Morphological and Molecular Characterization of Lasiodiplodia Theobromae Causing Crown Rot of Banana

Main Article Content

P. Renganathan, R. Karan, S. Dhaarani, K. R. Saravanan, R. Premkumar


Crown rot of banana caused by Lasiodiplodia theobromae is a serious post harvest problem leads to severe yield reduction. In survey, Negamam in Coimbatore district showed highest incidence of crown rot (62.0%). Among the varieties surveyed, Rasthali showed higher incidence than Poovan. Among the different methods tested, pin prick method recorded the maximum per cent disease index of about 80.91% by the isolate Lt8. L. theobromae produces grey, grayish black and medium grey mycelium. Lt8 produces maximum mycelium growth whereas Lt7 produces least mycelia growth. Excellent pycnidial production was observed in Lt8 whereas poor pycnidial production was observed at Lt7

Article Details