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| Menezes,Ivandilson Pessoa Pinto de; Hoffmann,Lúcia Vieira; Alves,Milena Ferreira; Morello,Camilo de Lelis; Barroso,Paulo Augusto Vianna. |
| O objetivo deste trabalho foi selecionar coeficientes de similaridade para serem aplicados a conjuntos de genótipos de algodoeiro com baixa diversidade genética. Analisou-se um conjunto de 65 linhagens e 4 cultivares de algodão, com marcadores de RAPD e SSR, e estimou-se a similaridade genética de acordo com sete coeficientes de similaridade: Coincidência Simples, Rogers & Tanimoto, Ochiai, Hamman, Jaccard, Dice e Russel & Rao. A adequação dos coeficientes ao conjunto de genótipos foi verificada por correlação entre as matrizes de distância, índice de consenso entre os dendrogramas e otimização de Tocher. As análises mostraram que o coeficiente de Russel e Rao foi divergente em relação aos demais e seu uso não é recomendável. Entre os... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Gossypium hirsutum; Diversidade genética; Marcadores RAPD; Marcadores SSR. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2008001000012 |
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| Pupim Junior,Osmério; Schuster,Ivan; Pinto,Ronald Barth; Pires,Ely; Belot,Jean-Louis; Silvie,Pierre; Chitarra,Luiz Gonzaga; Hoffmann,Lúcia Vieira; Barroso,Paulo. |
| The objective of this work was to determine the inheritance of cotton blue disease resistance by cotton plants. Populations derived from the CD 401 and Delta Opal resistant varieties were evaluated, through a greenhouse test with artificial inoculation by viruliferous aphids. Cotton blue disease resistance is conditioned by one dominant gene, both in CD 401 and Delta Opal varieties. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Gossypium hirsutum; Aphis gossypii; Genetic resistance; Luteoviruses. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2008000500015 |
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| Pereira,Guilherme da Silva; Cazé,Ana Luíza Ramos; Silva,Michelle Garcia da; Almeida,Vanessa Cavalcante; Magalhães,Fernanda Oliveira da Cunha; Silva Filho,João Luís da; Barroso,Paulo Augusto Vianna; Hoffmann,Lúcia Vieira. |
| Abstract: The objective of this work was to identify polymorphic simple sequence repeat (SSR) markers for varietal identification of cotton and evaluation of the genetic distance among the varieties. Initially, 92 SSR markers were genotyped in 20 Brazilian cotton cultivars. Of this total, 38 loci were polymorphic, two of which were amplified by one primer pair; the mean number of alleles per locus was 2.2. The values of polymorphic information content (PIC) and discrimination power (DP) were, on average, 0.374 and 0.433, respectively. The mean genetic distance was 0.397 (minimum of 0.092 and maximum of 0.641). A panel of 96 varieties originating from different regions of the world was assessed by 21 polymorphic loci derived from 17 selected primer pairs.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Gossypium hirsutum; Cultivar discrimination; Intraspecific polymorphism; Microsatellite. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2015000700571 |
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| Dantas,Ana Carolina Assis; Barroso,Paulo Augusto Vianna; Hoffmann,Lúcia Vieira; Alves,Milena Ferreira; Andrade,Francisco Pereira de. |
| Mocó cotton was the most important crop in Northeastern Brazil. Local varieties had been developed before governmental breeding programs, which should be identified and preserved as a genetic resource. The aim of this work was to select SSR markers which can be used to monitor gene flow from herbaceous to mocó cotton plants, using non transgenic upland cotton as a pollen source. Unique mocó cotton feral populations were identified in the state of Rio Grande do Norte, and mother plants and their seeds were collected. Allele frequencies were studied among fifteen plants from these populations using 64 SSR primer pairs. Ten SSR markers, with alleles exclusive to mocó or upland genotypes, were selected to monitor gene flow by paternity analysis (BNL3627; 2960;... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biosafety; Molecular markers; Genetic resources. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902012000100020 |
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