Heritability of Phenolics in Quercus laevis Inferred Using Molecular Markers
| Autor: | Mark D. Hunter, Rebecca D. Klaper, Timothy A. Mousseau, Kermit Ritland |
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| Rok vydání: | 2001 |
| Předmět: |
education.field_of_study
Polymorphism Genetic biology Genetic heterogeneity Range (biology) Population Heritability biology.organism_classification Genetic Heterogeneity Quercus Phenotype Phenols Natural population growth Evolutionary biology Quercus laevis Botany Genetic variation Genetics Microsatellite education Molecular Biology Phylogeny Genetics (clinical) Microsatellite Repeats Biotechnology |
| Zdroj: | Journal of Heredity. 92:421-426 |
| Popis: | Studies of quantitative inheritance of phenotypes do not generally encompass the range of environmental conditions to which a population may be exposed in a natural setting and are rarely conducted on long-lived species due to the time required for traditional crossing experiments. We used a marker-based method to estimate relatedness with microsatellite markers in a natural population of a long-lived oak, then used this inferred relatedness to examine quantitative genetic variation in the concentration of foliar phenolics. Estimating heritability using this method requires both significant relatedness and variance in relatedness over distance. However, this population did not show significant variance of relatedness, so only the presence of heritability, and its ranking among traits and environments, could be estimated. Seven foliar phenolics showed a significant relationship between phenotypic similarity and relatedness. The significance of this relationship varied among individual phenolic compounds, as well as by season. Genetic factors appeared to have a more measurable influence on the production of secondary compounds early in the season. After leaf expansion, covariance of relatedness and phenotypic variance appear to become less significant. Therefore heritability may vary seasonally for these traits. |
| Databáze: | OpenAIRE |
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