Pre-germination treatments and different substrates on seed Diels, Ecuador

The objective was to determine the treatments and substrates that show the best behavior in relation to the germination of Juglans neotropica seeds. Five physical treatments were used in experiment one and in experiment two three physical treatments and three substrates were combined with completely randomized designs. Germination was monitored daily from 30 days after sowing. The evaluation was related to the germination capacity and the distribution of germination over time, such as: germination percentage, germination vigor, average germination time, speed coefficient, germination speed index and germination uniformity coefficient. The pre -germination treatments with a temperature of 40 and 50 oC in a stove with forced ventilation for two hours and the control, showed significant differences for all the variables, except the coefficient of uniformity, with respect to the scarification treatments with sanding. The highest accumulated germination percentage, 76%, was reached with pre -germination treatments at a temperature of 40 oC in an oven with forced ventilation for two hours. The interaction of substrates with pre -germination treatments do not show significant differences in the germination variables analyzed. Juglans neotropica seeds show asynchronous germination.