PJB-2018-303
Effect of increasing LED light intensity on cucumber growth and nutritional quality at different growth stages
Tao Liu
Abstract
LED (light emitting diodes) having small size, durability, wavelength specificity and cooler emitting surfaces are gaining much importance as supplemental or sole source lightning system for crop production. A pot experiment was carried out in a controlled environmental condition to investigate the effect of increasing LED light intensity on cucumber (Cucumis sativus cv. Zhongnong 29) growth and fruit nutritional quality at seedling stage and fruiting stage. Four increasing LED light intensities of 80 ± 5 µmol·m-2·s-1 (CK), 100 ± 5 µmol·m-2·s-1 (T1), 150 ± 5 µmol·m-2·s-1 (T2) and 200 ± 5 µmol·m-2·s-1 (T3) were used with red (635 nm) and blue (435 nm) LED light ratio of 2:1. Results showed that the height, stem diameter, total leaf number, fresh and dry weight (FW & DW) of cucumber plants increased with increasing LED light intensity. LED light intensity of 200 µmol·m-2·s-1 improved net photosynthetic rate, soluble sugar content, vitamin C content and yield of cucumber. We concluded that increasing LED light intensity resulted better performance on cucumber whole growth stage.
To Cite this article:
Download
