An appropriate, higher red/blue light ratio may lead to increased growth of peace lily (Spathiphyllum floribundum)
Spathiphyllum floribundum (Linden & André) N.E.Br., also known as the peace lily, is one of the most popular indoor ornamental plants and cut-flower species, and is cultivated and grown commercially worldwide.
Its growth is mainly associated with light, especially light quality. Thus, improving its growth by regulating the light quality under indoor low-light conditions may be critical for generating high-quality flowers.
Read this paper in the Canadian Journal of Plant Science.
In this study, the effects of the following six light-quality treatments on the activities of two enzymes, peroxidase and superoxide dismutase, in two S. floribundum cultivars (“Sweet Chico” and “Queen”) were analyzed: monochromatic light comprising 100% red (R, 657 nm) or 100% blue (B, 450 nm) light, a combination of R and B lights [80% R + 20% B (8:2), 70% R + 30% B (7:3), and 60% R + 40% B (6:4)], and white light.
The light treatments were performed using light-emitting diodes (LEDs). The light intensity and photoperiod were set to 45 ± 2 μmol·m−2·s−1 and 14 h·day−1, respectively. The results of this study revealed that an appropriate, higher R:B light ratio may lead to increased pigment contents, thereby increasing the synthesis and accumulation of photosynthetic products, which will result in increased stress resistance and enhanced growth.
Through this study we analyzed the physiological acclimation of plantlets, selected the optimal light proportions using R and B LEDs for improving commodity plantlet qualities and indoor ornamental plant growth, and expanded the theoretical and technical basis of S. floribundum production. These findings provide the basis for future investigations on the growth and production of S. floribundum and other indoor ornamental plants.
Read the paper — Effects of different light-emitting diode qualities on the growth and photosynthetic characteristics of Spathiphyllum floribundum by Yinglong Song, Wenqian Shang, Zheng Wang, Songlin He, Liyun Shi, Yuxiao Shen, Xueyuan Lou, and Yuke Sun.
