Mini-cutting rooting and plantlet growth in Erythrina crista-galli L.1

Studies on native tree species have shown that the type of mini-cutting affects adventitious rooting and growth in Cedrela fissilis (Xavier et al., 2003), while the mini-cuttings origin, leaf area and size, and concentration of indolebutyric acid affect rooting competence in Handroanthus heptaphyllus (Rodrigues et al., 2017). [...]improvements in adventitious rooting competence at genotype level depends upon fine-tuning of some of these factors. Considering that only herbaceous mini-cuttings of swamp cork plants up to one-year-old have high rooting potential (Gratieri-Sossella et al., 2008), and no reference was found discussing factors affecting mini-cutting rooting, this research was carried out to evaluate the application need of different concentrations of indolebutyric acid (IBA) for adventitious rooting, the different substrate composition for mini-cutting rooting and plantlet growth, and the rooting curve of two swamp cork clones. The accumulated rooting refers to the total number from the beginning until the evaluated day. [...]the total number was gotten at 42 days of cultivation in the humidity chamber for the percentage of rooting and the number and length roots. The different levels of any factor that were found to lead to significant differences in the tested traits by the ANOVA F-test (p < 0.05) were further compared using Tukey's test, with a 5% type-I error probability (p < 0.05).