| 干旱胁迫对野生和栽培蒲公英抗性生理生化指标的影响 |
| |
| 引用本文： | 吴嘉雯,王庆亚.干旱胁迫对野生和栽培蒲公英抗性生理生化指标的影响[J].江苏农业学报,2010,26(2). |
| |
| 作者姓名： | 吴嘉雯 王庆亚 |
| |
| 作者单位： | 南京农业大学生命科学学院,江苏,南京,210095 |
| |
| 基金项目： | 江苏省物种资源调查项目(2008-01) |
| |
| 摘 要： | 以野生和栽培蒲公英为材料,采用PEG(聚乙二醇)溶液模拟土壤干旱的方法,研究了不同浓度PEG溶液对蒲公英叶片含水量、叶绿素含量、质膜透性、保护酶活性以及渗透调节物质的影响。结果表明:野生和栽培蒲公英在抗旱适应性上存在显著差异。随着PEG浓度的增加,野生蒲公英叶片含水量、叶绿素和可溶性蛋白含量的下降幅度,质膜透性、抗氧化酶活性、游离脯氨酸以及可溶性糖含量的上升程度均小于栽培蒲公英,对干旱环境的适应性强于栽培品种,具有较强的抗旱能力。
|
| 关 键 词： | 野生蒲公英 栽培蒲公英 PEG胁迫 抗旱性 生理生化 |
Effects of PEG Stress on Resistance Physiological and Biochemical Indexes of Wild and Cultivated Taraxacum mongolicum |
| |
| WU Jia-wen,WANG Qing-ya.Effects of PEG Stress on Resistance Physiological and Biochemical Indexes of Wild and Cultivated Taraxacum mongolicum[J].Jiangsu Journal of Agricultural Sciences,2010,26(2). |
| |
| Authors: | WU Jia-wen WANG Qing-ya |
| |
| Institution: | College of Life Sciences/a>;Nanjing Agricultural University/a>;Nanjing 210095/a>;China |
| |
| Abstract: | Wild and cultivated Taraxacum mongolicum were used as materials to study the effects of different PEG concentrations on the indexes as leaf water content,chlorophyll content,relative permeability of plasma,protective enzymes activities and osmotic adjustment substances in drought soils simulated by PEG stress.The results showed the significant difference between the two type materials in drought adaptability.With the increase of PEG concentrations,wild type was less than cultivated in the indexes such as th... |
| |
| Keywords: | wild Taraxacum mongolicum cultivated Taraxacum mongolicum PEG stress drought resistance physiology and biochemistry |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
