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. 2022 Jan 12;12:588. doi: 10.1038/s41598-021-04577-x

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© The Author(s) 2022

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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Reflectance spectral indices, normalized difference vegetation index (NDVI), greenness index (G), carotenoid reflectance indexes (CRI2) and water index (WI) of green and red holy basil at vegetative and flowering stages under four different light treatments (3R:1B, 1R:1B, 2R:1G:2B, and 1R:3B). R, G and B represent the red, green and blue llight spectra, respectively, and number before the letters stand for the ratio of each lighrt spectra. Values are represented as mean ± SE (n = 4). ANOVA was performed followed by mean comparison with DMRT. Lower-case letters above bars indicate significant difference (p < 0.05); “ns” indicates no significant difference. Bars indicate standard errors.