MANAGEMENT OPTIONS FOR MINIMIZING ASCOCHYTA BLIGHT (ASCOCHYTA RABIEI) RISK THROUGH NOVEL RESISTANCE SOURCES AND FUNGICIDES IN CHICKPEA (CICER ARIETINUM L.)

khalid Hussain, Niaz Hussain, Abdul Ghaffar, Mohammad Younas, Mohammad Irshad, Muneer Abbas, Farah Shabir, Mohammad Nadeem

Abstract


Chickpea (Cicer arietinum L.) is the second largest pulse crop cultivated worldwide. Ascochyta blight caused by Ascochyta rabiei is the major constraints to chickpea production across the continent including Pakistan. The pathogen Ascochyta rabiei is highly variable. Chickpea cultivars contain limited resistance to pathogen due to their potential for sexual recombination. Investigations were conducted for the identification resistant sources against A.rabiei. Sixty-six chickpea accessions and one susceptible variety were tested against A. rabiei. However, four accessions TG-1427, Star Channa, PARB913/CH03 and PARB913/CH02 showed resistant reaction, eight accessions moderately resistant reaction, eleven accessions developed moderately susceptible reaction whereas twenty two accessions recorded susceptible reaction, moreover remaining twenty one accessions exhibited highly susceptible reaction with maximum ratings ≥ 9. Ten fungicides were tested against A. rabiei at three concentrations (3g, 5g and 7g/liter of water) on the susceptible cultivars (AUG-424). Application of Pyraclostrobin and Azoxystrobin proved most effective and expressed minimum disease incidence 8.37 and 10.97% respectively on comparison to control 77.31%. Results of the present investigation will help the farming community and researchers for timely management of A. blight. Resistant accessions that were identified in this study will be useful for developing blight resistant cultivars.


Keywords


Ascochyta blight, Azoxystrobin, Pyraclostrobin, resistance source and sexual recombination.

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DOI: https://doi.org/10.33866/phytopathol.034.02.0785

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Copyright (c) 2022 Abdul Ghaffar, khalid Hussain, Niaz Hussain, Mohammad Younas, Mohammad Irshad, Muneer Abbas, Farah Shabir, Mohammad Nadeem

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