5. Conclusions
The present study shows that the addition of G to the combined spectrum of R and B LEDs promoted the growth of potato plantlets in vitro. Additionally, R660 was more advantageous for the growth of potato plantlets in vitro than R630. Compared with other treatments,R660BG produced more vigorous potato plantlets in vitro, and it would be beneficial to use an R660BG spectrum in the cultivation of potato plantlets in the greenhouse.