EFFECTS OF RED, BLUE AND YELLOW FLUORESCENT FILMS ON PROLIFERATION AND ORGANOGENESIS IN CYMBIDIUM AND PHALAENOPSIS PLB IN VITRO

We assessed the effects of three fluorescent films (red, blue and yellow), that showed different absorption pattern and emission spectra, on the proliferation and organogenesis in protocorm-like bodies (PLBs) of Cymbidium and Phalaenopsis. In the case of C. finlaysonianum, illumination with red, blue and yellow films significantly increased the number and fresh weight of PLBs after 28 days of culture.
In the case of C. Waltz ‘Idol’, illumination with red and yellow films significantly increased the number of PLBs; however, PLB proliferation under blue-film illumination was lower than that in the control group.
In contrast, red-, blue- and yellow-film illumination increased the formation of roots and shoots.
In the case of Phalaenopsis ‘1327’, illumination with red and blue films significantly increased the number of PLBs at 42 days of culture.
However, the formation of roots and shoots was almost completely unaffected by the films.
In conclusion, PLB proliferation or organogenesis in Cymbidium and Phalaenopsis can be controlled by using fluorescent films.

VI International Symposium on Light in Horticulture

K. Hamada, K. Shimasaki, Y. Nishimura, H. Oyama-Egawa, K. Yoshida

fluorescent dyes, light quality, orchid, protocorm like body

https://doi.org/10.17660/ActaHortic.2011.907.63