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. 2017 Aug 23;8:1466. doi: 10.3389/fpls.2017.01466

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Copyright © 2017 Yang, Zhao, Li, Ai, Liu, Qi, Zhang, Yang and Liao.

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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Root architecture, biological nitrogen fixation (BNF) and growth of JD12 and NF58 in the field. (A) Photo of JD12 roots [shallow root architecture); (B) photo of NF58 roots (deep root architecture (RA)]; (C) shoot dry weight (SDW); (D) grain yield; (E) nodule number; (F) nodule weight. Bars represent means ± SE from nine replications. Asterisks indicate the significance of differences between JD12 and NF58 through Student t-test at 5% (^∗) and 1% (^∗∗) level.