Seleção de progênies de meios-irmãos e propagação in vitro de Schizolobium parahyba var. amazonicum

• Ano de defesa: 2023
• Autor(a) principal: Mendes, Marielly Figueiredo
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Mato Grosso; Brasil; Faculdade de Engenharia Florestal (FENF); UFMT CUC - Cuiabá; Programa de Pós-Graduação em Ciências Florestais e Ambientais
• Palavras-chave em Português: REML/BLUP; Pomar de sementes; Micropropagação; CNPQ::CIENCIAS AGRARIAS::RECURSOS FLORESTAIS E ENGENHARIA FLORESTAL; Seed orchard; Micropropagation
• Link de acesso: http://ri.ufmt.br/handle/1/5743

Schizolobium parahyba var. amazonicum (Huber ex. Ducke) Barneby, popularly known as paricá, is a naturally occurring species in the Amazon region. It is a raw material of great importance, as its wood is used in the lamination industry because it has a straight trunk and its smooth surface, which is a characteristic of high added value, in addition to being used for recovery, as it has rapid growth. The paricá has great economic and ecological value, however there are few works involving clonal forestry for the species, requiring studies and creation of improved genetic material. In view of this, the present study aimed to select the best progenies in a plantation installed in the north of the State of Mato Grosso and to establish micropropagation methods in order to obtain information for clonal forestry. In the first chapter, an experimental planting was installed using a randomized block design (DBC) with 4 replications in a row of five plants per plot, with DAP, HT and VOL being evaluated. In this analysis, the REML/BLUP program was used to predict the genetic parameters and select the best genotypes. The results found through the genetic parameters and correlation, it was possible to guide selection strategies for the DAP variable, which through the highest genetic values, the progenies of numbers 85, 48 and 51 were the ones that presented the highest performance for cloning. For the second chapter, a completely randomized design (DIC) was installed in which different doses of cytokinin 6-benzylaminopurine (BAP) were added in 0.0; 0.5; 2.0; 4.0; 5.0 mgL for the multiplication phase and different doses of AIB auxin in 0.0; 5.0; 10.0; 20.0; 40.0 mgL for the rooting phase. Through the analysis of the software R, the results found made it possible to identify the extent to which cytokinin BAP was added, the proliferation of shoots increased and the length of the explant decreased and and for rooting it was not possible to find adventitious roots with the tested doses.