Diversity in Phaseolus Species in Relation to the Common Bean

Debouck, Daniel G.

doi:10.1007/978-94-015-9211-6_2

Cited by 64 publications

(92 citation statements)

References 107 publications

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“…Typically, P. dumosus is resolved to be more closely related to P. vulgaris when cpDNA is used, but to P. coccineus with nuclear markers. It has also been proposed that a reticulation event may have occurred during the evolution of P. dumosus, possibly also involving P. costaricensis (Llaca et al, 1994;Debouck, 1999). However, most recent analyses in Phaseolus have focused on the relationships of P. vulgaris or P. coccineus, and only small numbers of P. dumosus individuals have been investigated.…”

Section: Introductionmentioning

confidence: 99%

Origin of year-long bean (Phaseolus dumosusMacfady, Fabaceae) from reticulated hybridization events between multiplePhaseolusspecies

Mina-Vargas

McKeown

Flanagan

et al. 2016

Ann Bot

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Background and Aims Improved understanding of the secondary gene pools of crops is essential for advancing genetic gain in breeding programmes. Common bean, Phaseolus vulgaris, is a staple crop with several wild relatives in its secondary gene pool. The year-long bean, P. dumosus, an important crop in Guatemala, is considered particularly closely related to P. vulgaris and a potential source of novel variation. However, the genetic diversity and relationship to other Phaseolus species of P. dumosus remain unclear.Methods We conducted the first comprehensive investigation of P. dumosus genetic diversity using both nuclear and chloroplast genome markers. Our nuclear marker set included over 700 markers present within the Phaseolus DArT (Diversity Arrays Technology) array, which we applied to P. dumosus and other relatives of P. vulgaris (including every secondary gene pool species: P. acutifolius, P. albescens, P. coccineus and P. costaricensis).Key Results Phaseolus dumosus arose from hybridization of P. vulgaris and P. coccineus, followed by at least two later hybridizations with sympatric congener populations. Existing P. dumosus collections have low genetic diversity.Conclusions The under-utilized crop P. dumosus has a complex hybrid origin. Further sampling in the region in which it arose may uncover additional germplasm for introgressing favourable traits into crops within the P. vulgaris gene pool.

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Section: Introductionmentioning

confidence: 99%

Origin of year-long bean (Phaseolus dumosusMacfady, Fabaceae) from reticulated hybridization events between multiplePhaseolusspecies

Mina-Vargas

McKeown

Flanagan

et al. 2016

Ann Bot

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“…Growth habit I genotypes are determinate with bush-type architecture, while Growth habits II and III are both indeterminate, with bush and prostrate architectures, respectively (Debouck et al, 1986).…”

Section: Sites and Plant Materialsmentioning

confidence: 99%

Sowing Density Effect on Common Bean Leaf Area Development

et al. 2016

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Sowing density effect on common bean leaf area developmentThe International Center for Tropical Agriculture (CIAT) believes that open access contributes to its mission of reducing hunger and poverty, and improving human nutrition in the tropics through research aimed at increasing the eco-efficiency of agriculture.CIAT is committed to creating and sharing knowledge and information openly and globally. We do this through collaborative research as well as through the open sharing of our data, tools, and publications. Citation:Ricaurte, José Jaumer; Clavijo Michelangeli, Jose A.; Sinclair, Thomas R.; Rao, Idupulapati Madhusudana; Beebe, Stephen. 2016. Sowing density effect on common bean leaf area development. Crop Science. 56: 1-9. ) at the growth habit, but not genotype level. These differences in node addition and leaf development dynamics translated to marked differences between growth habits and sowing densities in estimated leaf area indices, and consequently, in the estimated fraction of intercepted light at lower densities.3

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“…The ancestors of P. vulgaris L. become visible to have created two distinctive gene pools one in Mesoamerica (Mexico and Central America) and the other in the Southern Andes, a mountain range in South America (Burle et al, 2010). An ancestral wild form is still found at the border line between temperate and sub-tropical dry climatic regions (Debouck, 1999). They were brought to Europe and Africa during the 16th century by returning Spanish and Portuguese explorers (Ibarra-Perez et al, 1997).…”

Section: Introductionmentioning

confidence: 99%

“…There are about 50 species under the genus Phaseolus. Phaseolus vulgaris L. was follow-on from wild ancestors distributed from Northern Mexico to Northwestern Argentina (Ibarra-Perez et al, 1997;Debouck, 1999). The ancestors of P. vulgaris L. become visible to have created two distinctive gene pools one in Mesoamerica (Mexico and Central America) and the other in the Southern Andes, a mountain range in South America (Burle et al, 2010).…”

Section: Introductionmentioning

confidence: 99%