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. 2020 Dec 21;11:595095. doi: 10.3389/fpls.2020.595095

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Copyright © 2020 Ou, Cui, Zhu, Guo, Liu and Yang.

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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Root PNS content of P. notoginseng in the field experiment (A: Shizong; B: Qiubei) and in the pot culture experiments (C: 2-year seedling; D: 3-year seedling) under the conditions of different N and K application ratios. PNS, Panax notoginseng saponin. All data represent means ± SDs, n = 4; number in the box represents single saponin content; number above the box represents the sum of five single saponin content; different small letters above the column represent significant difference among the four treatments at p < 0.05.