ABSTRACT: The time spent by urban residents indoors has been increasing annually, thus, prioritizing the enhancement of indoor spaces into green spaces to improve the quality of life. Even with limited environmental conditions indoors, an active living wall and LED light techniques have enabled us to explore indoor green environments. In the present study, the yellow/orange-colored flowers invasive ornamental species,Lantana camara‘splendens’, was cultivated in 4.0 m2 of the active living wall under a non-decorative LED lamp, adjusted to optimize performance in the coverage area. This study evaluated the development of lantana in the active living wall under different light intensities (135 watts and 90 watts) in a room with light restriction. Parameters such as plant height, flowering, SPAD chlorophyll content, and vegetative cover were analyzed. The results indicated that Lantana camara ‘splendens’ is suitable for use in active living walls and blooms at a low light intensity when the light is uniformly applied.

RESUMO: O tempo gasto pelos moradores urbanos em ambientes fechados vem aumentando anualmente, assim, priorizando a valorização dos espaços internos em espaços verdes para melhorar a qualidade de vida. Mesmo com condições ambientais limitadas em ambientes internos, o uso de jardins verticais e técnicas de luz de LED nos permitiram explorar ambientes verdes internos. No presente estudo, a espécie ornamental invasora de flores de coloração amarela/alaranjada, Lantana camara ‘splendens’, foi cultivado em 4,0 m2 de jardim vertical sob luminária LED não decorativa, ajustada para otimizar a performance na área de cobertura. Este estudo teve como objetivo avaliar o desenvolvimento da Lantana camara ‘splendens’, em jardim vertical, sob diferentes intensidades de luz (135 watts e 90 watts), em ambiente com restrição total de luz. Foram analisados parâmetros como altura da planta, floração, teor de clorofila SPAD e cobertura vegetativa. Os resultados indicam que Lantana camara ‘splendens’ é adequada para uso em jardim vertical e floresce em baixa intensidade de luz quando a luz é aplicada uniformemente.

ABSTRACT Terpenes are secondary metabolites produced from isopentenyl pyrophosphate (IPP) and dimethylallyl pyrophosphate (DMAPP). Considering their role against biotic and abiotic stress conditions, the D-limonene, a terpene recognized for its roles in plant defense and as pigment molecules, was tested to monitor its impact in the accumulation of carotenoid terpene pigments during tomato fruit ripening. The concentrations of 0.0, 1.0, and 2.0 mL·L–1 were sprayed weekly on tomato plants ‘Micro-Tom’ until the harvest. The fruits were harvested at the mature green stage (MG), the breaker stages (BR), three days after the breaker (BR + 3), the red ripe stage (RR), and the concentration of carotenoids was evaluated. The application of D-limonene enhanced the concentration of carotenoids in the early stages of tomato fruit ripening and ripe fruits, and the accumulation of carotenoids was greater following dose increment. This result can bring important contributions to horticulture and food nutrition by linking plant defense and the accumulation of molecules with recognized antioxidant capacity in fruit.

RESUMO: Couropita guianensis Aubl. é uma espécie florestal de origem amazônica, de importância no uso medicinal e ornamental. O objetivo do presente estudo foi avaliar o efeito de diferentes meios de cultivo e espectros de luz na germinação e desenvolvimento in vitro de embriões zigóticos de Couropita guianensis. Os meios de cultura avaliados foram o MS e o WPM, sem adição de reguladores de crescimento, associados a quatro espectros de luz de LED branca (CW), 70% vermelha + 30% azul (R2B), 100% vermelha (R) e 100% azul (B). Ocorreu 100% de germinação in vitro e os meios de cultivo não interferiram no desenvolvimento dos embriões. Os diferentes espectros de luz induziram a morfogênese in vitro e o tratamento R2B promoveu a produção de raízes secundárias em número significativo. Este efeito poderá auxiliar no processo de enraizamento e aclimatização de mudas dessa espécie.

ABSTRACT: Couroupita guianensis Aubl. is an Amazonian forest species with important medicinal and ornamental value. This study evaluated the effect of different culture media and light spectra on the in vitro germination and development of the zygotic embryos of C. guianensis. The culture media, MS and WPM, were evaluated without the addition of plant growth regulators and were associated with four LED light spectra: white (CW), 70% red + 30% blue (R2B), 100% red (R), and 100% blue (B). One hundred percent of the seeds successfully underwent in vitro germination, and the culture media did not interfere with embryo development. In addition to this, the different light spectra induced in vitro morphogenesis and R2B treatment significantly promoted the production of secondary roots. This effect may aid in the rooting and acclimatization of seedlings of this species.