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Position: Home > Articles > Study on Osmotic Adjustment on Inorganic Ions of Cucumber Seedling under NaCl Stress Journal of Henan Agricultural Sciences 2010,39 (2) 81-84

NaCl胁迫下黄瓜幼苗无机离子的渗透调节效应

作  者:
周俊国;扈惠灵;曾凯;赵润洲;成坤
单  位:
河南科技学院;河南省农业科学院
关键词:
NaCl胁迫;黄瓜幼苗;无机离子;渗透调节
摘  要:
以营养液栽培的津春2号黄瓜幼苗为试验材料,研究40 mmol/L NaCl胁迫下黄瓜幼苗无机离子的渗透调节效应。结果表明,在NaCl胁迫下,黄瓜幼苗的生长受到抑制,鲜质量和相对含水量降低。黄瓜幼苗各器官渗透势降低,Cl-、Na+含量上升,但同时K+含量下降,说明NaCl胁迫后黄瓜幼苗Cl-、Na+上升的同时起到了渗透调节、离子毒害和致K+缺乏的三重作用,从而影响了幼苗的生长发育。幼苗各器官中,茎中的Cl-、Na+积累较多,对维持叶片中较低的渗透势和较高的K+含量有积极的作用。
译  名:
Study on Osmotic Adjustment on Inorganic Ions of Cucumber Seedling under NaCl Stress
作  者:
ZHOU Jun-guo1,HU Hui-ling1,ZENG Kai2,ZHAO Run-zhou1,CHENG Kun1 (1.School of Horticulture and Landscape Architecture,Henan Institute of Science and Technology,Xinxiang 453003,China;2.Henan Academy of Agricultural Sciences,Zhengzhou 450002,China)
关键词:
NaCl stress;Cucumber seedlings;Inorganic ion;Osmotic adjustment
摘  要:
Situation of osmotic adjustment on inorganic ions of Jin-chun No.2 cucumber seedling was studied in hydroponics into which added 40mmol/L NaCl.The growth of cucumber seedling was inhibited after 10 days under NaCl stress with fresh weight,relative water content reduced.The osmotic potential was lowered,while the content of Cl-and Na+ increased,and K+ content of every organ reduced.It suggested that the rise of Cl-and Na+ content of cucumber seedling under NaCl stress played three roles in osmotic adjustment,ion toxicity and deficiency of K+ nutrients,so,it negatively influences on seedling growing development.Of all the organs,the stem accumulats more Cl-and Na+ which have an active effects on maintaining lower osmotic potential and higher K+ content in leaf.

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