Seed characterization and germination morpho-physiology of Simira gardneriana (Rubiaceae)

Abstract: Simira gardneriana (Rubiaceae) is a newly discovered tree species endemic to the Caatinga. For this reason, studies aimed at propagation, seed and seedlings analysis are essential for morphology, identification, classification, conservation. Our objective was characterize seeds, morpho-physiology of germination seedling establishment S. gardneriana. Therefore, we performed physical, biometric, biochemical, morphological characterization as well an evaluation process establishment. Hydration seeds carried out by three methods (immersion in water, on wire mesh, between paper rolls) two temperatures (25 30 °C). Morphological substrate °C 28 days. Seeds orthodox, amylo-lipid, have endosperm do not exhibit physical dormancy. can be achieved roll with root protrusion sixth day, complete formation 28th day after sowing. Seedlings phanero-epigeal cotyledonous photosynthetic cotyledons ability regrow system. Characterization contributes its propagation may help subsequent taxonomic phylogenetic Rubiaceae.