Welcome to Chinese Journal of Applied Ecology! Today is Share:

Chinese Journal of Applied Ecology

Previous Articles     Next Articles

Influence of dehydration and diurnal variation on characteristics of chlorophyll fluorescence of leaves in Haloxylon ammodendron and H. persicum.

SHEN Liang1, CHEN Jun1, LIU Sa1, XU Rong1, XU Chang-qing1, LIU Tong-ning2   

  1. (1Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100193, China; 2Yongning Plantation of Herba Cistanche, Yinchuan 750100, China)
  • Online:2015-08-18 Published:2015-08-18

Abstract: To evaluate the ecological adaptation mechanism of Haloxylon ammodendron and H. persicum from Ningxia, the host of Cistanche deserticola, the chlorophyll fluorescence under dehydration and diurnal variation was determined by IMAGINGPAM method. The results showed that H. ammodendron had higher photosynthetic electron transport activity (Fv/Fm), photosynthetic efficiency (qP), and PSⅡ electron transport activity (ETR) than H. persicum. After 48 h dehydration, the chlorophyll fluorescence and waterretaining property of H. ammodendron were significantly higher than those of H. persicum. The significant difference in diurnal variation between H. ammodendron and H. persicum was observed and a‘V’trend was exhibited. It suggested that H. ammodendron had a stronger ability to adapt to the environment and had wider distribution, while H. persicum was limited by water and light and had narrow distribution.