Produção de mudas de Schinus terebinthifolius RADDI provenientes de sementes coletadas em diferentes locais e submetidas a níveis de luminosidade
| Ano de defesa: | 2014 |
|---|---|
| Autor(a) principal: |
Barbado, Norma
 |
| Orientador(a): |
Klosowski, Élcio Silvério
|
| Banca de defesa: |
Moreira, Gláucia Cristina
,
Oliveira, Paulo Sérgio Rabello de
,
Tsutsumi, Cláudio Yuji
,
Klein, Jeferson
|
| Tipo de documento: | Tese |
| Tipo de acesso: | Acesso aberto |
| Idioma: | por |
| Instituição de defesa: |
Universidade Estadual do Oeste do Paraná
Marechal Cândido Rondon |
| Programa de Pós-Graduação: |
Programa de Pós-Graduação em Agronomia
|
| Departamento: |
Centro de Ciências Agrárias
|
| País: |
BR
|
| Palavras-chave em Português: | |
| Palavras-chave em Inglês: | |
| Área do conhecimento CNPq: | |
| Link de acesso: | http://tede.unioeste.br:8080/tede/handle/tede/1466 |
Resumo: | The collection site of seeds and the environment where seedlings develop can be limiting factors for the development of forest plants. Therefore, this study aimed to evaluate the germination and seedling growth of the pink pepper tree (Schinus terebinthifolius RADDI), grown from seeds from four locations with different altitudes (São Francisco do Sul - SC, Foz do Iguaçu - PR, Maringá PR and Guarapuava - PR) and developed under different light conditions (50, 60, 70 and 100%). The seeds were collected from three arrays of each selected place and sent to Refúgio Biológico Bela Vista de Itaipu, where a sample was taken for analysis of vigor and germination according to the methodology of the Rules for Seed Analysis. The experimental design used in the germination test was randomized with twelve replicates of 50 seeds per treatment. Analyses related to the development of the seedlings occurred from collections in 30, 60, 90 and 120 days after sowing, assessing growth rates on the plant height, the size of the root, diameter of the collect, the number of leaves, fresh and dry weight of leaves, fresh and dry weight of stem + petiole, fresh and dry weight of root, fresh weight and total dry mass. The experiment was arranged in triple factorial scheme with four levels for each factor (43). The factors evaluated were: local seed collection, luminosity and time, with nine replications, discarding the two highest and the two lowest values. Data were analyzed by multivariate analysis of variance and for the meaningful responses to the variables it was used analysis of variance univariate and Tukey test. To identify the best treatment for the production of seedlings of Pink Pepper, the set of response variables (b1) from the treatments applied to principal component analysis (PCA) on the correlation matrix (Pearson) of variables and the criterion for retention of principal components (PCs) used was "broken-stick", also used on the randomizing test. The seeds that showed better percentage of normal seedlings, better germination in the first count (7 DAS), higher index of germination speed, best length of roots and shoots of seedlings at 21 DAS were those from São Francisco do Sul - SC. The seeds that showed the lowest germination rate and a lower percentage of the first count germination (7 DAS), were from Maringá - PR. The best seedlings of the Pink Pepper were obtained from seeds collected in Maringá - PR at 70% brightness, with lower variability. The seedlings that had the lowest rates of development were produced with the seeds of São Francisco do Sul - SC and Foz do Iguaçu - PR at 50% brightness |