Crescimento, teor e composição do óleo essencial de melissa cultivada sob malhas fotoconversoras
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Data
2009-08
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Resumo
The use of color shading nets for cultivation of
some ornamentals and vegetables has become common. Thus, observing the great influence of the solar radiation on the
plant physiology, the objective of this research was to evaluate
the the quantity and quality effects of spectral light transmitted
through color shading nets (Chromatinet®) in Melissa officinalis
L., including physiological aspects as:growth ,content and
chemistry composition. Four treatments and five replications
were disposed in a completely randomized design, being each
experimental unit composed by four pots (one plant per pot).
The treatments were lemon balm’s plants cultivated under full
sunshine, black shading net (50%), red shading net (50%)
and blue shading net (50%). The characteristics evaluated
were: plant’s height; dry phytomass of leaves, stems, aerial
part, roots and total; root/aerial part ratio; total leaf area; leaf
area ratio; leaf weight ratio; specific leaf area; content, yield
and composition of the essential oil. The utilization of nets
favored the growth organs dry phytomass yield, independently
of the color, in comparison with total sun light. Plants under
red shading had lower content of essential oil and yield, but
they showed the higher content of citral.
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Palavras-chave
Planta medicinal, Luz, Chromatinet®, Citral, Medicinal plant, Light
Citação
BRANT, Renata da Silva et al. Crescimento, teor e composição do óleo essencial de melissa cultivada sob malhas fotoconversoras. Ciência Rural, Santa Maria, v. 39, n. 5, p. 1401-1407, ago. 2009.