Risogenesis induction of black currant (Ribes nigrum L.).
ABSTRACT This study elaborates the risogenesis induction of black currant, and possibility of its mass production by means of vegetative reproduction, with usage of ripe cuttings. Furthermore, we presented the influence of the affected cuttings and different hormonal treatments on the risogenesis induction, on a number of cuttings and on the quality of the root system (length and thickness of the lateral roots and the number of second line roots). The cuttings were treated with three types of plant hormones (IAA, IBA, and NAA) in the mould form, in addition to the control group, without hormonal treatment. The cuttings were raised in containers, in a mixture of the substrate of sphagnum and sand, in 3:1 ratio. From the denominated results, the best hormonal treatment for risogenesis induction of black currant was with IAA for the affected cuttings, which coincides with the results reported by other researches.