Pengaruh IAA dan GA3 terhadap Pertumbuhan Vegetatif Bibit Anggrek Dendrobium Walter Ouemae 4N x Singapore White

Abstract

The objective of the experiment was to study the effect of lAA and GA3 on vegetative growth of Dendrobium orchids. The experiment was carried out using 10 months-old orchid plants, and consists of two treatments, onewithlAA of 0, 30, 60, and 90 ppmandthe other with GA3 of and 100 ppm. The experiment was conducted at Baranang Siang ResearchCentre of Bogor: Agriculture Unuversity. Each treatment was replicated three times. Data were taken on number of leave, height, leaf size, number of roots, and number of pseudobulbs. Application ofIAA up to 90 ppm increasedth e numbero f leaves,l eaf size,h eight,n umbero f roots and numbero f pseudobulbs.A pplicationo f 10 0 ppm GA 3i ncreasedn umbero f leavesa ndn umbero f roots. Application of 90 ppm IAA combined with 100 ppm GA3 significantly increased number of roots and leaf size of orchid plants.