EFFECT OF LEDS LAMPSON STRAWBERRY GROWTH AND DEVELOPMENT DURING EX VITRO ACCLIMATIZATION
Journal Title: Proceedings of Electrotechnical Institute Prace Instytutu Elektrotechniki - Year 2015, Vol 62, Issue 268
Abstract
The effect of artificial lighting, using HPS and LED lamps during acclimatization of strawberry was evaluated. Unrooted strawberry plantlets ‘Pink Rosa’ obtained from in vitro laboratory were planted into growing media consisted of mineral wool granulates, water repellent and water absorbent (50:50 v/v). Plantlets were grown in growth chambers, with high humidity (80-90%), temp. 20-22°C and with artificial lighting using HPS (400 W) and LED lamps, photoperiod 16/8 h (day/night). Two types of LED lamps were used: LED I (Daplon-plus/2011 - emitted, red, blue and far red diodes at ratios 68,5%, 28,4% and 3,1%, respectively) and LED II (LED GrowBox – emitted red and blue light at ratios 8:1). Quantum irradiance was maintained at the same level in all treatments: 50 µmol m [sup]-2[/sup] s[sup]-1[/sup] during the first 3 weeks and later on 100-120 µmol m[sup] -2[/sup] s[sup]-1[/sup]. All plants were fertigated twice a week using the same nutrient solution, contained macro and microelements. Plants were evaluated after 7 weeks of acclimatization. Both LED lamps used in this experiment resulted in greater weight, higher leaf area and better root development comparing to plantlets grown with HPS lamps.
Authors and Affiliations
Jadwiga Treder, Iwona Sowik, Anna Borkowska, Krzysztof Klamkowski, Waldemar Treder
Keywords
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