[Objective] To study the drought resistance of excellent cultivars of Ananas comosus (L.).[Method] A total of five kinds of pineapple cultivars including 'Comte de Paris','Comte de Paris mutant ','Tainong 17','MD-2' and 'Smooth Cayenee' were studied under drought stress condition.The changes of total chlorophyll contents,chlorophyll a contents and chlorophyll b contents were determined in the different stages of drought stress.[Result]The results indicated that total chlorophyll contents in all seedlings we...