Use este identificador para citar ou linkar para este item: http://repositorio.ufla.br/jspui/handle/1/42740
Título: Effect of light and sucrose on photoautotrophic and photomixotrophic micropropagation of Physalis angulata
Palavras-chave: Applied botany
Small fruit crops
Plant tissue culture
Photopigments
Ecological anatomy
Botânica aplicada
Culturas de pequenos frutos
Fotopigmentos
Data do documento: Jul-2020
Editor: Universidade Federal de Uberlândia
Citação: SANTOS, G. C. et al. Effect of light and sucrose on photoautotrophic and photomixotrophic micropropagation of Physalis angulata. Bioscience Journal, Uberlândia, v. 36, n. 4, p. 1353-1367, July/Aug. 2020.
Resumo: The biotechnological interest in genus Physalis has increased in the last decades, however, there are still few micropropagation studies of this genus. The objective of this study was to evaluate P. angulata photoautotrophic and photomixotrophic micropropagation with gas exchange under seven light spectra and five concentrations of sucrose. Lighting were yellow, blue, white, red, green, red + blue LEDs and natural light filtered by mesh. Sucrose concentrations were 0, 7.5, 15, 22.5 and 30 g.L-1. Phytotechnical, anatomical features and photopigment contents were evaluated through stem and root segment length, leaf number, leaf area, chlorophyll a and b contents, carotenoids, adaxial epidermis, palisadic and spongy parenchyma and abaxial epidermis. The data were compared by Scott-Knott's mean test and principal components analysis using the R software. Comparing the variables within lighting types, it was observed that only the screen treatment, screen-filtered natural illumination, obtained assessment in all variables. Comparing the levels of sucrose, it was observed that the treatment 15 g.L-1 sucrose obtained the highest number of averages with maximum evaluation. It was concluded that the natural light filtered by screen with 50% of shading allowed the photoautotrophic micropropagation of P. angulata. Better development results were observed in photomixotrophic micropropagation with 15 g.L-1 of sucrose.
URI: http://repositorio.ufla.br/jspui/handle/1/42740
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