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| Priolli,Regina Helena Geribello; Mendes-Junior,Celso Teixeira; Sousa,Sandra Mara Bispo; Sousa,Neylson Eustáquio Arantes; Contel,Eucleia Primo Betioli. |
| O objetivo deste trabalho foi detectar os efeitos do melhoramento sobre a diversidade do germoplasma da soja cultivada nas três ultimas décadas, por meio da comparação de seis programas de melhoramento e períodos de lançamento de cultivares, utilizando locos microssatélites. Em relação aos programas de melhoramento, todos os locos apresentaram diferenças significativas em suas distribuições alélicas. Alguns locos eram compostos de alelos exclusivos em alguns programas de melhoramento, enquanto outros foram compostos sempre dos mesmos alelos em maior freqüência para todos os programas. A AMOVA indicou maior porção da variância devido a cultivares dentro de programas e somente 5,3% (p<0,05) devido à diferença entre programas. Quando comparados os... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glycine max; SSR; Germoplasma; Erosão genética. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2004001000004 |
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| Priolli,Regina Helena Geribello; Pinheiro,José Baldin; Zucchi,Maria Imaculada; Bajay,Miklos Maximiliano; Vello,Natal Antonio. |
| In this study, simple sequence repeats (SSR) loci and pedigree data were used to investigate the genetic relationship in a group of 168 Brazilian soybean cultivars. Eighteen SSR loci produced an average of 5.06 alleles and a mean gene diversity of 0.58 for the cultivars studied. Genetic distance (GD) was determined using the modified Roger's Wright distance, and a final dendrogram was in agreement with the cultivar pedigree. A distance matrix based on the coefficient of parentage scores was also generated for the cultivars, which ranged from 0 to 1, with a mean of 0.18, whereas SSR-based genetic similarity (1- GD) ranged from 0.01 to 0.90, with a mean of 0.25. Mantel's Z test showed that the similarity matrices generated from both the data sets were low,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coefficient of parentage; Glycine max (L.) Merr.; Microsatellite markers. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132010000300004 |
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| Abreu,Aluana Gonçalves; Priolli,Regina Helena Geribello; Azevedo-Filho,Joaquim Adelino; Nucci,Stella Maris; Zucchi,Maria Imaculada; Coelho,Ricardo Marques; Colombo,Carlos Augusto. |
| Acrocomia aculeata is a perennial, fruit-producing palm tree, native to tropical forests. Its fruits have spurred interest because of their significant potential for use in the cosmetic industry and as feedstock for biofuel. In the present study, the genetic structure and mating system in Acrocomia aculeata were analyzed, using eight nuclear microsatellite loci and samples from São Paulo and Minas Gerais states, Brazil. By means of Bayesian analysis, these populations were clustered into two or three groups. A high multilocus outcrossing rate suggests that outcrosses were predominant, although a certain degree of biparental inbreeding also occurred. Thus, although monoecious and self-compatible, there is every indication that A. aculeata bears a mixed... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: SSR; Mating system. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572012000100016 |
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