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. 2019 Sep 19;10:1113. doi: 10.3389/fpls.2019.01113

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Copyright © 2019 Wei, Wang, Li, Jiang and Dong

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) and the copyright owner(s) 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 density and nitrogen application rate on ribulose-1,5-bisphosphate carboxylase (RuBPCase) activity in (A, B) DH618 and (C, D) DH605 during the 2014 and 2015 growing seasons. VT and 20DAT represent the tasseling stage and 20 days after tasseling, respectively. Different lowercase letters indicate a significant difference (p < 0.05) among treatments at the same growth stage. LD and HD refer to low density and high density, respectively; N0, N180, N270, N360, and N540 represent nitrogen rates of 0, 180, 270, 360, and 540 kg ha⁻¹, respectively.