Influence of the duration of led lighting on the state of the pigment fund of plas-tids of vegetable pea microgreen
Abstract
The article presents the results of a study of the duration of LED lighting (8, 10, 12, 14, 16 hours) when growing vegetable pea microgreens under light culture conditions in a phytotron equipped with an irradiating rack-type plant FLORA LED 300/2/4 with ten LED lamps DSP08-3x12- 004 UHL4, for the content of photosynthetic pigments (chlorophylls a and b, B-carotene and xanthophylls) in the samples of manufactured products. It was found that the most pronounced activation of the accumulation of both green and yellow plastid pigments in vegetable pea microgreens - by 12-19 % and 33 %, respectively, compared with the control (12-hour exposure), was established at 14- and 16-hour illumination, which contributed to an increase in the content of B-carotene by 51 and 33 %, while 8-hour illumination caused the activation of the accumulation of the latter by only 12 % in the absence of a significant effect on the rate of its biosynthesis of 10-hour illumination. At 14- and 16-hour exposure, the most significant enrichment of pea microgreens with xanthophylls was found in the experiment by 27 and 33 % compared with the control. In accordance with the decrease in the content of plastid pigments in pea microgreens, the following sequence of experiment variants with different illumination durations is indicated:
14 hours > 16 hours > 8 hours > 12 hours > 10 hours.
It was found that the most saturated stock of photosynthetic pigments in the experiment was characterized by microgreen samples at 16 and especially at 14-hour duration of LED lighting, while the most depleted - at 8- and especially at 10-hour duration.
References
- Meng Q, Kelly N, Runkle ES. Substituting green or far-red radiation for blue radiation induces shade avoidance and promotes growth in lettuce and kale. Environmental and Experimental Botany. 2019;162:383-391.
- Анисимов АА. Влияние узкополосного красно-синего освещения на пигментный комплекс некоторых декоративных растений. В: Перспективы развития АПК в работах молодых ученых. Материалы региональной научно-практической конференции молодых ученых. Тюмень, 5 февраля 2014 г. Тюмень: [б. и.]; 2014. с. 8-12.
- Оптимизация светодиодной системы освещения витаминной космической оранжереи. Авиакосмическая и экологическая медицина. 2016;50(3):17-23.
- Zhang X, Bian Z, Yuan X, Chen X. A review on the effects of light-emitting diode (LED) light on the nutrients of sprouts and microgreens. Trends in Food Science & Technology. 2020;99:1-15.
- Andrei Z, Vasilache V, Pintilie O, et al. Blue and Red LED Illumination Improves Growth and Bioactive Compounds Contents in Acyanic and Cyanic Ocimum basilicum L. microgreens. Stoleru T. Molecules. 2017;22(2111):1-14.
- Brazaityte A, Vastakaite-Kairiene V, Virsile A. Changes in mineral element content of microgreens cultivated under different lighting conditions in a greenhouse. Acta Horticulturae. 2018;1227:507-516.
- Brazaityte A. Comparison of LED and HPS illumination effects on cultivation of red pak choi microgreens under indoors and greenhouse conditions. Istanbul, Turkey: 30th International Horticultural Congress. 2020;1287:395-402.
- Kong Y, Zheng Y. Growth and morphology responses to narrow-band blue light and its co action with low-level UVB or green light: A comparison with red light in four microgreen species. Environmental and Experimental Botany. 2020;178(104189):1-11.
- Craver J, Gerovac J, Lopez R, et al. Light Intensity and Light quality from Sole-source Light-emitting Diodes Impact Phytochemical Concentrations within Brassica Microgreens. Journal of the American Society for Horticultural Science. 2017;142(1):3-12.
- Годнев ТН. Хлорофилл: его строение и образование в растении. Минск: Издательство Академии наук БССР; 1963. 318 с.
- Кахнович ЛВ. Фотосинтез. Методические рекомендации к лабораторным занятиям, задания для самостоятельной работы и контроля знаний студентов. Минск: Издательство Белорусского государственного университета; 2003. 88 с.
