Bantis Filippos, Simos Nikolaos, Koukounaras Athanasios
Department of Agriculture, University of Western Macedonia, 53100 Florina, Greece.
School of Agriculture, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece.
Plants (Basel). 2025 Jan 7;14(2):153. doi: 10.3390/plants14020153.
Plant factories with artificial lighting (PFALs) are a notable choice for urban agriculture due to the system's benefits, where light can be manipulated to enhance the product's yield and quality. Our objective was to test the effect of light spectra with different red-blue combinations and white light on the growth, physiology, and overall quality of three baby-leaf vegetables (green lettuce, kale, and pak choi) grown in a restaurant's PFAL. Leaf mass per area was lower under the most blue-containing treatments in all species. The performance indices (PI and PI) of the photosynthetic apparatus were lower under more red light with the exception of PI in pak choi. Total soluble solids accumulation was diminished under most of the blue-containing LEDs, while total phenolics and antioxidant activity were induced by red-blue environments rich in blue light. Moreover, chlorophyll and carotenoid accumulation was also enhanced under blue-rich light treatments. Nitrate content was the lowest under monochromatic blue in all species. Finally, the employees were asked about their views on the PFAL within the restaurant's compounds and they expressed positive opinions. Overall, a light environment including red and blue wavelengths proved beneficial for baby leafy vegetable production in terms of yield and quality.
人工光照植物工厂（PFALs）因其系统优势成为城市农业的一个显著选择，在该系统中，光照可被调控以提高作物产量和品质。我们的目标是测试不同红蓝光组合光谱以及白光对一家餐厅PFAL中种植的三种叶菜类蔬菜（生菜、羽衣甘蓝和小白菜）生长、生理特性及整体品质的影响。在所有品种中，含蓝光最多的处理下单位叶面积质量较低。除小白菜的性能指数PI外，光合机构的性能指数（PI和PI）在红光较多的情况下较低。在大多数含蓝光的发光二极管下，总可溶性固形物积累减少，而富含蓝光的红蓝光环境诱导了总酚类物质和抗氧化活性。此外，在富含蓝光的光照处理下，叶绿素和类胡萝卜素积累也得到增强。在所有品种中，单色蓝光下硝酸盐含量最低。最后，员工们被问及他们对餐厅区域内PFAL的看法，他们表达了积极的意见。总体而言，就产量和品质而言，包含红蓝光波长的光照环境对叶菜类蔬菜生产有益。
