How does elevated [CO 2 ] affect PRI and RUE under well‐watered and drought conditions? FL PRI and RUE varied throughout the plant's growth and development, while a decreasing trend was evident for both PRI and RUE, particularly under eCO 2 (Figure 2 ).
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Use of thermal imaging and the photochemical reflectance index (PRI) to detect wheat response to elevated CO<sub>2</sub> and drought.
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