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. 2021 Oct 21;12:757869. doi: 10.3389/fpls.2021.757869

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Copyright © 2021 Pepe, Hesami, Small and Jones.

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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Spectral analyses of light treatments from the validation experiment. Images demonstrate relative amounts of fluencies emitted per treatment. Light spectra presented were obtained using Li-Cor LI-180 spectrometer. Presented are optimized light treatments for (A) genetic algorithm (GA) shoot length, (B) GA canopy surface area, (C) GA number of shoots, (D) GA number of nodes, (E) biogeography-based optimization (BBO) canopy surface area, (F) BBO shoot length, (G) interior search algorithm (ISA) shoot length, (H) ISA number of nodes, (I) ISA root length, (J) ISA number of shoots, (K) symbiotic organisms search (SOS) shoot length, (L) ISA canopy surface area, (M) SOS root length, (N) BBO number of nodes, (O) SOS canopy surface area, (P) SOS number of nodes, (Q) BBO number of shoots, and (R) SOS number of shoots.