Resumen

BALAGUERA, Helber Enrique; ALVAREZ, Javier Giovanni  y  CARDENAS, Julián. EFFECT OF STRATIFICATION AND PLASTIC COVER ON PURPLE PASSION FRUIT (Passiflora edulis Sims.) SEEDS TO OBTAIN SEEDLINGS. rev.udcaactual.divulg.cient. [online]. 2010, vol.13, n.2, pp.89-97. ISSN 0123-4226.

Due to the rise of purple passion fruit and its economic importance in Colombia it is necessary to improve the production techniques of this crop. The purple passion fruit is propagated commercially by seeds, but its coat is very hard, with a high impermeability causing problems for germination and germination forcing, which complicates propagation and seedlings uniformity. In order to achieve good quality material for transplantation, in a completely randomized bifactorial design of 4x2, purple passion fruit seeds were stratificated at 4°C for 0, 360, 720 and 1440 hours, covering with and without black plastic mulch at planting for 15 days, for a total of eight treatments. Seedlings were planted in trays of 72 cavities REF. A-BA72; the experiment lasted 60 days and was conducted under greenhouse conditions. Germination was activated only with the treatments of 360 and 720 h and 15 days of covering with black plastic and 360 h without black plastic. The highest germination percentage and average germination speed and plant height were observed in the treatment of 360 h stratification and 15 days of covering with black plastic. The combination of cold and black plastic is considered complementary for optimum germination. The seeds, 720 h stratificated, with 15 days covered with plastic showed the largest average emergency time, but generated seedlings with the largest main root.

Palabras clave : Black plastic; cold time; seedlings emergency.

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