THE GROWTH RESPONSES OF ORCHID, Phalaenopsis HYBRID TO THE INOCULATION OF Rhizoctonia solani


 The orchid mycorrhizal association is a symbiotic interaction in which both plants and fungi are mutually beneficial. Mycorrhizal increases plant access to soil nutrients especially important for seed germination. Most belong the group Rhizoctonia, including Rhizoctonia solani, well-known pathogen that affects major crop production worldwide but has also been reported be an mycorrhiza. However, no systematic study done investigate type of develops when pathogenic R. solani interact with orchid; whether can alter its become mycorrhizal. Thus, this was conducted determine between Phalaenopsis hybrid effect on growth chlorophyll content hybrid. Sterile ex vitro plantlets were inoculated 4 discs (0.5 cm diameter) isolated from diseased rice tissues, incubated 9 days. root segments used observe fungal hyphae cell. parameters (plant height, leaves length width, number leaves, fresh dry weights) determined at 0, 3, 6, 7, 8, days inoculation. It observed peloton present cells all plants. Severe reduction obtained compared control after 7 These results suggested developed infection as structure cells. reduces hybrids well declined content.