Data di Pubblicazione:
1993
Abstract:
The morphogenic effect of different light wavelengths on in vitro rooting of Prunus insititia GF655-2 in
relation to the presence of napthaleneacetic acid (NAA) in the culture medium was investigated.
Results of experiments in which plantlets were rooted in NAA enriched medium showed that the
presence of auxin induced rooting even in the dark after an initial lag period. Illumination of the
cultures with Red light was as effective in promoting rooting as treatment with 0.5/~M NAA; Red was
more active in stimulating rooting in the short term than was NAA. The pattern of root formation
resulting from the addition of NAA appeared to dominate development under White, Blue and Far
Red treatments. Although it was possible to correlate the rooting response to the phytochrome
photoequilibrium induced by the light treatments used, there arises a possible interference of specific
Blue absorbing photoreceptors.
relation to the presence of napthaleneacetic acid (NAA) in the culture medium was investigated.
Results of experiments in which plantlets were rooted in NAA enriched medium showed that the
presence of auxin induced rooting even in the dark after an initial lag period. Illumination of the
cultures with Red light was as effective in promoting rooting as treatment with 0.5/~M NAA; Red was
more active in stimulating rooting in the short term than was NAA. The pattern of root formation
resulting from the addition of NAA appeared to dominate development under White, Blue and Far
Red treatments. Although it was possible to correlate the rooting response to the phytochrome
photoequilibrium induced by the light treatments used, there arises a possible interference of specific
Blue absorbing photoreceptors.
Tipologia CRIS:
01.01 Articolo in rivista
Keywords:
blue light photoreceptors; light quality; micropropagation; NAA; phytochrome; rhizogenesis
Elenco autori:
Baraldi, Rita; Rossi, Federica
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