| 盐胁迫对油葵幼苗生长及离子吸收、分布的影响（摘要） |
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| 引用本文： | 杨晓翠,李文建,曲颖,张天虎.盐胁迫对油葵幼苗生长及离子吸收、分布的影响（摘要）[J].农业科学与技术,2011(3):354-358. |
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| 作者姓名： | 杨晓翠 李文建 曲颖 张天虎 |
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| 作者单位： | 中国科学院近代物理研究所;中国科学院研究生院;甘肃亚盛实业(集团)股份有限公司 |
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| 基金项目： | Supported by CAS Western Light, " Dr. West funded " Project(0806270XBB)~~ |
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| 摘 要： | 目的]研究不同NaCl浓度对油葵幼苗干、鲜重变化及离子吸收和分布的影响。方法]不同浓度NaCl溶液模拟盐胁迫环境,测定油葵幼苗干、鲜重及离子含量。结果]NaCl胁迫抑制油葵幼苗生长,降低了幼苗干、鲜重。叶片鲜重下降最明显,200mmol/LNaCl时下降约60%;子叶鲜重下降最少,200mmol/LNaCl时下降约13%。干重的下降程度同鲜重相似,200mmol/LNaCl时根、茎、叶、子叶的干重与对照组相比分别下降约35%、39%、55%和8%。NaCl胁迫下,油葵幼苗根和茎中Na＋含量上升,K＋含量下降;Na＋主要集中在根和茎中,叶片中较少;根中K＋含量下降最明显,叶片中K＋含量相对较高。根和茎中Ca2＋、Mg2＋含量下降,叶片和子叶中Ca2＋含量相对稳定,子叶中Mg2＋含量略上升。结论]葵幼苗在NaCl胁迫下保持较高的矿物质元素吸收和运输以及相对稳定的离子平衡,这可能是油葵具有较高耐盐性的部分原因。
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| 关 键 词： | 油葵 NaCl 离子吸收 |
Impact of Salt Stress on Growth and Ion Uptake of Different Parts of Oil Sunflower Seedlings |
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| YANG Xiao-cui,LI Wen-jian,QU Ying,ZHANG Tian-hu.Impact of Salt Stress on Growth and Ion Uptake of Different Parts of Oil Sunflower Seedlings[J].Agricultural Science ＆ Technology,2011(3):354-358. |
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| Authors: | YANG Xiao-cui LI Wen-jian QU Ying ZHANG Tian-hu |
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| Institution: | 1,31. Institute of Modern Physics,Chinese Academy of Sciences,Lanzhou 730000; 2. Graduate Institute of Chinese Academy of Sciences,Beijing 100049; 3. Gansu Yasheng Industry (Group) Co.,Ltd.,Lanzhou 730000 |
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| Abstract: | Objective] The purpose was to discuss the effects of different NaCl concentrations on fresh weight and dry weight,ion absorption and distribution in oil sunflower seedlings. Method] Under the simulated salt environment by using NaCl solutions at different concentrations,the dry weight,fresh weight and ion content of oil sunflower seedlings were determined. Result] With the increase of NaCl concentration,the growth rate of oil sunflower seedling was inhibited. In addition,its fresh weight and dry weight also decreased; the fresh weight of leaf decreased most significantly by 60%,and that of cotyledon decreased most slightly by 13% at 200 mmol/L NaCl concentration. The dry weight of root,stem,leaf and cotyledon decreased by 35%,39%,55% and 8% respectively,showing a similar decreasing trend with fresh weight. Under NaCl stress,Na+ content in root and stem of oil sunflower seedling increased while K+ decreased. Na+ content was mainly concentrated in roots and stems much more than in leaves; K+ content in roots decreased most significantly by 21% compared with control,and it was relatively high in leaf. Ca2+ and Mg2+ content was decreased slightly in roots and stems; Ca2+ content in leaves and cotyledons was stable; Mg2+ content was slightly increased. Conclusion] Oil sunflower maintained high mineral ion absorptionunder salt stress,that maybe the part reason for high salt tolerance of oil sunflower seedlings. |
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| Keywords: | Oil sunflower seedlings NaCl Ion absorption |
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