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中国农学通报

中国农学通报 ›› 2012, Vol. 28 ›› Issue (1): 35-38.doi: 10.11924/j.issn.1000-6850.2011-2171

所属专题： 园艺； 农业气象

• 林学 园艺 园林 • 上一篇    下一篇

持续干旱胁迫及复水对橡胶树渗透调节能力的影响

宫丽丹 田耀华 龙云峰 魏丽萍   

  • 收稿日期:2011-07-26 修回日期:2011-08-22 出版日期:2012-01-05 发布日期:2012-01-05

Effect of Continuous Drought Stress and Rewatering on Osmotic Regulation in Leaves of Hevea brasiliensis

  • Received:2011-07-26 Revised:2011-08-22 Online:2012-01-05 Published:2012-01-05

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摘要：

干旱胁迫是影响植物生长发育的重要因子。为了研究橡胶树的抗旱能力及其抗旱机制，以橡胶树为供试材料，通过盆栽试验，在温室条件下研究自然干旱胁迫和复水处理对橡胶树叶片渗透调节物质及细胞膜透性的影响。结果表明：随着干旱胁迫时间的延长，相对电导率、游离脯氨酸含量、可溶性糖含量及可溶性蛋白含量都呈现上升的趋势；复水处理后，相对电导率与可溶性蛋白含量均能恢复至对照水平；游离脯氨酸含量与可溶性糖含量呈下降趋势，但高于对照水平。综合各指标变化情况，说明橡胶树有着较强的抗旱和恢复能力。

关键词: 烟叶, 烟叶, 烘烤, 供能处理, 质量

Abstract:

Drought can greatly affect plant growth and development. The aim is to understand the capacity and mechanisms of drought resistance of Hevea brasiliensis. Through the pot experiment of Hevea brasiliensis seedlings in the greenhouse, the author studied the effect of natural drought stress and rewateting on osmotic regulation substances and membrane permeability. As a result, with time extension of drought stress, the relative electrical conductivity, free proline content, soluble sugar content and soluble protein content showed a rising trend; After water treatment, both the relative electric conductivity and soluble protein content could return to a control level; Free proline content of soluble sugar content presented a downward trend, but the levels of treatment were higher than that of control. Through synthetic assessment, the changes of the indexes indicated that Hevea brasiliensis had relatively strong drought resistance and restore ability.