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. 2017 Mar 17;8:371. doi: 10.3389/fpls.2017.00371

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Copyright © 2017 Wu, Cui, Wang, Li, Fahad, Hu, Huang, Nie, Mohapatra and Peng.

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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Proposed mechanism by which cytokinins mediate changes in the number of spikelets per panicle in response to high temperature treatments during the early reproductive phase in rice. -, +, and 0 indicate a decrease, an increase, and relative stability in a certain trait under high temperature treatment, respectively. → indicates a significant correlation between two traits. ⤑ indicates no significant correlation between two traits. The value of the trait with a box was decreased in heat-susceptible varieties while increased in heat-tolerant variety SY63 under the three high temperature treatments. The other traits without a box showed similar responses to the high temperature treatments, which showed larger changes in heat-susceptible varieties than that in heat-tolerant variety.