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. 2020 Aug 18;11:1214. doi: 10.3389/fpls.2020.01214

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Copyright © 2020 Taube, Vogeler, Kluß, Herrmann, Hasler, Rath, Loges and Malisch

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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(A) Netto Primary Production (H_NPP) at harvest (B) aboveground NPP (H_ANPP), (C) belowground NPP(H_BNPP), and (D) fraction of belowground NPP to total NPP (H_fBNPP) measured in three blocks from 10 different hybrids, which were released in the period between 1971 and 2012 and either grown in 2015 or 2016; S = slope of the regression. The regression indicates differences among hybrids across the year of registration. All slopes were tested to be significantly different from zero. Significance levels are: ***p < 0.001 and *p < 0.05.