Research Article

Variation in Morphological and Physiological Characteristics of Wild Elymus nutans Ecotypes from Different Altitudes in the Northeastern Tibetan Plateau

Figure 5

(a) Photosynthetic response (Pn—net photosynthetic rate) and transpiration (Tr). (b) Response of intercellular CO2 concentration (Ci) and stomatal conductance (Cond) measured on four E. nutans populations from different altitudes. Values are shown as the of three replicated. Different letters indicate that the mean values are significantly different among the treatments ().
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