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. 2020 Feb 28;11:188. doi: 10.3389/fpls.2020.00188

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Copyright © 2020 Liu, Zhang, Liu, Chen and Zou

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 Zn application on Zn concentration in different sections of maize spikes (A) and correlation of the 1,000-kernel weight of the apical (B), middle (C), and basal (D) sections of maize spikes with Zn concentration. Values are the average ± SE of four replicates. Within each section means with the same lowercase letters are not significantly different at P < 0.05 according to Fisher’s LSD test. The different capital letters indicate a significant difference between sections. ** P < 0.01. ns, not significant.