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中国农学通报

中国农学通报 ›› 2010, Vol. 26 ›› Issue (20): 362-365.

所属专题： 生物技术

• 农学 农业基础科学 • 上一篇    下一篇

短期高温对香蕉幼苗光合作用及相关生理指标的影响

安佳佳 李新国 李绍鹏 王晶晶   

  • 收稿日期:2010-05-08 修回日期:2010-06-09 出版日期:2010-10-20 发布日期:2010-10-20

Effects of Short-Term High Temperature on Photosynthesis and Related Physiological Indices in Brazil Banana Plantlets

  • Received:2010-05-08 Revised:2010-06-09 Online:2010-10-20 Published:2010-10-20

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摘要：

本试验以巴西蕉幼苗为试材，研究经短期高温处理后叶片光合作用和几种生理指标的变化。结果表明，短期高温处理后，巴西蕉叶片净光合速率（Pn）、气孔导度（Gs）和蒸腾速率（Tr）相比对照有所下降，而细胞间隙CO2浓度（Ci）持续升高。高温处理24 h后，巴西蕉幼苗叶片叶绿素总量相比对照降低9.62%，而可溶性蛋白含量、游离脯氨酸含量（Pro）、MDA含量相比对照均有极显著的提高，可见短期高温胁迫对巴西蕉幼苗的生长产生了不利的影响。

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Abstract:

The Brazil banana plantlets were used as material to study the changes of photosynthesis and physiological indices of leaves under short-term high temperature.The results showed that Pn，Gs，Tr decreased than those of CK ,but Ci continued to rise. After 24 h heat treatment,the leaf of Brazil banana total chlorophyll content were lower than 9.62% of CK, while the soluble protein, free proline, MDA content were increased significantly than those of CK.The results suggested that short-term high temperature might result the bad effects on the growth of the brazil banana plantlets.