Genetic variability in commercial subpopulations of creole colombian breed Romosinuano
Genetic variability is of great importance when analyzing the conservation of genetic resources and also constitutes the basis for the process of genetic selection and improvement. The main objective of this study was to determine the genetic variability of the Colombian breed Romosinuano through molecular techniques. This study used 12 microsatellite markers to determine the genetic diversity and population structure in a total of 119 individuals of the Romosinuano breed and 42 of the Zebu breed, distributed in different geographical areas of the country. The highest average number of alleles (ANA) was in the subpopulation Universidad del Tolima (UT : 7.92) and the lowest value was in the subpopulation Bonanza (BO: 4.08). The polymorphic information content (PIC) for all studied markers was informative, finding ranges between 0.47 (BM 1818) and 0.71 (BM 2113), with an average in population of 0.64. The fixation indices FIS (-0.20), FIT (0.37) and FST (0.14) showed a deficit of heterozygotes. A phylogenetic tree was made using the Nei method, the lowest genetic distance was between subpopulations Guillermo Soto (GS) and Edem (ED), while the highest occurred between subpopulations El Brillante (BR), Universidad del Tolima (UT) and Fabio Torres (FT). There is high genetic variability among the populations, but moderate values of homozygosity within them, so it is necessary to give more importance to the management of this gene flow to reduce inbreeding. These results are an important basis for defining new plans for assisted selection and breeding.
| Main Authors: | , , , |
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| Format: | info:eu-repo/semantics/article biblioteca |
| Language: | spa |
| Published: |
Corporación Colombiana de Investigación Agropecuaria (Agrosavia)
2012
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| Subjects: | Genética y mejoramiento animal - L10, Variación genética, Ganado bovino, Microsatélites, Población animal, Ganadería y especies menores, |
| Online Access: | http://revista.corpoica.org.co/index.php/revista/article/view/246 http://hdl.handle.net/20.500.12324/33902 |
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