Fig. 2
From: Low CO2 concentration, a key environmental factor for developing plateau adapted rapeseed
Daily variation curves of environmental factors in the experimental bases of the Academy of Agriculture and Animal Husbandry in Lhasa, Tibet, and the Chengdu rapeseed plantation, Sichuan University, China. A Diurnal variation of photosynthetically active radiation, B diurnal variation of ambient temperature, C diurnal variation of atmospheric relative humidity, D diurnal variation of atmospheric carbon dioxide concentration