“…As a major staple food, rice will play an important role in this context. Increasing its photosynthetic capacity is thus a challenge for increasing crop yield (Makino, ; Simkin, López‐Calcagno, & Raines, ; Yoshida & Horie, ; Yoshida, Horie, & Shiraiwa, ) and the performance of cropping systems (Evans, ; Foyer, Ruban, & Nixon, ; Lawson, Kramer, & Raines, ; Long, Marshall‐Colon, & Zhu, ; Nuccio et al, ; Ort et al, ). Several studies reported inter‐ and intra‐specific variability in rice photosynthetic rate increase under elevated CO 2 (e‐CO 2 ) (Adachi et al, ; Makino & Mae, ; Wang et al, ; Zhu et al, ).…”