RT info:eu-repo/semantics/article T1 Blue-enriched LED light stimulates flowering in aeroponic Matricaria chamomilla A1 Lozano Castellanos, Luisa Fernanda A1 Arroyo García, Aurora A1 Correa Guimaraes, Adriana A1 Navas Gracia, Luis Manuel K1 Ingeniería agroforestal K1 Fotomorfogénesis K1 Fisiología vegetal K1 Botánica K1 Matricaria chamomilla (Manzanilla) K1 Manzanilla K1 Agricultura interior K1 Iluminación LED K1 Espectros de luz K1 Cultivo sin suelo K1 3106 Ciencia Forestal K1 3103 Agronomía K1 2417 Biología Vegetal (Botánica) AB The indoor cultivation of Matricaria chamomilla represents a promising strategy for optimizing medicinal plant production. This research evaluated the effects of LED spectral composition on the morphological and biochemical development of chamomile in an aeroponic system. Three light treatments were applied: Red predominant + Far-red + Blue (Rh + FR + B), Blue predominant + Red + Far-red (Bh + R + FR), and Red + Blue (R + B), with a photosynthetic photon flux density (PPFD) of 255.96 ± 5.8 µmol m−2 s−1. Seedlings were germinated under controlled conditions and later transferred to an aeroponic system with mist irrigation. The treatment Bh + R + FR significantly enhanced flowering, increasing flower and bud production, floral head diameter, and petal length. In contrast, R + B promoted higher chlorophyll accumulation and nitrogen balance index, favoring greater leaf expansion, particularly in pinna length. Although anthocyanin and flavonoid concentrations increased over time in all treatments, their accumulation was not significantly affected by spectral composition. These findings highlight that optimizing chamomile flower production requires a higher proportion of blue light, while a balanced red-to-blue ratio is more effective for maximizing leaf development. This study provides new insights into spectral optimization for controlled M. chamomilla cultivation, supporting its application in the medicinal and aromatic plant industry. PB Springer Nature SN 2197-0025 YR 2026 FD 2026 LK https://uvadoc.uva.es/handle/10324/82666 UL https://uvadoc.uva.es/handle/10324/82666 LA eng NO Theoretical and Experimental Plant Physiology, enero 2026, vol. 38, n. 2. NO Producción Científica DS UVaDOC RD 09-feb-2026