Optimization of light conditions for growing well-improved potatoes in the laboratory

Abstract

The paper examined the impact of different lighting sources on the growth and development of the Antonina and Solnechnyi potato varieties, grown in vitro. The object of the experiment was pathogen free parent micro clones of potatoes, derived from apical meristem by cultivation in the standard Murashige and Skoog medium with modifications. The following sources of light were used: OSRAM luminescent lamps, with the predominant red and blue, power 36 W; OSRAM luminescent lamps, cold daylight, power 36 W; TELEFUNKEN linear light-emitting-diode (LED)lamps - 4200 K, white light, power 18W; linear LED lamps TELEFUNKEN - 2700 K, warm white light, power 18 W; LED lamps red-blue, diodes ratio 3:1, power 32 W and LED lamps full-spectrum, power 32 W. The effect of these lighting sources on the length of plants, time of root emergence, number of leaves / internodes, mass of the plants and leaves, shoots and roots, and the surface area of the leaf plate was studied. The operating costs for the studied lighting sources was calculated. It was discovered that for the cultivation of the test tube plants varieties Antonina and Solnechnyi with the aim to obtain the maximum number of new test plants, LED lamps 2700 K are the most suitable ones. For the cultivation of test plants of the chosen varieties to prepare them for further transplantation on aero-hydroponic system for producing mini tubers, full-spectrum LED lamps are recommended.