Nghiên cứu nhân giống hữu tính cây bá bệnh (Eurycoma longifolia jack.)

Abstract

The research was on propagating Eurycoma longifolia Jack. in a garden in Kien Giang. The seeds taken out of the fully ripen fruits dried to 9% moisture, then soaked in warm water (at 54⁰C) for 8 hours, and treated with 1000 ppm GA3 solution for 30 minutes made the highest germination rate (93.3%). The germination peaked after 38 days and finished after 90 days. Potting medium consisted either with 50% pith coco, or 20% pith coco and 1% phosphate, or 20% pith coco and 1% phosphate for outplanting rate ranged from 90.8% - 98.5%. The most suitable time for the propagation were May and August with the germination rate of 73.3% - 80.0%. The seedlings were fertilized with NPK 15-15-15 and TE at 0.2% or DT 501 and TE at 0.2% . The plants growing of 210 to 240 days had the highest post-planting survival rate (95.3 – 96.8%).