Growth of Tsuru-rindo (Tripterospermum japonicum) culturedin vitro under various sources of light-emitting diode (LED) irradiation |
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Authors: | Heutig Kyu Moon So-Young Park Yong Wook Kim Chan Su Kim |
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Institution: | (1) Istituto di Coltivazioni Arboree, via Celoria 2, Università degli Studi di Milano, I-20133 Milano, Italy |
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Abstract: | We studied the effects of light generated by LEDs on the growth of Tsururindo (Tripterospermum japonicum) shoots.
Apical shoots (2–3 cm long) were cultured on MS basal media supplemented with 3% sucrose, and were maintained for four weeks
under five different light qualities: F (fluorescent lamp), red LED (R), 70% red + 30% blue LED (R7B3), 50% red + 50% blue
(R5B5), or blue LED (B). Rooting was promoted by red light (100%) but was inhibited by blue light. Plant growth, as defined
by root number, fresh weight, and chlorophyll content, was generally healthier for cultures irradiated with mixed LEDs, and
was the best under R7B3. Ventilation resulted in more rapid apical shoot growth and rooting compared with control plants,
when both were treated with the R7B3 system. We demonstrated here that plant growth can be controlled by using LEDs to adjust
for the most effective irradiation conditions, compared with the performance observed when conventional fluorescent lamps
are utilized. |
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