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外源一氧化氮供体硝普钠(SNP)对巴西蕉幼苗抗旱性的影响

作  者:
徐缓;吴岚芳;黄绵佳
单  位:
海南大学园艺园林学院
关键词:
巴西蕉;硝普钠(SNP);干旱胁迫
摘  要:
研究不同浓度一氧化氮供体硝普钠(SNP)处理对土壤水分胁迫下巴西蕉幼苗生理特性影响的结果表明:4个SNP处理浓度(0.05mmol/L,0.1mmol/L,0.5mmol/L,1.0mmol/L)均能显著降低干旱条件下巴西蕉幼苗叶片的相对电导体率及MDA含量,提高叶片相对含水量、脯氨酸含量及SOD活性,从而提高巴西蕉幼苗的抗旱性。综合表现来看,以0.5mmol/L的处理浓度效果最佳。
译  名:
Effects of Exogenous Nitric Oxide Donor SNP on Drought Resistance of Brazilian Banana Seedlings
作  者:
Xu Huan Wu Lanfang Huang Mianjia(College of Horticulture and Landscape,Hainan University,Danzhou 571707,China)
关键词:
Musa AAA Giant Cavendish cv Brazil;Sodium nitroprusside(SNP);Drought resistance
摘  要:
In this study,effects of sodium nitroprusside(SNP,an exogenous nitric oxide donor) on seedling physiological characteristics of banana cultivar" Brazil"(Musa AAA Cavendish) under varying soil water stress were investigated.The results showed that four SNP treating concentrations including 0.05 mmol/L,0.1 mmol/L,0.5 mmol/ L and 1.0 mmol/L could all reduce the relative conductivity and the content of malondialdehyde(MDA) in plant leaves,and increase the leaf relative water content,the content of proline and the activity of superoxide dismutase(SOD) in plant leaves under different drought conditions.It is thus suggested that SNP could improve drought resistance of brazilian banana seedlings,the optimum SNP concentration was expected to be 0.5 mmol/L.

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