Divergência genética em feijão preto

Carvalho, Fernando Irajâ Félix de; Hemp, Silmar; Oliveira, Antônio Costa de; Silva, Simone Alves da

doi:10.1590/s0103-84781999000300008

Cited by 10 publications

(8 citation statements)

References 2 publications

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“…Probably, the exact concordance of clustering never existed due to the fact of significant interaction of genotype for environment for five of the six characteristics used in joint analysis. Similar results were found by C oimbra et al (1999) that, when studying genetic divergence among twenty genotypes of bean from black commercial group in Lages, Santa Catarina, in two environments, through the Tocher method.…”

Section: Resultssupporting

confidence: 85%

Genetic divergence of the common bean (Phaseolus vulgaris L.) group Carioca using morpho-agronomic traits by multivariate analysis

et al. 2007

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The objective of this study was to evaluate the genetic divergence among the common bean group Carioca by the Tocher method (based on Mahalanobis distance) and graphic dispersion of canonic variables, aiming to identify populations with wide genetic variability. Eighteen genotypes were evaluated in four seasons using a randomized block design with four replications. The mean weight of 100 seeds, in three experiments, and the mean number of pods per plant, in one experiment, were the most important characteristics for the genetic divergence, representing more than 46% of the total variation in the first canonic variable. The first two canonic variables were sufficient to explain about 88.23% of the total variation observed in the average of the four environments. The results showed that CNFC 8008 and CNFC 8009 genotypes presented the best yield averages in all the experiments. While Pérola, Princesa and CNFC 8005 cultivars were the most dissimilar for morpho‐agronomic traits. Therefore, the combinations of Pérola×CNFC 8008, CNFC 8005×CNFC 8009, Pérola×CNFC 8009, Princesa×CNFC 8008 and Princesa×CNFC 8009 were indicated for interpopulational breeding.

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Section: Resultssupporting

confidence: 85%

Genetic divergence of the common bean (Phaseolus vulgaris L.) group Carioca using morpho-agronomic traits by multivariate analysis

et al. 2007

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“…This fact indicated that the Tocher method was efficient in distinguishing cultivars from the different gene pools. The use of the genetic dissimilarity measure as a predictable hybrid value at the beginning of breeding programs, where there are a huge number of genotypes, is a very useful tool, because the parents for hybridization, instead of randomized, could be chosen by a genetic divergence study restricting crossings to only more promising combinations with economy in time and work (MALUF;COIMBRA et al, 1999;MACHADO et al, 2002;RIBEIRO;STORCK, 2003).…”

Section: Resultsmentioning

confidence: 99%

Genetic divergence in common bean landrace cultivars from Mato Grosso do Sul State

et al. 2009

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The present study had as objective to evaluate of the genetic divergence among 35 landraces of common bean. The experimental design was carried out in a randomized block with four repetitions. The variance analysis revealed significant difference at 1 and 5% levels of probability for the evaluated characteristics. The Cluster analysis based in the morpho-agronomic traits presented difference among Andean and Mesoamerican landrace cultivars, which it allocated the landrace cultivars in different groups. The Tocher and the Nearest Neighbor methods demonstrated that the most dissimilars cultivars were Carioca sem Cipó and Jalo, whereas Roxinho Mineiro and Carioca sem Cipó cultivars were the more similars. The first two canonic variables were sufficient to explain about 81.90% of the total variation showed in this study. These results reveal large genetic diversity among the landraces from Mato Grosso do Sul state. Key words: Phaseolus vulgaris, multivariate analysis, morpho-agronomic traits ResumoO presente estudo teve como objetivo avaliar a divergência genética entre 35 cultivares tradicionais de feijão. O delineamento experimental foi realizado em blocos casualizados com 4 repetições. A análise de variância revelou diferença significativa ao nível de 1 e 5% de probabilidade para as características avaliadas. A análise de agrupamento baseada nas características morfo-agronômicas apresentou diferença entre as cultivares crioulas Andina e Mesoamericana, o qual alocou as cultivares crioulas em grupos diferentes. Os métodos de Tocher e Vizinho Mais Próximo demonstraram que as cultivares mais dissimilares foram a Carioca sem Cipó e Jalo, enquanto que Roxinho Mineiro e Carioca sem Cipó foram as mais similares. As duas primeiras variáveis canônicas foram suficientes para explicar cerca de 81,90% da variação total observada neste estudo. Os resultados revelaram uma ampla diversidade genética entre as cultivares tradicionais do estado do Mato Grosso do Sul. Palavras-chave: Phaseolus vulgaris, análise multivariada, características morfo-agronômicas 1 Professor, Dr.,

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“…Gonçalves (1979) trabalhando com análise de trilha, observou que o desdobramento das correlações entre o número de vagem por planta e a produtividade de grãos apresentou elevado efeito direto e positivo na PG. Coimbra et al (1999), observaram maiores efeitos diretos positivos das correlações genotípicas dos caracteres número de vagens por planta e peso médio de 100 sementes na produtividade de grãos. Esses resultados demonstram a importância dessas duas características na produtividade de grãos dessa leguminosa.…”

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Divergência genética em germoplasma de feijoeiro comum coletado no estado do Paraná, Brasil

et al. 2006

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ResumoO presente trabalho teve como objetivo avaliar a divergência genética entre 63 cultivares crioulas de feijão comum (Phaseolus vulgaris L.) The results demonstrated that the most divergent cultivars were Carioca Pitoco and Jalo vermelho, whereas the most similar were Carioca Pitoco and Carioca. These results point out the existence of genetic variability in common bean cultivars used by farmers, and multivariate analysis methods demonstrated efficiency to detect them, separating the cultivars Carioca and Jalo in different groups. Therefore, in order to compose the interpopulation selection programs the Carnaval (33), Carioca Pitoco (16), Pérola (14) and Carnaval (27) cultivars are recommend because they are the most divergent ones and possess one of the best averages in productivity.

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Divergência genética em feijão preto

Cited by 10 publications

References 2 publications

Genetic divergence of the common bean (Phaseolus vulgaris L.) group Carioca using morpho-agronomic traits by multivariate analysis

Genetic divergence of the common bean (Phaseolus vulgaris L.) group Carioca using morpho-agronomic traits by multivariate analysis

Genetic divergence in common bean landrace cultivars from Mato Grosso do Sul State

Divergência genética em germoplasma de feijoeiro comum coletado no estado do Paraná, Brasil

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