生物技术通报 ›› 2017, Vol. 33 ›› Issue (7): 96-99.doi: 10.13560/j.cnki.biotech.bull.1985.2016-1188

• 研究报告 • 上一篇    下一篇

水杨酸对镉胁迫小麦叶绿素荧光参数的影响

王瑞波   

  1. 农业部农业生态与资源保护总站,北京100125
  • 收稿日期:2016-11-06 出版日期:2017-07-11 发布日期:2017-07-11
  • 作者简介:王瑞波,博士,副研究员,研究方向:农业生态与环境保护;E-mail:992815145@qq.com
  • 基金资助:
    科技部星火计划项目(2013GA710066)

Effect of Salicylic Acid on Chlorophyll Fluorescence Parameters in Wheat Under Cadmium Stress

WANG Rui-bo   

  1. Rural Energy and Environment Agency,Ministry of Agriculture,Beijing 100125
  • Received:2016-11-06 Published:2017-07-11 Online:2017-07-11

摘要: 以新麦18为材料,利用叶绿素荧光技术,分析水杨酸对镉胁迫叶绿素荧光参数的影响。结果表明,水杨酸处理(SA)镉胁迫小麦,根系镉含量显著下降;根长,叶绿素含量,叶绿素荧光参数Fv/Fm、φPSⅡ、SqP和qN下降幅度显著小于CK。可见水杨酸阻止了镉进入小麦的根部,使其表现出较高的光合效率。上述结果表明水杨酸处理显著提高了小麦的耐镉特性。

关键词: 小麦, 水杨酸, 镉处理, 叶绿素荧光参数

Abstract: The effect of salicylic acid on chlorophyll fluorescence parameters in wheat(Xinmai 18)under cadmium stress was analyzed by using chlorophyll fluorescence technique. The results showed that under cadmium stress,cadmium content in wheat root decreased significantly. Moreover,root length,chlorophyll content,chlorophyll fluorescence parameters Fv/Fm,φPSⅡ,qP and qN through salicylic acid(SA)pretreatment were significantly less than CK. It was concluded that salicylic acid inhibited the cadmium into the root of wheat,resulting in higher photosynthetic efficiency. The above results revealed that salicylic acid pretreatment significantly increased the wheat’s tolerance to cadmium.

Key words: wheat, salicylic acid, cadmium treatment, chlorophyll fluorescence parameters