The experimentwas carried out in a greenhouse from September 2001 to January 2002 to selectseveral prickly-pear varieties resistant to cochineal carmine. Twenty pricky-pearvarieties were evaluated as a completely randomized experimental design withfour replicates. The plants were artificially infested. The infestation levelwas evaluated by a 0 - 5 scale. The most resistants clone are "Miúda"and "Orelha de Elefante".
