| Cu~(2+)胁迫对香菇草生长和生理生化特性的影响 |
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| 引用本文： | 邹晓云,向华,于晓英.Cu~(2+)胁迫对香菇草生长和生理生化特性的影响[J].天津农业科学,2011,17(1):22-24. |
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| 作者姓名： | 邹晓云 向华 于晓英 |
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| 作者单位： | 1. 湖南新化县第一职业中学,湖南新化,417600
2. 湖南农业大学园艺园林学院,湖南长沙,410128 |
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| 基金项目： | 铁道部科技开发计划项目 |
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| 摘 要： | 为了探讨香菇草对Cu~(2+)胁迫的响应机制及其对Cu~(2+)的吸收特性,通过营养液盆栽试验研究了不同浓度Cu~(2+)(0,2,6,10,14mg·L~(-1))对香菇草的生长及生理特性的影响。研究结果表明:(1)随着Cu~(2+)浓度的增加,香菇草的形态变化明显,生长受到一定的抑制。(2)随着Cu~(2+)处理浓度和处理时间的增加,香菇草叶片细胞膜透性和MDA含量急剧上升。但在第21天,Cu~(2+)超过6mg·L~(-1)的浓度时,香菇草的细胞膜透性和MDA含量呈下降趋势,SOD酶活性总体上呈现升高后降低的趋势。(3)Cu~(2+)在香菇草根、茎、叶内的含量随处理浓度的增加而增加,尤其是在根中的积累量最大,处理浓度在10 mg·L~(-1)时根内含量达到最高值,几乎是茎、叶含量的20～30倍。
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| 关 键 词： | 香菇草 Cu~(2+) 胁迫 生理生化特性 |
Effects of Cu2+ Stress on the Growth and Physiological and Biochemical Characteristics of Hydrocotyle vulgaris |
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| ZOU Xiao-yun,XIANG Hua,YU Xiao-ying.Effects of Cu2+ Stress on the Growth and Physiological and Biochemical Characteristics of Hydrocotyle vulgaris[J].Tianjin Agricultural Sciences,2011,17(1):22-24. |
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| Authors: | ZOU Xiao-yun XIANG Hua YU Xiao-ying |
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| Institution: | ZOU Xiao-yun~1,XIANG Hua~2,YU Xiao-ying~2 (1.The First Vocational Middle School of Xinhua County of Hunan Province,Xinhua,Hunan 417600,China,2.College of Horticulture and Landscape,Hunan Agricultural University,Changsha,Hunan 410128,China) |
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| Abstract: | In order to research the mechanisms of response to Cu~(2+) stress and absorption characteristics of Cu~(2+) in Hydrocotyle vulgaris, using potted plants as materials,the effects of Cu~(2+) stress on the growth and physiological and biochemical characteristics of Hydrocotyle vulgaris were studied.The results showed that,(1)with the Cu~(2+)concentration increasing,the morphological changes of Hydrocotyle vulgaris were obvious,it's growth inhibited.(2) With the Cu~(2+)concentration increasing,the membrane perm... |
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| Keywords: | Cu2+ |
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