Use of paclobutrazol and ethylene in the potted production of ornamental pineapple

Abstract The expansion of residential areas has increased the demand for exotic and increasingly compact landscape plants. In this context, work aimed to evaluate effects paclobutrazol (PBZ) timing ethylene application on growth reduction flowering anticipation in ornamental pineapples grown pots. randomized block design was used with factorial arrangement (2 x 5) 4 replications plants per plot. primary treatments are presence absence PBZ. secondary were five times floral induction ethylene: 90; 120; 150; 180; 210 days after transplanting (DAT) seedlings into It evaluated variables: height ratio between heights pot plant; rosette diameter; leaves length ‘D’ index. At 255 DAT, although did not respond ethylene, only those treated PBZ more had different characteristics such as smaller size a below 1/3 vase relation plant that favor its commercialization, pot.