Genetic Diversity among Wild Common Beans from Northwestern Argentina Based on Morpho-agronomic and RAPD Data

Galván, Marta Zulema; Menéndez-Sevillano, M. Carmen; Ron, Antonio M. De; Santalla, Marta; Balatti, Pedro Alberto

doi:10.1007/s10722-004-0981-2

Cited by 34 publications

(23 citation statements)

References 27 publications

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“…The genetic distance matrix showed that the AGD within the wild type accessions was higher than the AGD within P. augusti, within the Mesoamerican gene pool or within the Andean gene pool and was similar to the AGD among the wild versus cultivated Andean beans. These results suggest wide genetic variability in the wild accessions of P. vulgaris in Bolivia and are in contrast with previous studies with wild Andean populations of common bean from north-western Argentina (Galván et al, 2006), which were more limited in diversity.…”

Section: Discussioncontrasting

confidence: 99%

Genetic diversity of bean (Phaseolus) landraces and wild relatives from the primary centre of origin of the Southern Andes

Ávila

Blair

Reyes³

et al. 2012

Plant Genet. Res.

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The Southern Andes, especially the inter-Andean valleys of south Bolivia, is thought to be a probable point of domestication within the primary centre of diversity for Andean common beans (Phaseolus vulgaris L.). The national Phaseolus germplasm collection of Bolivia is maintained by the Pairumani Foundation and consists of 449 accessions where most of the accessions are of common bean but some are of related cultivated and wild species. The goal of this study was to determine the genetic diversity of this collection by sampling 174 accessions of P. vulgaris and an outgroup of eight Phaseolus augusti, two Phaseolus lunatus and one Phaseolus coccineus genotype. The genetic diversity and population structure were estimated using 29 microsatellite markers. High levels of polymorphism were found, with a total of 311 alleles identified and an average of 10.7 alleles per marker. Correspondence analysis and an unweighted pair group method with arithmetic mean-based dendrogram distinguished P. vulgaris from the other species of Phaseolus. Common bean accessions were separated into two groups: the first one including Andean controls and most accessions from high altitudes with morphological characteristics and growth habits typical of this gene pool; the second one including Mesoamerican controls and accessions from low altitudes. Inside the Andean gene pool, the wild accessions were diverse and separated from the weedy and cultivated accessions. Low geographical distances between collection sites (up to 100 km) were shown to be related to low genetic distances. These results are important for the conservation of common beans in the Southern Andes.

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Section: Discussioncontrasting

confidence: 99%

Genetic diversity of bean (Phaseolus) landraces and wild relatives from the primary centre of origin of the Southern Andes

Ávila

Blair

Reyes³

et al. 2012

Plant Genet. Res.

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“…Some researchers have suggested that the use of morphological traits should be complemented with more accurate techniques to achieve reliable evaluation and characterisation of species diversity (Escribano et al 1997;galvan et al 2006). Further, in recent years successful results could be obtained using DNA markers and molecular techniques for determination of genetic traits for bean improvement.…”

Section: Discussionmentioning

confidence: 99%

“…Further, in recent years successful results could be obtained using DNA markers and molecular techniques for determination of genetic traits for bean improvement. Tohme et al (1996), Alvarez et al (1998), Sicard et al (2005), and Galvan et al (2006) analysed diversity among common beans by molecular tools.…”

Section: Discussionmentioning

confidence: 99%

Diversity and use of pinto bean(Phaseolus vulgaris)populations from Samsun, Turkey

Balkaya¹,

Ergün

2008

New Zealand Journal of Crop and Horticultural Science

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In the north of Turkey, pinto bean (Phaseolus vulgaris) is one of the most important crops. Forty-four analysed populations of pinto bean were collected from Samsun province in northern Turkey. The variability of the 44 self-pollinated populations of pinto bean was evaluated on morphological, reproductive, and agronomical traits during 2003-2004. Individual data for 24 traits (14 quantitative and 10 qualitative) related to earliness and yield, and plant, pod, and seed structure were analysed using Principal Component (PC) analysis which revealed differences among the populations. The PC analysis showed that the first four PC axes explained 83.3% of the total multivariate variation. Characters with high coefficients in the first PC (earliness and yield traits), and the second PC (pod length, pod width, and pod form) were considered the most important since these axes explain nearly half of the total variation. Data were subjected to cluster analysis and several groups were identified with most of the populations. Clustered into six groups, a dendrogram was prepared to evaluate morphological differences among populations. It revealed high variation. The results provide information on the diversity and breeding values of Turkish pinto bean germplasm.

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“…In common bean, genetic diversity has been evaluated in the past using both morphological and molecular markers (Galvan et al 2006). Among molecular markers, microsatellites are one of the most popular genetic markers due to their characteristic features like high polymorphism, abundant informativeness, convenience of assay by PCR, and distribution throughout the genome (Gupta and Varshney 2000).…”

Section: Introductionmentioning

confidence: 99%

Comparative analysis of diversity based on morpho-agronomic traits and microsatellite markers in common bean

Kumar

Sharma

et al. 2009

Euphytica

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Morpho-agronomic traits and microsatellite markers were used to survey genetic diversity in 115 common bean genotypes that included 70 Indian landraces, 24 released varieties and 21 exotic accessions. Twelve morpho-agronomic traits, namely, days to 50% flowering, leaflet length, leaflet width, pod length, pod width, number of pods per plant, days to maturity, seed length, seed width, number of seeds per pod, 100 seed weight and seed yield per plant were studied. Field data of two consecutive years were subjected to multivariate analysis as proposed by Mahalanobis's D 2 -statistics, Tochers method of clustering and combined analysis of variance. Seventeen microsatellite markers were also used to examine genetic diversity at molecular level that showed polymorphic information content (PIC) in the range of 0.00-0.684. Dendrograms based on Euclidean distances and UPGMA analysis showed the presence of majority of released varieties into single cluster, which pointed toward their low genetic base in comparison to indigenous landraces and exotic germplasm. Significant correlation existed between morphological genetic distance and microsatellite genetic distance tested by Mantel test (r = 0.876).

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Genetic Diversity among Wild Common Beans from Northwestern Argentina Based on Morpho-agronomic and RAPD Data

Cited by 34 publications

References 27 publications

Genetic diversity of bean (Phaseolus) landraces and wild relatives from the primary centre of origin of the Southern Andes

Genetic diversity of bean (Phaseolus) landraces and wild relatives from the primary centre of origin of the Southern Andes

Diversity and use of pinto bean(Phaseolus vulgaris)populations from Samsun, Turkey

Comparative analysis of diversity based on morpho-agronomic traits and microsatellite markers in common bean

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