| Revue: | Ciencia florestal |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000361743 |
| ISSN: | 0103-9954 |
| Autores: | Nieto Rodríguez, Jose Enrique1 Hernández Delgado, Sanjuana2 Mayek Pérez, Netzahualcoyotl2 |
| Instituciones: | 1Instituto Nacional de Salud Pública, Centro de Investigación en Ciencia Aplicada y Tecnología Avanzada, México, Distrito Federal. México 2Instituto Politécnico Nacional, Centro de Biotecnología Genómica, Reynosa, Tamaulipas. México |
| Año: | 2013 |
| Periodo: | Jun |
| Volumen: | 23 |
| Número: | 2 |
| Paginación: | 415-426 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental, analítico |
| Resumen en inglés | In this paper, we assessed six native populations (55 trees) of Triplaris guayaquilensis Wedd (Fernan Sanchez), one of the major forest species from Ecuador, using morphological and AFLP (Amplified Fragment Length Polymorphisms) data. The populations were collected through two macro-sites (Central coastals: Quevedo, Ventanas, la Guayas; Andean surroundings: la Maná, Patricia Pilar, Pichincha). The populations showed the following traits: straight shaft (66 %); round, irregular top shape (50 %); and branch insertion angle 0° - 30° (86 %). Four qualitative (straight shape, type of leaf edge, leaf width and leaf pubescence) and four quantitative (commercial tree height, basal area, commercial volume and total volume) traits were the most explicative traits present after Principal Component Analysis (PCA). PCA separated populations into two groups: one group included populations from Central Coastals which showed morphological traits highly and positively correlated with wood production, and the other group included populations with lower tree growth from the Andean surroundings. Populations from Central Coastals showed the highest values of genetic diversity indexes, AFLP markers separated populations based on the macro site of origin. For K = 2 Bayesian analysis separated FS populations into two groups; two populations from Central Coastals region and the other four the Andean surroundings region (3) and 1 from Central Coastals (La Guayas). For greater K values, the genetic fragmentation of populations by origins was evident since for K = 5 four groups were performed: one including populations from Quevedo and Ventanas and other from La Guayas (Coastals), the third group included trees from La Mana and Pichincha and the fourth, from Patricia Pilar (Andean surroundings). Results suggested the constant and effective genetic recombination or the genetic flow among and within Fernan Sanchez populations with a clear tendency towards genetic different |
| Disciplinas: | Agrociencias, Biología |
| Palabras clave: | Silvicultura, Genética, Polygonaceae, Triplaris guayaquilensis, Ecuador, Endemismo, Morfología vegetal, Variabilidad genética, Marcadores moleculares, Marcadores AFLP |
| Keyword: | Agricultural sciences, Biology, Silviculture, Genetics, Polygonaceae, Triplaris guayaquilensis, Ecuador, Endemism, Plant morphology, Genetic variability, Molecular markers, AFLP markers |
| Texte intégral: | Texto completo (Ver PDF) |
