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农学学报

农学学报 ›› 2012, Vol. 2 ›› Issue (2): 1-4.

所属专题： 生物技术

• 农艺科学 生理生化 •    下一篇

高浓度SO2对香蕉苗生理影响

张进忠 林贵美 李小泉 韦绍龙 韦华芳   

  • 收稿日期:2011-05-17 修回日期:2011-08-26 出版日期:2012-02-20 发布日期:2012-02-20
  • 基金资助:

    广西自然科学基金

Banana Plantlets Physiological Responses to High-concentration SO2

  • Received:2011-05-17 Revised:2011-08-26 Online:2012-02-20 Published:2012-02-20

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摘要：

通过对香蕉苗进行不同初始浓度为0、1、2、5 g/m3的SO2熏气处理，研究其叶片结构、全硫含量、脯氨酸的变化。结果显示香蕉苗对SO2产生明显生理响应。随SO2浓度（为初始浓度，下同）上升，全硫、脯氨酸含量呈现递增趋势，受害叶片数、叶面积增加，叶片细胞受损害程度递增，原生质外泄、细胞收缩、骨架受损、细胞内因受害产生红色物质。研究结果表明：SO2作用于香蕉苗在其细胞内产生丝状分散的红色物质可能是SO2对其特殊的反应，可作为检测SO2污染的辅助技术；香蕉苗吸入的硫素含量达到自身正常水平的50%仍可进行正常恢复生长，也表明其对SO2污染有一定程度的净化作用；另外，全硫、脯氨酸含量在SO2处理中表现出线性相关。

关键词: 水稻, 水稻, 土壤, 重金属, 单因子污染指数, 综合污染指数, 相关性, 粤北矿区

Abstract:

Change of leaf structure, proline and total sulfur content have been study for the banana plantlet treated with SO2 at the different initial concentration level of 0, 1, 2, 5 g/m3. The result showed leaves and leaf cells suffered injury, the total sulfur content and proline content in leaf increased with the increasing SO2 dosage, and protoplasm letting out, cell shrinking, and cytoskeleton damaged. Special unknown red substance produced in cell because of damage by SO2. The results suggested that the production of red substance maybe the only reaction by SO2, and it can be applied for the identification of SO2 pollution as an accessorial tool. The normal growth status when absorb 1.5 times sulfur showed banana plantlet’s decontamination to SO2. The same time, plantlet sulfur content was linear with proline content when treated with SO2.

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