TITLE:
Effectiveness of Various Stimulators on the Rhizogenesis of Vinca L. Species Cuttings
AUTHORS:
Shahnoza T. Pardayeva, Mavluda M. Amanova
KEYWORDS:
Vinca major, Vinca minor, Rhizogenesis, Stem Cuttings, Rooting Stimulators, Gumi-Mix, Kornevin, Rootex Gold
JOURNAL NAME:
American Journal of Plant Sciences,
Vol.17 No.11,
November
9,
2026
ABSTRACT: Rooting of stem cuttings is the main practical route for propagating Vinca L. species, but root formation is often slow. This study compared three commercial rooting stimulators (Gumi-Mix, Kornevin and Rootex Gold) with a distilled-water control on cuttings of Vinca major L. and Vinca minor L. in the Samarkand region of Uzbekistan. Cuttings were soaked for 3, 6 or 12 h, planted in sand and monitored for 60 days, and the number of rooted cuttings, the number of roots per cutting and root length were recorded; each species-solution-soaking-duration group comprised 50 cuttings. In V. major, 6 h soaking in Gumi-Mix gave the highest rooting (49 of 50 cuttings, 98%) compared with 42 of 50 (84%) in the best control group, with 7 vs 2 roots per cutting and root lengths of 4.9 vs 1.5 cm. In V. minor, rooting percentages were similar for Gumi-Mix and Kornevin (pooled 89.3% and 92.7%), whereas Gumi-Mix was associated with earlier root initiation (7 - 9 vs 9 - 12 days in the control), more roots and longer roots; Rootex Gold gave no increase in rooting over the control. The comparisons are descriptive, and the conclusions apply only to the tested conditions.