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RELATIONSHIP BETWEEN VERTICILLIUM ALBOATRUM STRAIN MORPHOGENESIS AND MOLECULAR FINGERPRINTS

A. H. SHAIKH AND J. B. HEALE*

Abstract: Morphological characteristics of three different groups of isolates of Verticillium alboatrum which had previously been differentiated on the basis of rDNA polymorphism and mtDNA RFLPS, were studied. Nature and extent of variability differed between different groups of isolates. Statistically significant differences were observed in mean phialide count (MPC), mean phialide size (MPSz) and mean interverticil distance (MIVD), among groups of V. alboatrum. Highest MPC was noticed in group 1b (3.21) as compared to lowest in group 1a (2.10). The MPSz was largest in group 1a (47.40 µm) and lowest in group 2 (31.19 mm). Highest MIVD was observed in group 1a and group 2 (50.40 and 49.37 mm, respectively) with lowest in group 1b and group 3 (36.6 and 38.47 µm, respectively).

Department of Botany, Federal Urdu University of Arts, Sciences & Technology Gulshan-e-Iqbal Campus, Karachi-75300, Pakistan.
Department of Microbial Physiology, Division of life sciences, King's College London, UK