Shanta, P.Hariharasubramanian, V.Gopinathan Pillai, N.2014-09-112014-09-112007Journal of Plantation Crops, 3(2), 77-80http://hdl.handle.net/123456789/5610Experiments to check the presence of tobacco mosaic virus have shown that very low amounts of the coconut strain of TMV could be detected when added to coconut root or leaf extract, showing that if the virus is present, infectivity tests should be adequate for testing the presence of the virus in diseased plants. It. was also possible to distinguish particles of TMV in negatively stained preparations of coconut root and leaf containing TMV. All infectivity tests and electron microscope observations carried out with diseased coconut material yielded negative results for presence of this strain of the virus.enArticle