而当施氮量为2.5 μmol/L或20.0 μmol/L时，植株均生长不良、产量及植物膜的完整性降低、体内抗氧化物质含量低且膜质过氧化程度加剧。
- Abstract:
- For soilless cultivation of greenhouse pepper 2.5，5.0，10.0 (CK)，15.0 and 20.0 μmol/L (the following N2.5，N5.0，N10.0，N15.0 and N20.0) five different levels of nitrogen treatment were set，to measure several physiological indexes (electrolyte permeability，soluble sugar，proline，soluble protein and malondialdehyde content) and active oxygen removal system (reduced glutathione，ascorbic acid content，catalase，superoxide dismutase (SOD) and peroxidase (POD) activity) parameter indicators and so on，in order to provide reference for soilless cultivation management for color pepper.The results showed that in the 5.0-15.0 μmmol/L concentration，reduced glutathione,ascorbic acid content and antioxidant enzyme activity were higher，electrolyte permeability and malondialdehyde content were lower and were the highest under N15.0 treatment (performance (plant) the strongest antioxidant capacity)，followed by N10.0 and N5.0 processing，the lowest was N2.5 processing，it showed that the level of plant antioxidant capacity in this processing was the worst.When the application rate was 2.5 μmol/L or 20 μmol/L，the plant growth，yield and plant membrane integrity，content of antioxidants in the body decreased and membranous peroxide degree increased.
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备注/Memo
第一作者简介：鲜开梅（1981-），女，新疆人，硕士，助理研究员，研究方向为设施园艺。E-mail：condyxkm@126.com.