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. 2016 May 6;11(5):e0155298. doi: 10.1371/journal.pone.0155298

Fig 1. The scheme of cultivation devices used in this experiment.

Fig 1

(A) The hydroponic seedling raising device: 1. plastic wrap; 2. moist paper towel; 3. perforated filter paper; 4. plastic box and its lid; 5. nutrient solution; 6. pregerminated cucumber seed; (B) The regulation system for air and root-zone (RZ) temperature: 7. fluorescent lamps; 8. air temperature thermocouple; 9. growth chamber; 10. polystyrene foam box; 11. water temperature thermocouple; 12. electrothermal rod; 13. circulating pump; 14. semiconductor refrigerator.