Variation in the aggressiveness of Phytophthora infestans pathotypes collected from different potato fields of Khyber Pakhtunkhwa (Pakistan). | [International Journal of Agriculture and Biology • 2014]

Author(s):

1. Abdul-Majeed: Department of Botany, Hazara University, Mansehra, Khyber Pakhtunkhwa, Pakistan

2. Zubeda Chaudhry: Department of Botany, Hazara University, Mansehra, Khyber Pakhtunkhwa, Pakistan

3. Zahir Muhammad: Department of Botany, University of Peshawar, Khyber Pakhtunkhwa, Pakistan

Abstract:

Ten single lesion isolates of Phytophthora infestans collected from naturally late blight infected fields of different regions of the Khyber Pakhtunkhwa province during 2011 were characterized for aggressiveness based on their infection frequency, latent infection period, lesion area, lesion expansion rate and relative area under lesion expansion curve after their inoculation onto detached leaflets of potato cultivar Desiree. Significant variations were observed among different isolates originating from different locations for their aggressiveness potential and epidemiological components. Aggressiveness level determined on composite aggressiveness indices was also variable for the studied isolates. The study indicated that population of P. infestans in the Khyber Pakhtunkhwa province comprises diverse isolates with low to high aggressiveness potentials as measured by the epidemiological components.

Page(s): 807-812

DOI: DOI not available

Published: Journal: International Journal of Agriculture and Biology, Volume: 16, Issue: 4, Year: 2014

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