Ginkgo biloba L. mini-cuttings: indole butyric acid, substrates, and biochemical composition of the mother plants

• Published in: Agronomía colombiana Vol. 38; no. 3; pp. 429 - 435
• Main Authors: Maggioni, Renata de Almeida, Porto Latoh, Leandro, Vieira, Leandro Marcolino, Romanini Netto, Emilio, Zuffellato-Ribas, Katia Christina
• Format: Journal Article
• Language: English
• Published: Universidad Nacional de Colombia, Facultad de Agronomía 01-09-2020; Centro Editorial of Facultad de Ciencias Agrarias, Universidad Nacional de Colombia
• Subjects: AGRONOMY; medicinal plant cloning; medicinal plants; plant growth regulators; rooting; vegetative propagation; rooting; plant growth regulators; medicinal plant cloning; plantas medicinales; clonación de plantas medicinales; vegetative propagation; propagación vegetativa; medicinal plants; enraizamiento; reguladores del crecimiento
• ISSN: 0120-9965; 2357-3732
• DOI: 10.15446/agron.colomb.v38n3.86430

The objective of this study was to evaluate the viability of the Ginkgo biloba mini-cutting technique, as well as the influence of substrates and different concentrations of indole butyric acid (IBA) on adventitious rooting in addition to the protein and sugar content in the mini-cutting. Mini-cuttings were 4 ± 1 cm in length, with the bases immersed in solutions of 0, 1000, 2000, and 3000 mg L-1 IBA. They were then planted in polypropylene tubes using two substrates (vermiculite and Tropstrato®) and maintained under greenhouse conditions for 60 d. The experiment was carried out with a 2 × 4 factorial scheme (substrates × IBA). There was no influence of IBA application on the promotion of rhizogenesis in Ginkgo biloba mini-cuttings. The rooting percentages were higher than 55% regardless of the treatment used. The vermiculite substrate showed a higher number of roots (4.94) and lower mortality (11.60) of mini-cuttings than Tropstrato®. We conclude that the mini-cutting technique is feasible for Ginkgo biloba, and the use of IBA is not necessary. We found that the induction ofadventitious rooting depended on the biochemical composition of the mother plants, due to the translocation of non-reducing sugars and leaf proteins for root formation.