Author(s):

B Rex, J Sheela, M Theradimani, EG Ebenezar, C Vanniarajan and V Swaminathan

Abstract: Anthurium is tropical ornamental plant and it is one of the most valued cut flowers which have a great export potential. Anthracnose or spadix rot disease leads to massive flower loss to anthurium growing farmers. Survey was conducted for anthurium anthracnose disease during 2017-2018 at anthurium growing areas of Tamil Nadu. Maximum disease incidence was observed in Thandikudi (56.66 PDI) and Pandrimalai (54.43 PDI) village of Dindugal district. The fungus C. gloeosporioides was isolated and the morphological variations were studied among the isolates. The result revealed that all the isolates of C. gloeosporioides were circular and wavy pattern and the topography were observed as raised fluffy growth. The I piiboyfgCg1 of Thandikudi isolates recorded 89.12 mm radial mycelial growth with excellent sporulation and least mycelial growth on ICg6 (64.15mm) with poor sporulation. The length of the conidia ranged from10.28-16.28 μm. Highest length of conidia was observed in ICg1 isolates (16.28 μm) followed by ICg10 (15.39 μm). Width of the conidia ranged from 5.77-3.31 μm. Isolate ICg1 recorded the highest width of conidium (5.77 μm) and was followed by ICg10 (5.23 μm).

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