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Fave. Sección ciencias agrarias
Print version ISSN 1666-7719On-line version ISSN 2346-9129
Abstract
ARAUJO VIERA DE SOUZA, J. C et al. Influence of the propagules lignification degree of the garden and minigarden clonal on the cuttings and mini cuttings rooting of Prosopis alba Griseb. FAVE. Secc. Cienc. agrar. [online]. 2021, vol.20, n.1, pp.287-304. ISSN 1666-7719.
Prosopis alba has high potential as forest material and important forage features for arid and semi-arid areas. Prosopis alba is commercially propagated by seeds, because of its rooting difficulties. Its cloning would allow to cultivate highly productive silvicultural materials in less time. The aim of this work was to analyze the lignification degree of P. alba cuttings and mini-cuttings and its relation with the rooting capability. The sprouts obtained from the garden and clonal mini-garden were rooted with different concentrations of IBA. Serial transversal sections of the sprouts were carried out before rooting induction and 40 days after this process to observe the lignification of these material and to relate them with rooted cuttings and mini-cuttings. Results show that mini-cuttings with greater juvenility and etiolation degree presented lower lignification degree and reached higher rooting percentages (99.6%) with respect to cuttings (7.6%). Mini-cutting and etiolation techniques are promising for the vegetative propagation of P. alba and other native species with difficult rooting.
Keywords : Vegetative propagation; Rhizogenesis; Etiolation; Mesquite; Native species.