VARIABILITY AMONG ISOLATES OF Fusarium oxysporum f. Sp. UDUM CAUSING PIGEONPEA WILT
Journal Title: International Journal of Microbiology Research - Year 2017, Vol 9, Issue 2
Abstract
Cultural and morphological variability were determined among the eight isolates of Fusarium oxysporum f.sp. udum. The colony diameter ranged from 80.00 to 90 mm after nine days of incubation at 28 ± 1ºC. The size of macroconidia ranged from 16.5 to 20.6 μm (18.47 μm) × 2.1 to 4.1 μm (2.98 μm) in RFU to 24.0 to 37.0 μm (30.24 μm) × 2.6 to 4.0 μm (3.52 μm) in BeFU. The size of microconidia varied from 4.9 to 11.8 μm (8.10 μm) × 2.2 to 4.0 μm (2.98 μm) in BeFU to 8.3 to 17.4 μm (12.94 μm) × 2.5 to 5.8 μm (4.0 μm) in RFU. The macro conidia were 1 to 4 septate, fusaroid to sickle shaped. The shape of chlamydospores varied from round in KoFU, RFU, RjFU and BeFU isolates to oval in isolate RgFU and long oval in KFU, MFU and DFU. The size of round chlamydospores ranged from 3.8 to 4.7 μm in RFU to 6.4 to 8.7 μm in diameter in RjFU and long oval chlamydospores were 11 to 13 × 3 to 4 μm in MFU to 19 to 21 × 4 to 5 μm (Length × Breadth) in DFU.
Authors and Affiliations
SANTRAM SAHU
Keywords
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