Article | 06. 2016 Vol. 34, Issue. 3
Effects of Photoperiod, Light Intensity and Electrical Conductivity on the Growth and Yield of Quinoa (Chenopodium quinoa Willd.) in a Closedtype Plant Factory System

Major of Horticultural Science, Jeju National University1
Major of Plant Resources and Environment, Jeju National University2
Research Institute for Subtropical Agriculture and Animal Biotechnology, Jeju National University3

2016.06. 405:413


Quinoa (Chenopodium quinoa Willd.) is a plant native to the Andean region that has become increasing popular as a food source due to its high nutritional content. This study determined the optimal photoperiod, light intensity, and electrical conductivity (EC) of the nutrient solution for growth and yield of quinoa in a closed-type plant factory system. The photoperiod effects were first analyzed in a growth chamber using three different light cycles, 8/16, 14/10, and 16/8 hours (day/night). Further studies, performed in a closed-type plant factory system, evaluated nutrient solutions with EC (salinity) levels of 1.0, 2.0 or 3.0 dS·m-1. These experiments were assayed with two light intensities (120 and 143 μmol·m-2·s-1) under a 12/12 and 14/10 hours (day/night) photoperiod. The plants grown under the 16/8 hours photoperiod did not flower, suggesting that a long-day photoperiod delays flowering and that quinoa is a short-day plant. Under a 12/12 h photoperiod, the best shoot yield (both fresh and dry weights) was observed at an EC of 2.0 dS·m-1 and a photosynthetic photon flux density (PPFD) of 120 μmol·m-2·s-1. With a 14/10 h photoperiod, the shoot yield (both fresh and dry weights), plant height, leaf area, and light use efficiency were higher when grown with an EC of 2.0 dS·m-1 and a PPFD of 143 μmol·m-2·s-1. Overall, the optimal conditions for producing quinoa as a leafy vegetable, in a closed–type plant factory system, were a 16/8 h (day/night) photoperiod with an EC of 2.0 dS·m-1 and a PPFD of 143 μmol·m-2·s-1.

1. Akmal M, Janssens MJJ (2004). Productivity and light use efficiency of perennial ryegrass with contrasting water and nitrogen supplies. Field Crops Res 88:143-155. doi:10.1016/j.fcr.2003.12.004  

2. Bertero HD (2001) Effects of photoperiod, temperature and radiation on the rate of leaf appearance in quinoa (Chenopodium quinoa Willd.) under field conditions. Ann Bot 87:495-502. doi:10.1006/anbo.2000.1362  

3. Bertero HD, King RW, Hall AJ (1999a) Modelling photoperiod and temperature responses of flowering in quinoa (Chenopodium quinoa Willd.). Field Crops Res 63:19-34. doi:10.1016/S0378-4290(99)00024-6  

4. Bertero HD, King RW, Hall AJ (1999b) Photoperiod-sensitive development phases in quinoa (Chenopodium quinoa Willd.). Field Crops Res 60:231-243. doi:10.1016/S0378-4290(98)00128-2  

5. Carlo F, Youssef R, Elvira R, Alberto B, Giuseppe C (2009) Nutrient solution concentration and growing season affect yield and quality of Lactuca sativa L. var. acephala in floating raft culture. J Sci Food Agri 89:1682-1689. doi:10.1002/jsfa.3641  

6. Carrasco G, Ram rez P, Vogel H (2007) Effect of the electrical conductivity of the nutrient solution on yield and essential oil in basil grown by NFT. IDESIA (Chile) 25:59-62  

7. Cho YY (2004) Modeling of growth and yield of hydroponically grown pak-choi plants (Brassica campestris L. ssp. chinensis Jusl.). Ph.D. Diss., Seoul National University, Seoul, Korea  

8. Cho YY, Choi KY, Lee YB, Son JE (2012) Growth characteristics of sowthistle (Ixeris dentata Nakai) under different levels of light intensity, electrical conductivity of nutrient solution, and planting density in a plant factory. Hortic Environ Biotechnol 53:368-372. doi:10.1007/s13580-012-0691-1  

9. Costa PC, Didone EB, Sesso TM, Ca izares KAL, Goto R (2001) Electrical conductivity of nutrient solution and hydroponic crisp-head lettuce yield. Sci Agric 58:595-597. doi:10.1590/S0103-90162001000300023  

10. D’Anna F, Miceli A, Vetrano F (2003) First results of floating system cultivation of Eruca sativa L. Acta Hortic 609:361-364. doi:10.17660/ActaHortic.2003.609.54  

11. Gawlik-Dziki U, wiecaa M, Sułkowski M, Dziki D, Baraniaka B, Czyz J (2013) Antioxidant and anticancer activities of Chenopodium quinoa leaves extracts–In vitro study. Food Chem Toxicol 57:154-160. doi:10.1016/j.fct.2013.03.023  

12. Gesinski K (2008) Evaluation of the development and yielding potential of Chenopodium quinoa Willd. under the climatic conditions of Europe. Part Two: Yielding potential of Chenopodium quinoa under different conditions. Acta Agrobot 61:185-189. doi:10.5586/aa.2008.026  

13. Kitaya Y, Niu G, Kozai T, Ohashi M (1998) Photosynthetic photon flux, photoperiod, and CO2 concentration affect growth and morphology of lettuce plug transplants. HortScience 33:988-911  

14. Kowalczyk K, Gajc-Wolska J, Rutkowska M (2012) Effect of the nutrient solution electrical conductivity (EC) on the growth, development and quality of endive (Cichorum endivia L.) cultivate under covers. Acta Hortic 927:339-344. doi:10.17660/ ActaHortic.2012.927.40  

15. ee JH, Heuvelink E (2003) Simulation of leaf area development based on dry matter partitioning and specific leaf area for cut chrysanthemum. Ann Bot 91:319-327. doi:10.1093/aob/mcg015   

16. Morimoto T, Torii T, Hashimoto Y (1995) Optimal control of physiological processes of plants in a green plant factory. Control Eng Pract 3:505-511. doi:10.1016/0967-0661(95)00022-M  

17. Park KW, Won JH, Chiang MH (1995) Effects of nutrient solution and ionic strength on growth in chicory. Acta Hortic 396:187-194. doi:10.17660/ActaHortic.1995.396.22  

18. Pa ko P, Barto H, Zagrodzki P, Gorinstein S, Fołta M, Zachwieja ZZ (2009) Anthocyanins, total polyphenols and antioxidant activity in amaranth and quinoa seeds and sprouts during their growth. Food Chem 115:994-998. doi:10.1016/j.foodchem.2009.01.037  

19. Qin L, Guo S, Ai W, Tang Y (2008) Selection of candidate salad vegetables for controlled ecological life support system. Adv. Space Res. 41:768-772. doi:10.1016/j.asr.2007.09.037  

20. Ruiz RA, Bertero HD (2008) Light interception and radiation use efficiency in temperate quinoa (Chenopodium quinoa Willd.) cultivars. Eur J Agron 29:144-152. doi:10.1016/j.eja.2008.05.003  

21. Sarooshi RA, Cresswell GC (1994) Effects of hydroponic solution composition, electrical conductivity and plant spacing on yield and quality of strawberries. Aust J Exp Agri 34:529-535. doi:10.1071/EA9940529  

22. Schlick G (2000) Nutritional characteristics and biomass production of Chenopodium quinoa grown in controlled environments. M.S. Theses. San Jose State University, California, USA  

23. Seo MW, Yang DS, Kays SJ, Kim JH, Woo JH, Park KW (2009) Effects of nutrient solution electrical conductivity and sulfur, magnesium, and phosphorus concentration on sesquiterpene lactones in hydroponically grown lettuce (Lactuca sativa L.). Sci Hortic 122:369- 374. doi:10.1016/j.scienta.2009.06.013  

24. Shabala S, Hariadi Y, Jacobsen SE (2013) Genotypic difference in salinity tolerance in quinoa is determined by differential control of xylem Na+ loading and stomatal density. J Plant Physiol 170:906-914. doi:10.1016/j.jplph.2013.01.014  

25. Udagawa Y (1995) Some responses of dill (Anethum graveolens) and thyme (Thymus vulgaris) grown in hydroponics, to the concentration of nutrient solution. Acta Hortic 396:203-210. doi:10.17660/ActaHortic.1995.396.24   

26. Wu M, Kubota C (2008) Effects of high electrical conductivity of nutrient solution and its application timing on lycopene, chlorophyll and sugar concentrations of hydroponic tomatoes during ripening. Sci Hortic 116:122-129. doi:10.17660/ActaHortic.1995.396.24