圆盖阴石蕨对水分胁迫的生理响应 |
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引用本文: | 梁晓华,丁青霞,徐成东. 圆盖阴石蕨对水分胁迫的生理响应[J]. 广东农业科学, 2014, 41(9): 51-53,68 |
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作者姓名: | 梁晓华 丁青霞 徐成东 |
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作者单位: | 1.楚雄师范学院化学与生命科学系,云南楚雄675000;2.滇中高原生物资源开发与利用研究所,云南楚雄675000 |
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基金项目: | 国家自然科学基金(31260095 |
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摘 要: | 以圆盖阴石蕨为试验材料,采用聚乙二醇6000 (PEG6000)人工模拟干旱胁迫,研究不同浓度的PEG6000 渗透胁迫对圆盖阴石蕨的叶片形态、游离脯氨酸含量、可溶性糖含量、POD 活性、相对电导率的影响。结果表明院浓度为10%、20%和30%的PEG6000 渗透胁迫后,圆盖阴石蕨形态均受到不同程度损害,且表现为30%的PEG6000 渗透胁迫受损最严重,叶片干枯卷缩最厉害。游离氨基酸含量、可溶性糖含量、POD 活性、相对电导率均与胁迫浓度呈正相关。
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关 键 词: | 圆盖阴石蕨;水分胁迫;生理响应 |
Physiological response of Humata tyermanni to water stress |
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Abstract: | The effects of osmotic stress of polyethylene glycol 6000 (PEG6000) with different concentrations on theleaf morphology, free proline content, soluble sugar content, POD activity and relative electric conductivity of Humatatyermanni were studied, using PEG6000 to manual simulated drought stress. The results showed that osmotic stress of 10%,20% and 30% PEG6000 caused different degrees of damage to the plant morphology, the injury effect of 30% PEG6000was most severe and the leaf withered seriously. Besides, the free proline content, soluble sugar content, POD activity,relative electric conductivity were postively correlated with stress concentration. |
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Keywords: | Humata tyermanni water stress physiological response |
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