EFFECT OF DAILY LIGHT INTEGRAL ON PHYSIOLOGICAL AND MORPHOLOGICAL QUALITY OF INDOOR PLANTS IN VERTICAL GARDEN

Abstract

Performance and appearance of vertical gardens are affected by plant quality, which is why creating conditions for their proper growth is crucial. Insufficient amount of light inside buildings significantly limits plant development, especially in the autumn and winter in the northern hemisphere. The objective of this study was to investigate physiological and morphological quality of plant species, Asplenium, Chlorophytum and Philodendron, in an indoor vertical garden exposed to two levels of daily light integral (DLI). Higher DLI level (1.1-1.7 mol m−2 day‑1) improved plant diameter, height, leaf length and width, leaf area, total area of leaf blades, dry weight, and carotenoid content, however did not affected leaf fresh weight and leaf number. Chlorophytum and Asplenium were particularly responsive to natural light supplementation and were distinguished by the best growth habit and compactness.