Journal of Pure and Applied MicrobiologyVol. 9 No. 2

Salicylic Acid as Inducer of Resistance against Chilli Fruit Rot Pathogen Colletotrichum capsici

Neelam Geat*, Manjunatha B.S.1, Rajendra Prasad Meena2 and S.K. Khirbat3

1Division of microbiology, Indian Agricultural Research Institute New Delhi- 110012, India. 2National Research Centre on Plant Biotechnology, Indian Agricultural Research Institute, New Delhi- 110012, India. 3Department of Plant Pathology, CCS Haryana Agricultural University Hisar - 125 004, India.

Received on 29 January 2015 and accepted on 10 March 2015

 

ABSTRACT

Studies were conducted to test the efficacy of different non-conventional chemicals against Colletotrichum capsici under ?in vitro and screen house conditions at Department of Plant Pathology, CCS Haryana Agricultural University, Hisar. Inhibition of spore germination inhibition method was followed for in vitro assay while foliar spray on red fruits of chilli followed by pathogen inoculation by pin prick method was adopted for assessing efficacy under screen house conditions. The pathogen, C. capsici was found most sensitive to salicylic acid among different non-conventional chemicals tested under in vitro conditions while under screen house conditions, salicylic acid at the concentration of 5mM induced resistance in plants and gave 67.86 and 78.63 per cent disease control in susceptible (Pusa jwala) and resistant (Pusa Sadabahar) variety, respectively over check.

Keywords : Chilli, Colletotrichum capsici, non-conventional chemicals, salicylic acid.