植物生态学报 ›› 2002, Vol. 26 ›› Issue (4): 441-446.

• 论文 • 上一篇    下一篇

模拟酸雨对龙眼叶片气体交换和叶绿素a荧光参数的影响(英文)

邱栋梁,刘星辉,郭素枝   

  • 发布日期:2002-04-10
  • 通讯作者: 邱栋梁

Effects of Simulated Acid Rain Stress on Gas Exchange and Chlorophyll a Fluorescence Parameters in Leaves of Longan

QIU Dong-Liang, LIU Xing-Hui and GUO Su-Zhi   

  • Published:2002-04-10
  • Contact: QIU Dong-Liang

摘要: 研究了模拟酸雨对龙眼(Dimorcarpus longana)叶片气体交换和叶绿素a荧光参数的影响,结果表明:酸雨胁迫抑制龙眼光合作用,受胁迫叶片光补偿点上升。pH 3.0的酸雨处理6 h后叶片气体交换和叶绿素a荧光参数下降,停止处理后72 h可以恢复。pH 2.5的酸雨处理6 h后净光合速率(Pn)、气孔导度(Cs)、蒸腾速率(Tr),叶绿素a荧光参数Fv/Fo、Fv/Fm、PSII非环式电子传递的量子产量(ΦPSⅡ)、荧光下降比值(Rfd)、非光化学猝灭系数(qN)和光化学猝灭系数(qP)急剧下降,停

Abstract: Longan (Dimorcarpus longana Lour. cv. Wulongling) seedlings of two different ages grown in pots were selected to study the effects of acid rain stress on gas exchange, and chlorophyll a fluorescence parameters and their recovery. Sulfuric acid and nitric