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Influence of nitrogen and potassium fertilization in the aromatic quality in Lilium "Starfighter" flowers

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Authors: G. Salazar-Orozco, M.C. Ruíz-Sánchez, L.A. Valdez-Aguilar, L. Pistelli, C. Ruíz-Olmos y A. Grassotti
Issue: 109-1 (3-12)
Topic: Plant Production
Keywords: Lilium, fertigation, floral scents, secondary metabolites, aromatic compounds.

Lilium "Starfighter" is an ornamental plant with production of secondary metabolites, expressed like as a floral scent and is a mixture of aromatic compounds. The aim of this work was to identify the main aromatic compounds in this floral scent, and the effects of potassium and nitrogen nutrition on their production and concentration. Bulbs of Easter Lily "Starfighter" were cultivated under six treatments of fertigation, divided into two groups, with three replicates each; one group with 12 mM (Control), 5 mM and 1 mM of N and the other with 10 mM, 7 mM (control), 5 mM and 0 mM K; on fresh flowers it was determinated the percentage of production of aromatic compounds by solid phase extraction, and their identification it was made by the library of Adams (2008); in dry was made the determination the contents in percentage of N and K. The floral scent of easter Lily "Starfighter" turns out to be a mixture mainly of low molecular weight compounds as: 1,8 cineole, β-Ocimene, Linalool, Terpineol g-Terpineol, Myrtenyl acetate, 2-Methoxy-p-cresol, Methyl benzoate, 2,4 Demethylbenzaldehyde and Nonanal. The comparison between the contents of N and K in the dry samples with the percentage of aromatic compounds identified, confirm a relationship between nutrition provided and the concentration of some aromatic compounds.

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