Rozmnazanie in vitro roz i innych gatunkow roslin uzytkowych. II. Ukorzenianie mikrosadzonek

Adventitious rooting of cuttings is a critical and very important process in horticultural mass production either in traditional vegetative multiplication or with propagation in vitro. Several factors affecting rhizogenesis of Rosa sp. shoots and other species have been reported in this review. External factors, which are relatively easy to control (temperature, light, medium composition) and internal factors (endogenous level of growth regulators, phenolic compounds) resulting from ontogenic stage and genotype are presented. The comparison of the different rooting procedures in vitro and ex vitro, and preparation of the microcuttings to the rooting through improving their quality and rooting ability are also discussed.