Resumo

JUAREZ-HERNANDEZ, Ma. de Jesús; MARTINEZ-SOLIS, Juan; CURIEL-RODRIGUEZ, Arturo  e  GRACIA-SANTOS, Alejandro. Yellow calla lily seedling production (Zantedeschia elliottiana Engl.) in different substrates. Rev. Mex. Cienc. Agríc [online]. 2011, vol.2, n.spe3, pp.495-507. ISSN 2007-0934.

Zantedeschia elliotiana Engl. is a deciduous herbaceous plant native from Africa with ornamental potential for garden, cutting flower and pot plant. Studies in ornamental species have confirmed that gibberellic acid (GA₃), improves the emergence percentage and the rate of seedling emergence. This experimental research was established in May, 2008, in a greenhouse located in Chapingo, State of Mexico in order to evaluate the effect of GA₃ at concentrations of 0, 100 and 200 mg L^-1 in six substrates (organic matter, volcanic rock, leaf mold and mixtures of these in pairs equally distributed). The experiment was conducted under a completely randomized design with three replications, using seven seeds for each treatment. The GA₃, was mainly favorable when applied at a concentration of 100 mg L^-1 using as substrate organic matter; however, the highest values of germination percentage and rate of emergence speed is obtained when GA₃ was not applied and using as substrates organic matter with leaf mold or just the last one. It was concluded that, the germination of Z. elliotiana was not fully regulated by physiological processes of gibberellins, because it did not improve significantly the values of the variables evaluated and, the type of substrate it's quite important for seed germination.

Palavras-chave : gibberellic acid; growth regulators; substrates.

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