Abstract

HERNANDEZ CARMONA, Saúl; CARMONA DIAZ, Gustavo; AVILA BELLO, Carlos Héctor  and  MENDOZA MARTINEZ, Germán David. Vegetative propagation of three mangrove species by air-layering in the mangrove from Sontecomapan, Catemaco, Veracruz, Mexico. Polibotánica [online]. 2012, n.33, pp.193-205. ISSN 1405-2768.

Asexual propagation in mangrove species is poorly documented and has consisted of individual experiments for vegetative propagation of some species exists without continuity and further investigation by the unsuccessful results. Among 69 species of mangroves only nine have been propagated through asexual reproduction and the results range goes from a low roots production in individuals bent to a very low percentage to become established in field. This has led some experts believe that these mangrove species are not suitable for vegetatively propagated. The aim of this study was to evaluate the asexual propagation by air layers on species Rhizophora mangle (Rhizophoraceae), Laguncularia racemosa (Combretaceae) and Avicennia germinans (Avicenniaceae) under the assumption that an individual mangrove can be propagated by layering tallest and fastest growing also be developed in less time than propagules. The work was done in the 1342 Ramsar site "Mangroves and Wetlands Sontecomapan Lagoon", Catemaco, Veracruz, Mexico. 120 branches are layered in mangrove species using Indole Butyric Acid (Raizoneplus, with 6% Indole-3-Butyric Acid) to promote root. L. racemosa roots occurred in 96 layers after 195 days. R. mangle roots occurred in 37 layers and A. germinans in 31, both species layered after one year. Significant differences were found between the number of roots produced by species and thickness. Not relationship was found between the number of roots produced by species with height, DBH, tree cover and the length and thickness of branches. Not significant difference was found to correlate the number of roots with length and thickness structural measures of branches in each species. The three species have the ability to produce root even in quantity and sizes, however, we suggest the elbow of L. racemosa to conduct reforestation programs.

Keywords : asexual propagation; air layers; mangrove species; roots production.

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