Abstract

ESPITIA, Miguel; CARDONA, Carlos  and  ARAMENDIZ, Hermes. SEED GERMINATION TESTS OF NATIVE FOREST SPECIES OF CORDOBA, COLOMBIA IN LABORATORY AND GREENHOUSE. rev.udcaactual.divulg.cient. [online]. 2016, vol.19, n.2, pp.307-315. ISSN 0123-4226.

The objective of this study was to evaluate the germination of seeds of five native forest species of Córdoba: Cedrela odorota, Cariniana pyriformis, Bombacopsis quinata, Anacardium excelsum and Schizolobium parahybum. The study was conducted between April of 2013 and May of 2014 at the Laboratory of Plant Breeding at the Universidad de Córdoba. A completely randomized design was used in each environment: germination chamber and greenhouse with five forest species as treatments and four replicates of 50 seeds each. All seeds were immersed in distilled water at room temperature of 27°C for 24 hours before planting. The parameters germination percentage (GP), germination speed index (GSI), mean daily germination (MDG), peak value (PV) and germination value (GV) were estimated and compared. The results showed statistical differences between species and interaction species x germination environments in combined analysis of variance for germination physiological parameters evaluated, except for PG. The values of germination parameter estimated were higher in germination chamber, with increases between 48.2% and 124.2% in MDG and GV, respectively. A excelsum showed the greatest differences between species in two germination environments in all parameters estimated, while B quinata showed minor differences. It is recommended to estimate the parameters in germination chambers, instead of greenhouse, whenever this equipment is available.

Keywords : Trees species; germination chamber; germination parameters.

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