Detection of bacterial pathogens in seeds of wheat, paddy and cotton in Pakistan
2002
Akhtar, M.A. (National Agricultural Research Centre, Islamabad (Pakistan). Crop Diseases Research Inst.) | Bhutta, M.R.
Six hundred and eighty seed samples of wheat, paddy and cotton were collected from major crop growing areas tested for seed-borne bacterial pathogens. Thirty one wheat, seed samples, out of 351 samples were found infected by Xanthomonas campestris pv. translucens. By dilution plate method, the highest number of infected wheat samples was found in variety Pak-81. Using the seedling symptom technique, maximum infection in paddy seeds was 7.5% in B-385 from Sahiwal and 11.0% in IRRI-6 from Lahore with X. campestris pv. oryzae. Infection by Pseudomonas avenae was 13.0% in B-385 and 40% in IRRI-6. Out of 221 seed cotton samples tested, 28 were found infected with bacteria. Using standard pathogenicity test, the bacteria isolated from the seeds were confirmed to be seed-borne pathogens.
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