Back to Contents

FREE FULL TEXT PDF

PATHOGENICITY SPECTRUM OF XANTHOMONAS CAMPESTRIS PV. CITRI STRAINS IN PAKISTAN

M.A. AKHTAR, M.H. RAHBER-BHATTI* AND M. ASLAM

Abstract: Relative aggressiveness of eight strains of Xanthomonas campestris pv. citri was tested on detached citrus leaves at 22°C and of another seven at 24°C. An the strains showed variability in their relative aggressiveness as measured through development of lesions. Number of lesions produced by any strains was significantly affected by the strain: cultivar interaction thus indicating host parasite specificity for this character. Three levels of aggressiveness i.e. high, intermediate and low aggressiveness were noticed among the strains.

Crop Diseases Research Institute, National Agricultural Research Centre, Islamabad, Pakistan.
Department of Plant Pathology, Sindh Agricultural University, Tandojam, Pakistan.