| NaCl胁迫对茄子幼苗生长和光合特性的影响 |
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| 引用本文： | 吴雪霞,张永平,查丁石.NaCl胁迫对茄子幼苗生长和光合特性的影响[J].浙江农业学报,2010,22(2). |
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| 作者姓名： | 吴雪霞 张永平 查丁石 |
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| 作者单位： | 上海市农业科学院,园艺研究所,上海市设施园艺技术重点实验室,上海,201106 |
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| 摘 要： | 以‘沪茄08-11’为材料,研究了不同浓度NaCl胁迫对茄子幼苗生长、光合作用、脯氨酸和可溶性糖含量的影响。结果表明,NaCl胁迫下,茄子幼苗株高、茎粗、地上部鲜重和根系鲜重,叶片中叶绿素含量均降低,且NaCl浓度越高,下降幅度越大;叶片中净光合速率(Pn)、气孔导度(Gs)、胞间CO2浓度(Ci)和蒸腾速率(Tr)均随NaCl浓度的升高而显著降低,气孔限制值(Ls)随NaCl浓度升高显著增加,水分利用率(WUE)随NaCl浓度升高呈先增加后降低的趋势;叶片脯氨酸和可溶性糖含量均随NaCl浓度升高而显著增加。以上结果说明,NaCl胁迫抑制了茄子幼苗生长和光合作用,且盐胁迫下Pn下降的主要原因是气孔因素限制。
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| 关 键 词： | NaCl胁迫 茄子 生长 光合特性 |
Effect of NaCl stress on growth and photosynthetic characteristics of eggplant seedlings |
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| WU Xue-xia,ZHANG Yong-ping,ZHA Ding-shi.Effect of NaCl stress on growth and photosynthetic characteristics of eggplant seedlings[J].Acta Agriculturae Zhejiangensis,2010,22(2). |
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| Authors: | WU Xue-xia ZHANG Yong-ping ZHA Ding-shi |
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| Institution: | WU Xue-xia,ZHANG Yong-ping,ZHA Ding-shi* (Horticultural Research Institute,Shanghai Academy of Agricultural Sciences,Shanghai Key Laboratory of Protected Horticultural Technology,Shanghai 201106,China) |
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| Abstract: | Effects of different concentrations of NaCl on plant growth,photosynthetic characteristics,contents of proline and soluble sugar of eggplant (Solanum melongena L.)seedlings of 'Huqie 08-11' were studied.The results showed that with increasing NaCl concentration,the plant height,stem diameter,shoot fresh weight,root fresh weight and contents of chlorophyll decreased,and net photosynthetic rate (Pn),stomatal conductance (Gs),intercellular CO2 concentration (Ci)and transpiration rate (Tr)decreased significantl... |
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| Keywords: | NaCl stress eggplant growth photosynthetic characteristics |
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