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中国农学通报

中国农学通报 ›› 2011, Vol. 27 ›› Issue (6): 99-102.

所属专题： 生物技术

• 林学 园艺 园林 • 上一篇    下一篇

水分胁迫对八宝景天生理特性的影响

马剑 刘桂林 颉芳芳 刘冬云 梁海永   

  • 收稿日期:2010-09-25 修回日期:2010-11-22 出版日期:2011-03-20 发布日期:2011-03-20

Effect of Water Stress on Growth and Physiological Characteristicsof Sedum Spectabile Boreau

  • Received:2010-09-25 Revised:2010-11-22 Online:2011-03-20 Published:2011-03-20

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摘要：

为了解八宝景天对水分胁迫的适应性，本试验以八宝景天1a生扦插苗为试验材料，研究了水分胁迫下土壤含水量、叶片相对含水率(RWC)，超氧化物歧化酶(SOD)活性、过氧化物酶(POD)活性、丙二醛(MDA)、以及相对电导率的变化。结果表明：在干旱胁迫下，土壤含水量和叶片组织相对含水量呈下降趋势；在水涝胁迫下，土壤含水量和叶片组织相对含水量呈升高趋势。在水分胁迫下，相对电导率和丙二醛含量升高，而超氧化物歧化酶活性和过氧化物酶活性则呈现先上升后下降的趋势。综合指标分析认为,八宝景天对水分胁迫具有较强的忍耐能力。

关键词: 贮藏保鲜, 贮藏保鲜

Abstract:

In order to investigate the reaction and adaptation of Sedum Spectabile Boreau under water stress, taking 1-year-old seedlings of Sedum Spectabile Boreau as test materials, water content of soil, leaves relative water content, SOD activity, POD activity, MDA content and leaves relative water content were studied. Results showed that the water content of soil and leaves relative water content decreased under drought stress; the water content of soil and leaves relative water content increased under water logging stress. under water stress,the relative leakage of electrolytes and MDA content increased，but activities of SOD and POD increased at first but later decreased. Comprehensive analysis showed that Sedum Spectabile Boreau had some resistance on water stress.