Romney, D.H.2014-05-122014-05-121983-04Indian Coconut J., April 1983, p. 3-9http://hdl.handle.net/123456789/1130oconut lethal yellowing occurs jn W. Caribbean islands, Florida and Yucatan. Similar diseases are found in W. and E. Africa. Some 60% of coconut palms in the world are susceptible. The symptoms are described, including presence of MLO in the phloem. Chemotherapy against MLO is effective. Myndus crudu* is considered to be the vector in1 Florida. The incubation period ranges from 3-6 months in young palms to 7-15 months in mature palms. Artificial transmission has not yet been achieved. Resistant coconut cultivars and hybrids, notably 'Malayan Dwarf and Maypan, respectively, developed in Jamaica have been planted in large numbers. Selection and breeding of resistant strains continues so as to broaden the genetic base of resistance as a defense against lethal yellowing mutants. Resistance testing is now being done in Africa.enArticle