AMBIENTUM BIOETHICA BIOLOGIA CHEMIA DIGITALIA DRAMATICA EDUCATIO ARTIS GYMNAST. ENGINEERING EPHEMERIDES EUROPAEA GEOGRAPHIA GEOLOGIA HISTORIA HISTORIA ARTIUM INFORMATICA IURISPRUDENTIA MATHEMATICA MUSICA NEGOTIA OECONOMICA PHILOLOGIA PHILOSOPHIA PHYSICA POLITICA PSYCHOLOGIA-PAEDAGOGIA SOCIOLOGIA THEOLOGIA CATHOLICA THEOLOGIA CATHOLICA LATIN THEOLOGIA GR.-CATH. VARAD THEOLOGIA ORTHODOXA THEOLOGIA REF. TRANSYLVAN
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Authors: LIVIU BURESCU, DORINA CACHIŢĂ-COSMA, CONSTANTIN CRĂCIUN.
The lighting of plant vitrocultures using white LEDs expecially the ones of ultrabright type is recomended because – as resulted from the experiments performed in this study, under septic or vitroculture conditions, with Robinia pseudoacacia L. seeds and with plants resulted from these – it was shown that compared with red, yellow, green and especially blue light, under white light the organ growth and assimilating pigments synthesis was stimulated. Furthermore the endocellular substances metabolisation was also accelerated. Among other types of light emited by LEDs, only the yellow light has stimulated the increase in the values of the parameters that were investigated. This has favored, in the 40st day of germination the growth of the stemlet in the septic cultures even as high as 51% compared to the control (100% plantlets under white light LEDs).
Keywords: germination, growth LEDs lighting, plantlets, Robinia pseudoacacia.
