LI Xing-tao,CAO Ping,WANG Wei,et al.Biological Responses of the leaves of Low Potassium Tolerant and Sensitive Soybean Varieties to Low-potassium Stress[J].Soybean Science,2010,29(06):964-966,970.[doi:10.11861/j.issn.1000-9841.2010.06.0964]
不同耐性大豆品种叶片对低钾胁迫的生理响应
- Title:
- Biological Responses of the leaves of Low Potassium Tolerant and Sensitive Soybean Varieties to Low-potassium Stress
- 文章编号:
- 1000-9841（2010）06-0964-03
- 关键词:
- 大豆; 耐低钾; 比叶重; 可溶性糖; Ca2+-ATPase; Mg2+-ATPase
- Keywords:
- Soybean; Low potassium tolerance; Special leaf weight; Soluble sugar; Ca2+-ATPase; Mg2+-ATPase
- 分类号:
- S565.1
- 文献标志码:
- A
- 摘要:
- 以耐低钾型品种沈农6和低钾敏感型品种铁丰31为材料，通过砂培试验研究了不同低钾耐性大豆品种叶片对低钾胁迫的生理学响应。结果表明：低钾胁迫下敏感型品种叶片叶面积较高钾处理显著降低，而比叶重显著升高，耐性品种2个指标在处理间没有明显变化；低钾胁迫下2个品种叶片可溶性糖含量均下降，耐性品种表现更为突出。此外，低钾条件下耐性品种的淀粉含量降低，而敏感品种的淀粉含量显著升高；低钾条件下，耐性品种处理间的Ca2+-ATPase、Mg2+-ATPase活性没有显著下降，而敏感品种下降达到了显著水平。
- Abstract:
- Low-K sensitive and low-K tolerant soybean[Glycine max(L.) Merr.]varieties, Tiefeng31 and Shennong6, were used to study the biological responses of them to low-potassium stress by sand culture in the presence of 0.5 mmol·L-1 K and 3.0 mmol·L-1 K. After 25 d of growth, leaf area, special leaf weight (SLW), soluble sugar content， amylum content， Ca2+-ATPase and Mg2+-ATPase of leaf were investigated. The results showed that leaf area of sensitive variety was higher and SLW was declined under low K stress, while that of tolerant variety changed slightly under K deficiency condition. The soluble sugar was lower than those at adequate K supply, especially to tolerant variety under low K stress. Furthermore, the amylum content of sensitive variety was higher and that of tolerant variety was declined under low K stress. Ca2+-ATPase and Mg2+-ATPase of tolerant variety changed slightly, but those of sensitive variety were all declined dramaticlly under low K stress.
参考文献/References:
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备注/Memo
基金项目：辽宁省科技厅博士启动研究资助项目（20061041）；沈阳农业大学基金资助项目（2006109）。