Abstract
Light-emitting diodes (LEDs) are useful for the growth of many plants, but not known for blueberry species. This study examined the effects of fluorescent lamps and 100 % red, 80 % red plus 20 % blue, 50 % red plus 50 % blue, and 100 % blue LEDs on the growth and development of highbush blueberry shoots under aseptic and non-aseptic conditions. Results revealed that monochromatic blue LEDs accumulated the highest contents of leaf chlorophylls. In contrast, monochromatic red LEDs inhibited chlorophyll accumulation, but produced the longest shoots and roots and provided high percentages of side shoot formation from ex vitro plants. Mixed LEDs, particularly 50 % red plus 50 % blue light, improved plant growth with respect to notably increased shoot and root biomass. Direct rooting of in vitro shoots under non-aseptic conditions was readily achieved using a commercial mixture of perlite and peat moss with high humidity controls. These findings obviously suggest the efficient use of LEDs to replace traditional fluorescent lamps in large-scale propagation of the highbush blueberry, and also pave the way for future studies on LEDs for standardizing micropropagation protocols to shrub crops and woody plants.
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Abbreviations
- B:
-
100 % blue LEDs
- FL:
-
Fluorescent lamps
- LEDs:
-
Light-emitting diodes
- R:
-
100 % red LEDs
- R5B5:
-
50 % red plus 50 % blue LEDs
- R8B2:
-
80 % red plus 20 % blue LEDs
- MS:
-
Murashige and Skoog
- MW:
-
Medium containing 50 % MS plus 50 % WPM
- WPM:
-
Woody Plant Medium
- ZR:
-
Zeatin riboside
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Acknowledgments
This work, as part of a postdoctoral research project, was funded by the Korea Ministry of Trade, Industry and Energy under the Industrial Technology Research Program (No. N0000004) through the LED Agri-Bio Fusion Technology Research Center of the Chonbuk National University, Iksan, South Korea.
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Communicated by J. van Huylenbroeck.
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Hung, C.D., Hong, CH., Kim, SK. et al. LED light for in vitro and ex vitro efficient growth of economically important highbush blueberry (Vaccinium corymbosum L.). Acta Physiol Plant 38, 152 (2016). https://doi.org/10.1007/s11738-016-2164-0
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DOI: https://doi.org/10.1007/s11738-016-2164-0