DIFFERENT TYPES OF LIGHT IN THE PRODUCTION OF CORIANDER SEEDLINGS

• DOI: 10.22533/at.ed.813332327031

• Palavras-chave: Coriandrum sativum, light quality, light photons, LED's

• Keywords: Coriandrum sativum, light quality, light photons, LED's

• Abstract:

  The objective of this work was to evaluate different types of light in the production of coriander seedlings cultivar Verdão. The seeds were sown in trays containing Carolina Soil® vegetal substrate and maintained in a growth chamber with a 16-hour photoperiod and a light intensity of 25 µmol m^-2 s^-1. The treatments were blue LEDs, green LEDs, red LEDs and a control consisting of no artificial light.   The experimental design used was entirely randomized with ten repetitions. After 30 days, plant height, number of leaves, root length, and fresh mass of the aerial and root parts were evaluated. The data obtained were submitted to variance analysis, and the means were compared using the Tukey test at 5% probability of error. The seedlings grown under the blue LEDs showed a greater number of leaves (24 leaves) than those kept under green LEDs. The greatest root length (10.65 cm) was obtained under the blue LEDS, followed by the red LED (8.45 cm). Regarding the fresh mass of the aerial part, the highest averages were obtained under the blue LEDs and red LEDs, which did not differ from each other. As for the root fresh mass variable, the highest averages were obtained under the blue LED and the red LED. The height of the coriander seedlings was not influenced by the type of light.