Abstract

SUAREZ, DIEGO; FERNANDEZ ALONSO, JOSÉ LUIS  and  MELGAREJO, LUZ MARINA. Effect of Light and Giberellic Acid (AG3) on the Germination of Minthostachys mollis Kunth. Griseb. (Labiatae). Acta biol.Colomb. [online]. 2011, vol.16, n.2, pp.149-154. ISSN 0120-548X.

Minthostachys mollis (Kunth) Griseb., is a perennial shrub that grows in the Andean region of Colombia; this species is widely used by rural communities where it is valued for its medicinal properties. The aim of this study was to determine the effect of light (red light, white light, and natural light) and gibberellic acid (0, 5, 15, 25 ppm) on the process of germination of M. mollis. We found a strong inhibition of germination under conditions of darkness. We do not observe effect of AG3 on germination. The germination percentages obtained were above 80% (positive photoblastic seeds) for the three proposed lighting treatments where red-light treatment had a most significant effect on the germination process.

Keywords : gibberellic acid; red light; photoblastic seeds; nutlets.

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