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. 2024 Dec 17;15:1480876. doi: 10.3389/fpls.2024.1480876

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Copyright © 2024 Huebner, Batarshin, Beck, König, Mewis and Ulrichs

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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Changes in cannabinoid composition as a function of UV exposure. Each letter (A–J) represents a different cannabinoid: (A) shows CBDA, (B) CBD, (C) CBDeq (CBD + CBDA), (D) D8THC, (E) D9THC, (F) D9THCa, (G) THCeq, (H) CBGA, (I) CBN, and (J) CBCA. Different UV intensities and ratios were tested: L1 with a UVA:UVB ratio of 67:33 (4.2 W/m²), L1_C: Control without UV, L2 with a high UVA:UVB ratio of 94:6 (4.99 W/m²), L2_C: Control without UV, L3 in increasing UVA:UVB ratio (99:1) at varying intensities (L3_1: 1.81 W/m², L3_2: 4.12 W/m², L3_3: 8.36 W/m²), L3_C: Control without UV, L3l in increasing UVA:UVB ratio (99:1) at varying intensities but harvested lateral flowers (L3_1l: 1.81 W/m², L3_2l: 4.12 W/m², L3_3l: 8.36 W/m²), L3_Cl: Control without UV. The bar graphs indicate cannabinoid concentrations under these conditions. Significance level: * (P ≤ 0.05).