Abstract
Approaches to determining the resistance of palm species and varieties to lethal yellowing (LY) disease are discussed. The field test approach is illustrated with an example: the results of a field test in Florida to compare the susceptibility to Lethal Yellowing (LY) of two species of Veitchia palms were that 91.9 percent of V. merrillii (Beccari) H. E. Moore and 19.3 percent of V. montgomeryana H. E. Moore contracted LY. Thus, V. merrillii is apparently highly susceptible and V. montgomeryana moderately susceptible to LY.6 referencias.Approaches to determining the resistance of palm species and varieties to lethal yellowing (LY) disease are discussed. The field test approach is illustrated with an example: the results of a field test in Florida to compare the susceptibility to Lethal Yellowing (LY) of two species of Veitchia palms were that 91.9 percent of V. merrillii (Beccari) H. E. Moore and 19.3 percent of V. montgomeryana H. E. Moore contracted LY. Thus, V. merrillii is apparently highly susceptible and V. montgomeryana moderately susceptible to LY.