| 外源精胺对盐胁迫下黄瓜幼苗生长和光合作用的影响 |
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| 引用本文： | 袁颖辉,束胜,袁凌云,孙锦,郭世荣. 外源精胺对盐胁迫下黄瓜幼苗生长和光合作用的影响[J]. 江苏农业学报, 2012, 28(4): 835-840 |
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| 作者姓名： | 袁颖辉 束胜 袁凌云 孙锦 郭世荣 |
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| 作者单位： | 南京农业大学园艺学院,农业部南方蔬菜遗传改良重点开放实验室,江苏南京210095 |
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| 基金项目： | 国家重点基础研究发展计划项目，国家自然科学基金项目，现代农业产业技术体系建设专项基金项目 |
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| 摘 要： | 以耐盐性较弱的黄瓜品种津优4号为材料,采用Hoagland营养液栽培法,研究了外源精胺(Spm)对盐胁迫下黄瓜幼苗生长和光合作用的影响。结果表明,75.0 mmol/L NaCl明显抑制了黄瓜幼苗生长,降低了黄瓜幼苗的净光合速率(Pn);0.3 mmol/L外源Spm显著提高了盐胁迫下黄瓜幼苗的株高、茎粗、干重、鲜重、净光合速率(Pn)、光化学猝灭系数(qP)(P<0.05)。表明,外源Spm能够提高黄瓜幼苗的光合作用,有利于植株生长。
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| 关 键 词： | 黄瓜 精胺 盐胁迫 生长 光合作用 |
Effects of exogenous spermine on growth and photosynthesis of Cucumis sativus L.seedlings under NaCl stress |
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| YUAN Ying-hui , SHU Sheng , YUAN Ling-yun , SUN Jin , GUO Shi-rong. Effects of exogenous spermine on growth and photosynthesis of Cucumis sativus L.seedlings under NaCl stress[J]. Jiangsu Journal of Agricultural Sciences, 2012, 28(4): 835-840 |
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| Authors: | YUAN Ying-hui SHU Sheng YUAN Ling-yun SUN Jin GUO Shi-rong |
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| Affiliation: | (College of Horticulture,Nanjing Agricultural University,Nanjing 210095,China) |
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| Abstract: | Weak salt-tolerance cucumber cultivar Jingyou 4 was selected as material to study the effects of exogenous spermine on the growth and photosynthesis of Cucumis sativus L.seedlings under salt stress by hydroponic culture.NaCl stress(75.0 mmol/L NaCl) inhibited plant growth and photosynthesis of Jingyou 4.Exogenous spermine significantly increased the height,stem diameter,fresh and dry weights,net photosynthetic rate(Pn),photochemical quenching coefficient(qP)(P<0.05).The results indicated that exogenous spermine increased the photosynthesis,thus contributing to the growth of cucumber seedlings. |
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| Keywords: | cucumber spermine NaCl stress growth photosynthesis |
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