| 盐胁迫下赤霉素对黄瓜种子萌发及幼苗生长的影响 |
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| 引用本文： | 李翊华,陈修斌,王燕慧,刘立平,张东莲.盐胁迫下赤霉素对黄瓜种子萌发及幼苗生长的影响[J].西北农业学报,2014,23(9):207-210. |
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| 作者姓名： | 李翊华 陈修斌 王燕慧 刘立平 张东莲 |
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| 作者单位： | （河西学院 农业与生物技术学院，甘肃张掖 734000） |
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| 基金项目： | 甘肃省河西走廊特色资源利用省级重点实验室项目（XZ1205）。 |
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| 摘 要： | 研究外源GA3对盐胁迫下黄瓜种子萌发和幼苗生长的影响。结果表明,添加不同质量浓度GA3的各处理,其发芽率、发芽势和发芽指数均显著高于NaCl胁迫处理,其中以100mg/L GA3处理的发芽势、发芽率和发芽指数最高,幼苗的叶面积、根长、根冠比也最大,同时叶片中叶绿素含量最高,幼苗叶片的光合速率(Pn)、气孔导度(Gs)、胞间CO2摩尔分数(Ci)及蒸腾速率(Tr)等均达到最大;而当赤霉素的质量浓度为50mg/L时,叶片中的POD活性为2 005U/(g·min),达最大值。
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| 关 键 词： | 盐胁迫 赤霉素 黄瓜种子萌发 幼苗生长 |
Effects of GA3 on Seed Germination and Seedling Growth of Cucumber under Salt Stress |
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| LI Yihu,CHEN Xiubin,WANG Yanhui,LIU Liping and ZHANG Donglian.Effects of GA3 on Seed Germination and Seedling Growth of Cucumber under Salt Stress[J].Acta Agriculturae Boreali-occidentalis Sinica,2014,23(9):207-210. |
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| Authors: | LI Yihu CHEN Xiubin WANG Yanhui LIU Liping and ZHANG Donglian |
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| Abstract: | The effect of exogenous GA3 on cucumber seed germination and seedling growth was studied under the condition of salt stress. The results showed that: the germination rate, germination potential and germination index were significantly higher in the treatments of supplying different concentrations of GA3 than in the NaCl stress treatment only. In the treatment of 100mg/L GA3 supplication, the highest values of the germination potential, germination potential, germination index, seedling leaf area, root length, root /shoot ratio, the chlorophyll content in the leaves of seedlings, the leaf photosynthetic rate (Pn), stomatal conductance (Gs), intercellular CO2 molality fraction (Ci) and transpiration rate (Tr) numerical index were obtained; however, the maximum value, 2 005 U/(g·min), of POD activity in leaves were detected in the treatment of 50 mg/L GA3. |
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| Keywords: | Salt stress GA3 Cucumber seed germination Seedling growth |
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