THE EFFECT OF DIFFERENT SPECTRUM ARTIFICIAL LIGHTING ON FOUR TOMATO SEEDLINGS HYBRIDS
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We evaluated the reaction of seedlings of tomato hybrids of different maturation to artificial lighting of different spectral compositions in the laboratory of artificial climate in Russian State Agrarian University- Timiryazev, four tomato hybrids (Captain F1, Rafinad F1, Coral Reef F1, and Fire F1), seven lighting treatments (red, green, blue, white, green + blue, blue + red and green + red) with a two-factor design of the factorial experiment (hybrids – factor A and radiation – factor B) according to the randomized complete block design in four repetitions were used. The effect of dual lighting treatments on plants was more pronounced compared to monochromatic light in plant height, the net assimilation rate (NAR) and fresh weight of leaves. The green + red (G+R) treatment provided the higher indicator of plant height (19.46 cm). The blue + red (B+R) treatment, the higher indicators were fresh weight of leaves and NAR
(6.57 g.plant-1, and 3.82 g.m2 -1.d) respectively. Monochromatic red (R) contributed most to the increase in fresh weight of stem (4.61g.plant-1) and total leaf area (244.00 cm2.plant-1). Hybrid Captain F1had the highest fresh weight of stem and leaves, and total leaf area. The Fire F1 hybrid gave the highest plant height and net assimilation rate.
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Copyright (c) 2023 Maad N. Al-Rukabi, V. I. Leunov, T. A. Tereshonkova (Author)
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