Abstract
Simple media composed of different commercial fertilizers available in the market and natural substances were formulated in order to reduce medium cost and germination period of orchid seeds. The 15 formulated media were tested for germinating Dendrobium orchid seeds and compared with Murashige and Skoog (MS) medium. The development of orchid seeds to protocorm was observed over 1 month on the W1 medium composed of 1.35 g/L of Weethong fertilizer (20-20-20), MS micronutrients and 30 g/L of sugar; while the germination of seeds on the P1 and Z1 media composed of 2 g/L of Pokon (21-21-21) and 2.5 g/L of Zingnong fertilizer (15-15-10) respectively, was not found. Additionally, the supplement of coconut water and/or banana in those formulated media was found to promote more complete development of orchid plantlets. The results obtained here indicated at least 7 formulated media which can be used as simple media for the germination of orchid seeds.
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