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| Povh,Jayme Aparecido; Ribeiro,Ricardo Pereira; Sirol,Rodolfo Nadez; Streit Jr.,Danilo Pedro; Moreira,Heden Luiz Marques; Siewerdt,Frank; Lopera-Barrero,Nelson Mauricio; Mangolin,Claudete Aparecida; Vargas,Lauro. |
| The objective of this study was to evaluate the genetic diversity and the parental contribution of Piaractus mesopotamicus in the production of offspring in the semi-natural system of reproduction. Twenty parental fishes (eleven males and nine females) and the total of 100 larvae were evaluated by microsatellite marker. The parents and offspring had thirty-one alleles and heterozygosity of 0.550 and 0.563, respectively. The females were fertilised by two up to six males while the males fertilised three up to five females. The contribution of the females and males to the offspring were 66.6 and 58%, respectively. Such results indicated no loss in the genetic variability in the offspring, and the parents had multiple paternity and reasonable contribution to... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Genetic variability; Stock enhancement programme; Reproductive management. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132010000200018 |
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| Gomes,Patrícia Cristina; Ribeiro,Ricardo Pereira; Sirol,Rodolfo Nardez; Lopera-Barrero,Nelson Maurício; Moreira,Heden Luiz Marques; Povh,Jayme Aparecido; Mangolin,Claudete Aparecida; Vargas,Lauro; Jacometo,Carolina Bespalhok; Streit Júnior,Danilo Pedro. |
| O objetivo deste trabalho foi avaliar a diversidade genética de um estoque de Salminus brasiliensis utilizado em programas de repovoamento do rio Paranapanema, por meio do marcador RAPD. Dez reprodutores (cinco machos e cinco fêmeas) e sua progênie (40 larvas e 40 alevinos) foram analisados. Os oito iniciadores analisados produziram 96 fragmentos, dos quais 81,2% foram polimórficos. Houve diferença significativa na frequência de 32 dos 96 fragmentos, com a presença de um fragmento exclusivo nos alevinos. O índice de Shannon, a percentagem de fragmentos polimórficos e a distância e a identidade genética mostraram menor divergência genética entre os reprodutores e as larvas, além de diminuição da variabilidade nos alevinos. A divergência genética foi menor... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Salminus brasiliensis; Marcador molecular; Peixe; RAPD; Programas de repovoamento. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2011000200008 |
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| Lopes,Ana Daniela; Scapim,Carlos Alberto; Machado,Maria de Fátima Pires da Silva; Mangolin,Claudete Aparecida; Silva,Tereza Aparecida; Cantagali,Liriana Belizário; Teixeira,Flávia França; Mora,Freddy. |
| Information on genetic diversity is essential to the characterization and utilization of germplasm. The genetic diversity of twenty-two sweet corn cultivars (seventeen open-pollinated varieties, OPV, and five hybrids, H) was investigated by applying simple sequence repeat markers. A total of 257 primers were tested, of which 160 were found to be usable in terms of high reproducibility for all the samples tested; 45 were polymorphic loci, of which 30 were used to assess the genetic diversity of sweet corn cultivars. We detected a total of 86 alleles using 30 microsatellite primers. The mean polymorphism was 82 %. The highest heterozygosity values (Ho = 0.20) were found in the PR030-Doce Flor da Serra and BR427 III OPVs, whereas the lowest values (0.14) were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Simple sequence repeats; Neighbor-joining; Maize germplasm. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162015000600513 |
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