Biometria, morfologia, armazenamento de sementes e crescimento inicial de Acnistus arborescens L.

Detalhes bibliográficos
Ano de defesa: 2012
Autor(a) principal: Brito, Selma Freire de
Orientador(a): Não Informado pela instituição
Banca de defesa: Não Informado pela instituição
Tipo de documento: Dissertação
Tipo de acesso: Acesso aberto
Idioma: por
Instituição de defesa: Não Informado pela instituição
Programa de Pós-Graduação: Não Informado pela instituição
Departamento: Não Informado pela instituição
País: Não Informado pela instituição
Palavras-chave em Português:
Link de acesso: http://www.repositorio.ufc.br/handle/riufc/8621
Resumo: Marianeira is a medicinal specie whose active principle has anti-tumor activity. This research has as objective realize the biometric and morphologic characterization of fruits, seeds and seedlings, germination, storage and initial growth in different shading levels. The biometry was evaluated in a sample of 50 fruits and 100 seeds. Firstly, the germination morphology was done in BOD and the development post-seminal was evaluated in greenhouse. In the study about the germination, it was evaluated the combination of temperature (20, 25, 30 and 20-30 °C) and the addition of KNO3 in the substrate (without and with 0,2% of KNO3), in a completely randomized design with four replicates, and was analyzed the percentage, speed index and mean time of germination. The factors involved in the storage experiment were environment (environment, refrigerator and cold chamber), package (glass, plastic bag and aluminized paper) and period of storage (3, 6 and 9 months) disposed in split-plot according to a completely randomized design. The initial growth was evaluated under the combination of four shading conditions (0, 50, 70 and 90% of shading) and five plants age (30, 51, 72, 93 and 114 days after the transplant), disposed in a split-plot scheme according to a randomized block design with four replicates, and were analyzed the height, diameter, root length, leaf number, dry weight of leaves, stem, root and total, besides of the chlorophyll relative index, leaf area, leaf area ratio, specific leaf area and specific leaf weight. The fruit is indehiscent, fleshy, globular and polyspermic, it weighs 0,53 g and has 46 seeds. The seeds have ellipsoidal shape and the embryo is curve and the endosperm is white. The seeds present the following measures: 1.59 mm of length, 1.33 mm of width and 0.36 mm of thickness. The germination is phanero-epigeal with leaf cotyledons. The temperatures recommended to evaluate the germination were 20 °C and 20-30 °C with KNO3 (0,2%), presenting 75 and 71% of germination. Cold room and refrigerator were the most suitable environments for the preservation of seeds for nine months when stored in glass and plastic. Under natural conditions the glass container is ideal for storage for 3 months. The shade favored early growth marianeira.