Comparison of photosynthetic activity of Orychophragmus violaceus and oil-seed rape

作者：Yanyou Wu, Xianshun Wu, P. P. Li, Yifan Zhao, X. T. Li, Xiangcheng Zhao · 发表于：Photosynthetica · 年份：2005 · DOI：10.1007/s11099-005-0049-3 · 被引用次数：15 · 研究领域：Photosynthetic Processes and Mechanisms、Plant Stress Responses and Tolerance、Plant responses to elevated CO2

Orychophragmus violaceus, Brassica campestris cv. Chuanyou No.8, and Brassica juncea cv. Luzhousileng diurnal changes of net photosynthetic rate (PN) and activities of carbonic anhydrase (CA) of leaves were studied. One uni-modal curve occurred at the diurnal changes of PN in O. violaceus, but bimodal curves were found in B. campestris and B. juncea. Thus photosynthetic midday depression was not found in O. violaceus but in both Brassica species. Midday depression of PN in O. violaceus was not related to high temperature or low humidity at midday but to the activity of CA.