Estimación de heredabilidad y correlaciones genéticas en caracteres morfológicos y fisiológicos para una población de Zamia obliqua A.Br. (Zamiaceae: Cycadales)
ABSTRACT: The response to natural selection of quantitative traits in a natural population depends on the magnitude of genetic variability and genetic correlations between traits, and these genetic parameters can differ between trait categories. In this study we characterized the patterns of phenoty...
- Autores:
-
Gómez Lopera, Natalia
López Gallego, Cristina
- Tipo de recurso:
- Article of investigation
- Fecha de publicación:
- 2014
- Institución:
- Universidad de Antioquia
- Repositorio:
- Repositorio UdeA
- Idioma:
- spa
- OAI Identifier:
- oai:bibliotecadigital.udea.edu.co:10495/9709
- Acceso en línea:
- http://hdl.handle.net/10495/9709
- Palabra clave:
- Factores de Riesgo
Risk Factors
Variación Biológica Poblacional
Biological Variation, Population
Variación Biológica Poblacional
Biological Variation, Population
Zamiaceae
Parentesco
Kinship
Similitud fenotípica
http://vocabularies.unesco.org/thesaurus/concept5362
- Rights
- openAccess
- License
- Atribución-NoComercial-CompartirIgual 2.5 Colombia (CC BY-NC-SA 2.5 CO)
| Summary: | ABSTRACT: The response to natural selection of quantitative traits in a natural population depends on the magnitude of genetic variability and genetic correlations between traits, and these genetic parameters can differ between trait categories. In this study we characterized the patterns of phenotypic variance and covariance and estimated heritability and genetic correlation of morphological and physiological traits in a population of Zamia oblique (Zamiaceae: Cycadales). We tested the hypothesis that variance and heritability values are higher for morphological than for physiological traits, and that phenotypic and genetic correlations are larger within than between trait categories. Phenotypic variance values were higher for physiological traits than for morphological characters. Heritability estimates suggested that morphological traits had a higher genetic variance than physiological traits. On the other hand, signi cant estimates of genetic correlations among traits were not obtained. Nevertheless, phenotypic correlations show a higher correlation within morphological traits than within physiological traits or among physiological and morphological traits. These kinds of estimates for genetic parameters can help generate hypotheses about the evolution of phenotypic traits in natural populations, and represent important contributions to the study of evolutionary ecology in non-model species and their populations in natural habitats. |
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