ROOTING OF ARATICUM-DE-PORCO STEM CUTTINGS WITH PLANT GROWTH REGULATORS
DOI:
https://doi.org/10.5380/rsa.v4i1.1064Keywords:
Rollinia rugulosa, Annonaceae, auxinas, estaquia, auxins, cutting.Abstract
Rollinia rugulosa Schl. (Annonaceae) is a native tree species suitable for ecosystem rehabilitation. This species produces edible fruits, that attract the local fauna. However, it presents a low rate of seed germination. To investigate the asexual reproduction, stem cuttings from native plants were collected in Colombo, State of Paraná, in the four seasons, beggining in march/2000. The following treatments with indolebutyric acid (IBA) and naphtaleneacetic acid (NAA) were used: 2000 mg.L-1 IBA, 4000 mg.L-1 IBA, 6000 mg.L-1 IBA, 2000 mg.L-1 NAA, 4000 mg.L-1 NAA, 6000 mg.L-1 NAA, 2000 mg.L-1 IBA + 2000 mg.L-1 NAA, and 5000 mg.L-1 NAA (Raizon 05â) in powder and the control (water). Cuttings collected during the fall and winter did not develop roots. Treatments using 6000 mg.L- 1 IBA and 2000 mg.L-1 IBA + 2000 mg.L-1 NAA showed the best results, during the spring, with 4% of root formation, for both treatments. Rollinia rugulosa showed a very low rate of rooting during the seasons for the tested conditions.
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