Microgreens are rich functional crops with valuable nutritional elements that have health benefits when used as food supplements. Growth characterization, nutritional composition profile of 21 varieties representing five species of the Brassica genus as microgreens were assessed under light-emitting diodes (LEDs) conditions. Microgreens were grown under four different LEDs ratios (%); red:blue 80:20 and 20:80 (R80 :B20 and R20 :B80 ), or red:green:blue 70:10:20 and 20:10:70 (R70 :G10 :B20 and R20 :G10 :B70 ). Results indicated that supplemental lighting with green LEDs (R70 :G10 :B20 ) enhanced vegetative growth and morphology, while blue LEDs (R20 :B80 ) increased the mineral and vitamin contents. Interestingly, by linking the nutritional content with the growth yield to define the optimal LEDs setup, we found that the best lighting to promote the microgreen growth was the green LEDs combination (R70 :G10 :B20 ). Remarkably, under the green LEDs combination (R70 :G10 :B20 ) conditions, the microgreens of Kohlrabi purple, Cabbage red, Broccoli, Kale Tucsan, Komatsuna red, Tatsoi and Cabbage green, which can benefit human health in conditions with limited food, had the highest growth and nutritional content.

Agricultural Biochemistry Department Faculty of Agriculture Zagazig University Zagazig 44519 Egypt

Agronomy Department Faculty of Agriculture Zagazig University Zagazig 44519 Egypt

Biochemistry Department Faculty of Agriculture Cairo University Cairo 12613 Egypt

Botany Department Faculty of Science Tanta University Tanta 31527 Egypt

Deanship of Scientific Research Umm Al Qura University Makkah Saudi Arabia

Department of Environmental Biology Centro de Investigaciones Biológicas Ramiro de Maeztu 9 Madrid 28040 Spain

Department of Molecular Biology Centre of the Region Haná for Biotechnological and Agricultural Research Faculty of Science Palacký University Olomouc Czech Republic

Department of Plant production Faculty of Environmental and Agricultural Sciences Arish University Arish Egypt

Ornamental Horticulture Department Faculty of Agriculture Cairo University Cairo 12613 Egypt

Plant Pathology Department Faculty of Agriculture Zagazig University Zagazig 44519 Egypt

Sainsbury Laboratory University of Cambridge Cambridge UK

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