Studies On Pathogenicity Of Macrophomina Phaseolina On Sorghum Cultivars
Journal Title: International Journal of Engineering and Science Invention - Year 2017, Vol 6, Issue 12
Abstract
The test pathogen M.phaseolina was successfully isolated on Potato Dextrose Agar (PDA) medium. The pathogenicity of M.phaseolina was tested by sand culture method. Sand culture of the test pathogen was used as inoculum. After the inoculation the symptoms produced by test organism was observed both in roots and stems of sorghum cultivars employed at different plant growth stages. The present study reveals that the 100% disease incidence was observed at lodging and soft stalk stages, besides recording the maximum spread of pathogen up to 5nodes. Mean root infection also observed, based on this it has been established that CSV-8R is the susceptible cultivar and RS-29 is resistant cultivar to charcoal rot. The split open plants also revealed the presence of mycelia and conidia of fungus. This implies that M.phaseolina is the most important stalk rot pathogen.
Authors and Affiliations
Srinivas . T, Shankar . T
Keywords
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