Divergência Genética Entre Genótipos De Feijoeiro a Partir De Técnicas Multivariadas

Machado, C. de F.; Nunes, Glauber Henrique de Sousa; Ferreira, Daniel Furtado; Santos, João Bosco dos

doi:10.1590/s0103-84782002000200011

Cited by 12 publications

(12 citation statements)

References 10 publications

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“…Low variation in the first two components was also observed by Machado et al (2002), Rodrigues et al (2002) and Chiorato et al (2005) in studies of common bean. Cruz and Carneiro (2006) argue that, when at least 80 % of the variation is not absorbed by the first two components, a two-dimensional graph impairs the visualization of the dispersion, and the technique of principal components is ineffective to show the genetic diversity.…”

Section: Resultsmentioning

confidence: 60%

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Characterization of genetic variability among common bean genotypes by morphological descriptors

Lima

Carneiro

Carneiro³

et al. 2012

Crop Breed. Appl. Biotechnol.

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Section: Resultsmentioning

confidence: 60%

“…The Euclidean distance, Mahalanobis´ distance and the coincidence index (Cruz and Carneiro 2006) are used as dissimilarity measures. To assess the genetic variability of common bean, some authors have used multivariate analysis methods (Machado et al 2002, Rodrigues et al 2002, Chiorato et al 2005, Ceolin et al 2007, Elias et al 2007.…”

Section: Introductionmentioning

confidence: 99%

Characterization of genetic variability among common bean genotypes by morphological descriptors

Lima

Carneiro

Carneiro³

et al. 2012

Crop Breed. Appl. Biotechnol.

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“…In agreement with this investigation, Vasic et al (2008) evaluated common bean population and reported that six PCs explained 80% of the total variability. However, other investigators observed low variation in the first two components in common bean (Machado et al, 2002;Rodrigues et al, 2002;Chiorato et al, 2007;Lima et al, 2012) using 12,51, 220, and 100 genotypes, respectively.…”

Section: Discussionmentioning

confidence: 84%

Genetic diversity in speckled bean (Phaseolus vulgaris L.) genotypes in Ethiopia

Gelaw¹

2017

J. Plant Breed. Crop Sci.

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In the present investigation, the genetic variability of 64 speckled type common bean genotypes were evaluated at Haramaya University during 2015 cropping season using 8 × 8 simple lattice design with three replications. The analysis of variance indicated highly significant (P<0.01) differences among genotypes for all the nine characters studied. High genotypic coefficient of variation (GCV) was observed for grain yield, while high phenotypic coefficients of variation (PCV) were recorded for number of seeds plant -1 , grain yield ha -1 and common bacterial blight resistance. For all the traits, estimates of PCV were higher than GCV indicating the presence of environmental influence. High heritability values and genetic advances were recorded in grain yield. Cluster analysis using Mahalanobis distance delineated the genotypes into six main groups. Cluster I contain the largest number of genotypes (43.75%) followed by clusters II (26.56%) and III (10.94%) while clusters IV, V and VI contain four genotypes each. The D 2 analysis indicated that there was a significant difference among the clusters. The maximum inter cluster distance was observed between cluster IV and V. Principal component analysis (PCA) was performed to assess the variation and correlation among genotypes for the traits and grouped them based on their performance. The combination of the first four principal components explained more than 85.74% of the genotypic variations. Therefore, exploiting the genetic diversity among clusters would broaden the genetic base of speckled bean breeding populations.

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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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Divergência Genética Entre Genótipos De Feijoeiro a Partir De Técnicas Multivariadas

Cited by 12 publications

References 10 publications

Characterization of genetic variability among common bean genotypes by morphological descriptors

Characterization of genetic variability among common bean genotypes by morphological descriptors

Genetic diversity in speckled bean (Phaseolus vulgaris L.) genotypes in Ethiopia

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

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