Standardization of screening technique for root rot disease (Macrophomina phaseolina) of castor
Standardization of screening technique for root rot disease (Macrophomina phaseolina) of castor
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Authors
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M SANTHA LAKSHMI PRASAD
ICAR-Indian Institute of Oilseeds Research, Rajendranagar, Hyderabad-500 030, Telangana
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T MANJUNATHA
ICAR-Indian Institute of Oilseeds Research, Rajendranagar, Hyderabad-500 030, Telangana
Keywords:
Castor, Macrophomina phaseolina, Root rot, Screening techniqueAbstract
Root rot caused by Macrophomina phaseolina is a major disease of castor in endemic areas and under water stress conditions. Sick pot method was found better artificial inoculation method for screening of castor genotypes than stem tape inoculation method and sorghum grown inoculum of M. phaseolina @ 35 g/kg soil standardized for sick pot method. In both inoculation methods, parental lines ICS-303, ICS-304, ICS-305, ICS-319, DPC-22, and IPC-46 recorded <10% root rot incidence, while ICS-298, ICS-312, and ICS-321 recorded <20% root rot incidence.
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References
Maiti S and Raoof MA 1984. Aerial infection of Macrophomina phaseolina on castor. Journal of Oilseeds Research, 1:232-233.
Rajani VV and Parakhia AM 2009. Management of root rot disease (Macrophomina phaseolina) of castor (Ricinus communis) with soil amendments and biocontrol agents. Journal of Mycology Plant Pathology, 39 (2): 290–293.
