ArticleScientific reports2026
Physiological and biochemical behavior of mini-cuttings of Ocotea odorifera (Vell.) Rohwer in seedling production.
Article in Scientific reports, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Ocotea odorifera (Vell.) Rohwer (canela-sassafrás) is a forest species rich in essential oils used in the perfumery industry. The natural regeneration of the species is limited due to low seed germination, reinforcing the need for efficient vegetative propagation methods. This study aimed to evaluate the effect of indole-3-butyric acid (IBA) on the adventitious rooting of minicuttings, as well as on protein and sugar contents, analysed at time zero and after 90 days of rooting, relating these compounds to final rooting performance. Minicuttings were collected during the four seasons of 2024 from canela-sassafrás ministumps maintained in a minigarden. Minicuttings measuring 5 cm in length were treated for 10 s in IBA solutions at concentrations of 0, 1500, 3000, 4500, and 6000 mg L⁻¹. Biochemical analyses of sugars and proteins were performed on the day of experiment installation (time zero) and after 90 days, when rooting was assessed. The highest number of roots (9.95) and the greatest mean root length (15.7 cm) were observed in spring at the concentration of 6000 mg L⁻¹. In this season, the highest rooting percentage (47%) and leaf retention (91%) were also observed, while summer presented the highest mortality (19%). Among IBA concentrations, 3000 mg L⁻¹ promoted the highest rooting percentage (45%), with no significant differences for mortality and leaf retention. Biochemical analyses indicated greater protein accumulation and higher sugar consumption during spring over 90 days, coinciding with superior rooting performance. Spring collection of minicuttings and the application of 3000 mg L⁻¹ IBA are recommended.
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