THE SELECTION TECHNIQUE OF BULBIL PORANG (Amorphophallus muelleri Blume) BASED ON GROWTH RESPONSE

Bulbil is a vegetative reproductive organ which is located on center and site of branching of porang leaf. The purpose of this study was to determine growth response between the center bulbil, the 1 st - and 2 nd - branch bulbils . All bulbils were obtained from 2 years old porang which has petiole with height 119.8 – 120 cm . All porang previously were cultivated in Rejosari Village, Bantur District. The harvested Bulbils were grown in a polybag (15x15 cm) which contain mixture of soil, manure, cocopeat and husk charcoal (5:3:1:1). The unit experiment where each type s bulbil was grown has 3 replications . Each replicate consisted of 15 plants. The experiment was organize d by completely random designed. T he ANOVA test was applied to all data. The result showed that differences in source the bulbil in term position (center bulbil, 1 st - and 2 nd - branch bulbils) significantly affected the time for appearance 1 st shoot , germination rate and germination uniformity. The petiole height-diameter and the canopy width of porang plants were affected by source of bulbil as well. The best results for all parameter were given by seeded-bulbil derived from center bulbil . All the bulbil s produce more than one shoots in one planted bulbil. DOI: http://dx.doi.org/10.21776/ub.jeest.2019.006.01.5