Evaluación de dos sustratos y tres tratamientos pre-germinativos en semillas de Prunus serotina (Capulí) con seis procedencias en el vivero de la Facultad de Recursos Naturales- ESPOCH.

Abstract

In the present investigation work proposes: to evaluate two substrates and three pre-germinative treatments in Prunus serotine seeds with six origins at Natural Resources Faculty – ESPOCH vivarium ; for this, a trifactorial experimental design was applied with 36 treatments and 3 repetitions, giving a total of 108 experimental units, in which 25 seeds per unit were placed. In this work we recorded data on the emergence percentage, height, neck diameter , leaves number 8 days after the peal, at 30 and 60 days, root length and number of secondary roots. For the emergence percentage, height, neck diameter, leaves number, roots length and number of secondary roots it was found that the best substrate was 1 (black soil 20%, peat 40%, humus 20%, rice husk 10%, agricultural land 10%)presenting an emergency percentage of 100%, a mean for the variable height at 60 days after the peal of 11.84 cm; for the neck diameter 1,64 mm and for the leaves number 8,89; root length 17.67 cm and number of secondary roots 12; Based on the results obtained, it was determined that the best pre-germinative treatment was substrate 1 (black soil 20%, peat 40%, humus 20%, rice husk 10%, agricultural land 10%) plus scarification 2 ( seeds immersion in hot water of 80 to 90 ° C and leave in rest for 24 hours). In what corresponds to the provenance each one stood out the different variables evaluated except the provenance 5 (center) that was located at the end of the media separation tables according to Tukey at 5%. Key Word: SUBSTRATES - PRE-GERMINATIVE TREATMENTS - SEEDS - VIVARIUM