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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Avaliação do encapsulamento de sementes recalcitrantes de Campomanesia adamantium (Cambess) O. Berg / Evaluation of encapsulation of recalcitrant seeds of Campomanesia adamantium (Cambess) O.Berg

Braga, Valéria Prado 17 April 2017 (has links)
Submitted by Luciana Ferreira (lucgeral@gmail.com) on 2017-06-06T14:00:05Z No. of bitstreams: 2 Dissertação - Valéria Prado Braga - 2017.pdf: 1577860 bytes, checksum: 0ccd3b3dbeb5bdd1c928bb26990414c9 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Approved for entry into archive by Luciana Ferreira (lucgeral@gmail.com) on 2017-06-06T14:00:36Z (GMT) No. of bitstreams: 2 Dissertação - Valéria Prado Braga - 2017.pdf: 1577860 bytes, checksum: 0ccd3b3dbeb5bdd1c928bb26990414c9 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Made available in DSpace on 2017-06-06T14:00:36Z (GMT). No. of bitstreams: 2 Dissertação - Valéria Prado Braga - 2017.pdf: 1577860 bytes, checksum: 0ccd3b3dbeb5bdd1c928bb26990414c9 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Previous issue date: 2017-04-17 / Fundação de Amparo à Pesquisa do Estado de Goiás - FAPEG / The gabirobeira (Campomanesia adamantium) is a fruit species of the Cerrado, its fruit presents commercial potential in the in natura consumption and in the food industry. However, gabiroba seeds have recalcitrant behavior. Species with this type of behavior can be conserved by means of tissue culture techniques of plants, such as, for example, synthetic seeds. The objective of this work was to establish the protocol for the production of synthetic seeds of Campomanesia adamantium from true seeds. For the encapsulation of the seeds, 4 concentrations of sodium alginate (0.1.5, 2 and 3%) and 3 complexation times (15, 20 and 30 minutes) were tested, with no significant interaction between the studied factors, however. As the alginate concentration increases the germination time increases and the germination capacity decreases. Synthetic seeds with the same concentrations of alginate were produced in 20 minutes of complexation and stored at 4 ° C for 1, 7, 15, 30 and 60 days in order to evaluate the storage capacity of the same. The concentrations of 2% sodium alginate were able to preserve the integrity of the membranes of the encapsulated seeds regardless of storage time, however this was not enough to promote germination. / A gabirobeira (Campomanesia adamantium) é uma espécie frutífera do Cerrado, seu fruto apresenta potencial comercial no consumo in natura e na indústria alimentícia. No entanto, sementes de gabiroba possuem comportamento recalcitrante. Espécies com esse tipo de comportamento podem ser conservadas por meio de técnicas de cultura de tecidos de plantas, como por exemplo, as sementes sintéticas. Diante disso, o objetivou-se com este trabalho o estabelecimento do protocolo para produção de sementes sintéticas de Campomanesia adamantium a partir de sementes verdadeiras. Para o encapsulamento das sementes foram testados 4 concentrações de alginato de sódio (0,1,5, 2 e 3%) e 3 tempos de complexação (15, 20 e 30 minutos), não havendo interação significativa entre os fatores estudados, no entanto a medida que se aumentou a concentração de alginato aumentou o tempo de germinação e a capacidade germinativa diminuiu. Sementes sintéticas com as mesmas concentrações de alginato foram produzidas em 20 minutos de complexação e armazenadas a 4ºC por 1, 7, 15, 30 e 60 dias a fim de avaliar a capacidade de armazenamentos das mesmas. As concentrações de 2% de alginato de sódio conseguiu preservar a integridade das membranas das sementes encapsuladas independentemente do tempo de armazenamento, no entanto isso não foi o suficiente para a promoção da germinação.

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