Abstract
The objective of this work was to evaluate the feasibility of vegetative propagation through cutting technique of seven tree species with strong occurrence in the riparian forest of the Lower São Francisco River in Sergipe State, under different concentrations of indolbutiric acid at 0, 2500, and 5000 mg.L-1, for potentialization of its use in soil bioengineering technique. It was used a complete random block design with three replicates, and a total of twenty-one treatments. The evaluation period was 120 days for each species, and the data collection was made in intervals of fifteen days, in a total of eight evaluations for each species. The evaluated parameters were: Survival Rate, callus formation, and Root Dry matter Weight. Among the studied species, Schinus terebinthifolius Raddi presented the best results related to cutting technique mainly under the indolbutiric acid concentration of 2500 mg.L-1.
Highlights
Due to its length and complexity, the São Francisco River basin is divided into four sections: Upper, Middle, Sub-Middle, and Lower São Francisco
The number of roots formed for cutting of S. terebinthifolius was significantly higher at a dose of 2500 mg.L-1 indolbutiric acid (IBA) (p < 0.05) to that observed in the other species
M. caesalpiniaefolia that showed less dependency on the use of this phytohormone when compared to other species, as observed by Inoue and Putton (2007), who found that the behavior of the Survival Rate of cuttings of a species varies with the concentration of a plant growth regulator
Summary
Due to its length and complexity, the São Francisco River basin is divided into four sections: Upper, Middle, Sub-Middle, and Lower São Francisco. These sections are autonomous allowing a decentralized and Basinwide management model (ANA/GEF/PNUMA/OEA, 2003). As an alternative to the empirical practices of the riverines and to the expensive bordering and rockfill biotechniques, the use of abundant raw material has been tested through experimental trials in the lower São Francisco through bioengineering techniques, providing a way of mitigating the problem that can be economically viable and has shown technical efficiency (HOLANDA et al, 2008)
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