ÁCIDO INDOLBUTÍRICO E SACAROSE NO ENRAIZAMENTO DE ESTACAS DE GOIABEIRA CULTIVAR PALUMA

Abstract

With the objective of increasing the percentile of rooted cuttings and the quality of the newly formed root system through the treatment of cuttings with AIB and sucrose, the present study took place. The experiment was conducted in an intermittent mist chamber located in the experimental orchard at UFLA, in Lavras, MG. The herbaceous cuttings of cv. Paluma were collected in the orchard of UFLA in March of 1999. The prepared cuttings with 2 nodes and 1 pair of leaves reduced to half were treated with AIB in immersion for 24 hours at concentrations of 0, 100, 200 and 300 mg.L-1, 2% sucrose being added or not. After the treatment the cuttings were planted in polyethylene sacks with sand as a substrate. The layout used was it entirely casual with 4 repetitions and 15 cuttings per plot. From the evaluations it was concluded that: a) the concentration of 300 mg.L-1 of AIB provided the best result for the percentage of rooted cuttings as well as for the number and average weight of the dry root matter. b) The presence sucrose didn't present a significant effect on the characteristics analyzed. c) The simple permanence of the leaves on the cuttings didn't influence their rooting. d) In those cuttings treated with 300 mg.L-1 of AIB, it was not necessary for the leaves to persist for 60 days.