Revista Brasileira de Fruticultura
Print version ISSN 0100-2945
CAVALCANTE, Tadeu Robson Melo; NAVES, Ronaldo Veloso; SERAPHIN, José Carlos and CARVALHO, Glaucilene Duarte. Different environments and substrata in araticum seedlings formation. Rev. Bras. Frutic. [online]. 2008, vol.30, n.1, pp. 235-240. ISSN 0100-2945. http://dx.doi.org/10.1590/S0100-29452008000100043.
Low survival rate of araticum seedlings and scarcity of information in scientific literature on proper substrata to araticum (Annona crassiflora Mart.) seedlings production have all been motivating factors to this study. The aim of this paper was to assess the effect of different environments and substrata in the formation of seedlings germinated from araticum seeds. The seeds were treated with gibberellic acid (GA3) (250mg.L -1), being one seed per polypropylene tube measuring 280cm3 at 2 cm deep. Substrata used were medium texture sand (S1), commercial substrate composed by processed and enriched skins, expanded vermiculite, and processed and enriched turf (Plantmax HA) (S2), commercial substrate from granulated coconut fiber (Golden Mix) (S3), medium texture sand + commercial substrate Plantmax HA (1:1; v/v) (S4) and medium texture sand + commercial substrate Golden Mix (1:1; v/v) (S5).The experimental design was in randomized complete blocks, with 5 treatments and 6 repetitions. The experiments were installed in two environments: in the greenhouse and in full sunlight. Data was collected throughout 215 days following sowing. The mortality rate was statistically significant; in S1 the average rate was 18% lower compared to the other substrata. However, the estimated foliar area was smaller on average 0.78cm2. In the greenhouse, emergency in S1 did not differ from the other treatments; notwithstanding, the plant height was on average 0.84 cm shorter when compared to other treatments. Regarding the survival rate, S1 was shown as the best treatment.
Keywords : Annona crassiflora Mart.; Annonaceae; native fruit plant; cerrado; propagation.