A biotecnologia na propagação e conservação do umbuzeiro (Spondias tuberosa Arr. Cam.) e percepção sobre sua importância por agricultores da comunidade Malhada Vermelha, Campo Redondo (RN-Brasil)
The umbu tree (Spondias tuberosa Arruda) is a fruit native to the northeast of Brazil with great economic, social and ecological importance for the northeastern semi-arid region. Despite its role, the umbu tree has suffered negative pressure thanks to cluttered extractivism and to negative select...
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| Formato: | Dissertação |
| Idioma: | por |
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Universidade Federal do Rio Grande do Norte
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| Endereço do item: | https://repositorio.ufrn.br/jspui/handle/123456789/19853 |
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| Resumo: | The umbu tree (Spondias tuberosa Arruda) is a fruit native to the northeast of Brazil with
great economic, social and ecological importance for the northeastern semi-arid region.
Despite its role, the umbu tree has suffered negative pressure thanks to cluttered extractivism
and to negative selection of its fruits, which as the deforestation and the dormancy of seeds
contribute to the decrease of its production year after year, making necessary studies that
contribute to the improvement of this specie and its conservation. Given the risks to the
conservation of the specie and its usefulness to the population, the association between plant
biotechnology, for being a tool that can be used to increase its production. and the perception
of gathering communities, by valuing the point of view and the knowledge of the population,
can facilitate its conservation. This work aimed to develop methods of propagation for umbu
tree as well as contribute to its conservation by using biotechnology, with specific objectives
to contribute to the conservation of this species; determine concentrations of BAP and ANA
in the formation of buds; testing the efficiency of different substrates and concentrations of
gibberellic acid on germination in vitro and ex vitro, as well as capture the perception of
families in communities that engage in the gathering of umbu. To study the germination, the
seeds were inoculated in different substrates (vermiculite, vermiculite + clay, clay, clay +
manure and manure + vermiculite) and in different concentrations of gibberellic acid (0 mg,
250 g and 500 mg). For the formation of buds BAP to 0.1 mg-1 was associated with different
concentrations of ANA (0.2; 0.4; 0.8mg.L-1). The study of perception was conducted by
applying semi-structured questionnaire with Malhada Vermelha community. The experiments
resulted in vermiculite and concentration of 500 mg gibberellic acid as the best for
germination. The association of 0.1 mg.L-1 of BAP to 0.2 mg.L-1 of ANA provided better
formation of buds. As to the application of questionnaires, they revealed that the population
understands the decreased amount of umbu plants and umbu fruit in the region, as well as
shows concern for its conservation. |
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