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. 2017 Sep 19;8:1506. doi: 10.3389/fpls.2017.01506

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Copyright © 2017 Yu, Li, Fan, Yang and Huang.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Effects of elevated CO₂ concentration (800 μmol⋅mol^-1 vs. 400 μmol⋅mol^-1) on net photosynthetic rate (P_n) (A), chlorophyll content (Chl) (B) and (C) photochemical efficiency (F_v/F_m) in response to heat stress in bermudagrass. The treatments symbols are 30 and 45 for normal temperature control and heat stress and 400 and 800 for ambient CO₂ and elevated CO₂ concentrations, respectively. Vertical bars indicate significant difference based on LSD values (P ≤ 0.05) for the comparison among treatments.