| 干旱胁迫对4种观赏草枯叶率及生理指标的影响 |
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| 引用本文： | 李秀玲,刘君,杨志民.干旱胁迫对4种观赏草枯叶率及生理指标的影响[J].草业科学,2010,27(11):26-32. |
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| 作者姓名： | 李秀玲 刘君 杨志民 |
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| 作者单位： | 南京农业大学草坪研究与开发工程技术中心,江苏,南京,210095;广西药用植物园,广西,南宁,530023;南京农业大学草坪研究与开发工程技术中心,江苏,南京,210095 |
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| 基金项目： | 国家科技支撑计划(2006BAD01A19-4-5); 江苏省自然科学基金(BK2009480) |
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| 摘 要： | 以红叶白茅(Imperatacylindrica‘Red Baron’)、花叶芒(Miscanthus sinensis‘Variegatus’)、细茎针茅(Stipatenuissi ma)和金叶苔草(Carexoshi mensis‘Evergold’)4种观赏草为试验材料,进行干旱胁迫处理,分析4种观赏草枯叶率、叶片相对含水量、叶片细胞膜透性、丙二醛(MDA)含量、超氧化物歧化酶(SOD)活性、可溶性蛋白含量、叶绿素含量的变化。结果表明,随着干旱胁迫时间的推进,4种观赏草的细胞膜透性、MDA含量和可溶性蛋白含量不断增加,与枯叶率的增加呈显著正相关;叶片相对含水量、叶绿素含量不断降低,与枯叶率的增加呈显著负相关。比较形态和生理指标后,发现4种观赏草的抗旱性依次为金叶苔草细茎针茅花叶芒红叶白茅。
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| 关 键 词： | 观赏草 耐旱性 枯叶率 |
Effect of drought stress on the percentage of the withered leaves and physiological indexes of four ornamental grasses |
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| LI Xiu-ling,LIU Jun,YANG Zhi-min.Effect of drought stress on the percentage of the withered leaves and physiological indexes of four ornamental grasses[J].Pratacultural Science,2010,27(11):26-32. |
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| Authors: | LI Xiu-ling LIU Jun YANG Zhi-min |
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| Institution: | LI Xiu-ling1,2,LIU Jun1,YANG Zhi-min1(1.Turf Engineering , Technology Center of Nanjing Agricultural University,Jiangsu Nanjing 210095,China,2.Guangxi Botanical Garden of Medicinal Plant,Guangxi Nanning 530020,China) |
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| Abstract: | The experiment was conducted to determine the response of the morphological and physiological parameters of four ornamental grass species Janpanese blood grass(Imperata cylindrical),Variegated miscanthus(Miscanthus sinensis),Finesterm Needlegrass(Stipa tenuissima),'Ever-gold' Sedge(Carex oshimensis)]to drought stress by measuring the percentage of withered leaves,leaf relative water content,leaf relative electrolytic leakage,MDA content,SOD activity,contents of proline and chlorophyll.The results of this s... |
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| Keywords: | ornamental grasses drought tolerance percentage of withered leaves |
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