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. 2018 May 9;9:622. doi: 10.3389/fpls.2018.00622

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Copyright © 2018 Tiedge and Lohaus.

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 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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Sugar percentages in nectaries and nectar. All percentages were calculated from mM; n = 3; light and dark periods are indicated by white and black bars; one pair of bars indicates one time point of sampling, with the Left bar representing nectar and the Right bar representing nectaries. (A) N. africana, (B) N. tabacum, (C) N. attenuata, (D) N. benthamiana, and (E) N. sylvestris.