A Biosystematic and Evolutionary Study of Capsicum baccatum (Solanaceae)

Eshbaugh, W. Hardy

doi:10.2307/2805720

Cited by 71 publications

(82 citation statements)

References 14 publications

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“…Thereby, Eshbaugh (1970) on the basis of morphology and results of crosses, proposed the relationship of ancestry between C. baccatum var. pendulum (domesticated) and C. baccatum var.…”

Section: Discussionmentioning

confidence: 99%

Morphological and genetic relationships between wild and domesticated forms of peppers (Capsicum frutescens L. and C. chinense Jacquin)

et al. 2014

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ABSTRACT. Capsicum chinense and C. frutescens peppers are part of the Brazilian biodiversity, and the Amazon basin is the area of greatest diversity for them, especially for that former species. Nevertheless, little is known about their evolutionary history. Aiming to identify genotypes with wild and domesticated characteristics, 30 accessions of the germplasm bank of Embrapa were characterized using morphological descriptors and ISSR molecular markers. Of the 72 primers tested, 42% showed amplification and produced 136 amplicons with some of the primers, namely i7Pv and i57Zm, allowing the identification of each species. ISSR also revealed polymorphisms within a species, especially between domesticated and wild forms. Four wild accessions collected in the Amazon region (CNPH 4315, CNPH 4372, CNPH 4337 and CNPH 4325B) popularly known as "olho-de-peixe" or "olho-de periquito" were molecularly classified as C. chinense and showed fruit with similar characteristics as the wild species: upright position, rounded to campanulate shape, small size (1.0 cm long and 0.8 cm wide), average weight of 0.2 g, dark-red color when ripe, easy detachment of calyx and presence of calyx annular constriction (discriminative of C. chinense). The wild form CNPH 4353 known as "malaguetinha" was morphologically and molecularly classified as C. frutescens, demonstrating a more preserved morphology in C. frutescens than in C. chinense. A significant correlation was found between morphological and molecular characterization, and the combination of the two analyses was effective in identifying and classifying the wild forms and contributing to evolutionary studies in the genus.

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“…Thereby, Eshbaugh (1970) on the basis of morphology and results of crosses, proposed the relationship of ancestry between C. baccatum var. pendulum (domesticated) and C. baccatum var.…”

Section: Discussionmentioning

confidence: 99%

Morphological and genetic relationships between wild and domesticated forms of peppers (Capsicum frutescens L. and C. chinense Jacquin)

et al. 2014

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“…são reconhecidamente relacionadas e formam um tripé ancestral mútuo, significando que possuem um mesmo "pool" genético (Eshbaugh, 1979;De Witt & Bosland, 1996;Zewdie & Bosland, 2001). As três espécies somam juntas mais de 94% de todos os morfotipos levantados em Roraima.…”

Section: As Demais Espécies {Annuum-chinense-frutescens)unclassified

Pimentas do gênero Capsicum cultivadas em Roraima, Amazônia Brasileira. I. Espécies domesticadas

Barbosa

Luz

Filho³

et al. 2002

Acta Amaz.

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Foram inventariadas as pimentas domesticadas do gênero Capsicum que são cultivadas no Estado de Roraima, extremo norte da Amazônia brasileira. O levantamento foi realizado em comunidades indígenas e não indígenas. Dos 163 acessos registrados, C. chinense Jacq. (76,7%) foi a espécie com o maior número, seguida de C. frutescens L. (9,8%), C. annuum L. (8,0%) e C. baccatum v. pendulum Wild. (5,5%). As formas de fruto mais encontradas foram "alongada" (42,9%) e "ovalada" (27,0%). C. chinense apresentou a maior diversidade de formas enquanto que as demais estavam concentradas na forma "alongada". A cor predominante dos frutos maduros foi a vermelha (64,4%). Isoladamente, C. chinense foi melhor distribuída entre as cores básicas amarela (44,8%) e vermelha (55,2%), independente das diferentes tonalidades assumidas por cada acesso (alaranjado, vermelho-escuro, etc). O nível de pungência sensorial com maior número de registros foi o "alto" (62,6%), seguido do "médio" (16,0%), "baixo" (15,3%) e "muito alto" (6,1%). Dos 105 acessos de coloração vermelha, 67,6% possuía pungência "alta" ou "muito alta". C. chinense do tipo "murupi" e "olho-de-peixe", juntamente com "malagueta" (C. frutescens) são os morfotipos mais tradicionalmente consumidos entre as comunidades indígenas locais.

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“…The center of origin for C. baccatum is believed to lie in Bolivia and southern Peru (D'Arcy and Eshbaugh 1974;Eshbaugh 1970;Hunziker 1950). A wild Capsicum species, C. chacoense, native to the Chaco region in Paraguay and Argentina, has been speculated to be a progenitor to C. baccatum, albeit not yet confirmed by molecular data (Walsh and Hoot 2001).…”

Section: Introductionmentioning

confidence: 98%

Genetic diversity and population structure of Capsicum baccatum genetic resources

Albrecht¹,

Zhang

Saftner

et al. 2011

Genet Resour Crop Evol

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Capsicum baccatum is one of five domesticated pepper species which, despite its morphological and ecological variability, has been underexploited for germplasm improvement. Utilizing a broad spectrum of domesticated and wild C. baccatum germplasm, we utilize AFLP markers to describe the species' molecular diversity and population structure in the South American gene pool. Analysis of molecular variance (AMOVA) revealed greater genetic diversity in the wild form of C. baccatum (C. baccatum var. baccatum) than in the domesticated form of the species (C. baccatum var. pendulum). Both Bayesian and distance based clustering analysis, as well as principal coordinates analysis (PCA), concordantly demonstrated admixture/shared ancestry between wild and cultivated C. baccatum botanical varieties. Two principal genetic groups were identified in the domesticated C. baccatum accessions largely based on their geographic distribution in South America. One group was predominated by accessions from the western territories of the species' distribution (Peru, Colombia, Ecuador, Bolivia, Chile and northwestern Argentina) and the second by accessions from the eastern regions, Paraguay and eastern Argentina). The two genetic groups overlapped in the geographic location of present-day Bolivia. The grouping pattern suggested that C. baccatum was domesticated in multiple sites and that its evolution took two lineages followed by lineage differentiation. The wild accessions most closely related to the cultigens were found in the highlands of Peru and Bolivia, which support the early hypothesis that this region is one of the domestication sites of this species. A Bayesian assignment analysis demonstrated that Brazilian wild forms of C. baccatum were genetically distant to all other accessions and made little to no contribution to the domesticated genepool. Moreover, results of clustering analysis suggested that C. baccatum likely originated from present day Paraguay. Analysis of inter-specific relationships across selected Capsicum species supported independent lineages for the two crossability groups within Capsicum, the baccatum species-complex (including C. baccatum) and the annuum speciescomplex (including C. annuum, C. chinense and C. frutescens). However, the results did not support taxonomic distinction of C. baccatum var. umbilicatum from C. baccatum var. pendulum. The present study provides new insights into the domestication of C. baccatum. The results will be useful for identifying accessions for crop improvement and guiding the development of in situ and ex situ conservation programs.

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A Biosystematic and Evolutionary Study of Capsicum baccatum (Solanaceae)

Cited by 71 publications

References 14 publications

Morphological and genetic relationships between wild and domesticated forms of peppers (Capsicum frutescens L. and C. chinense Jacquin)

Morphological and genetic relationships between wild and domesticated forms of peppers (Capsicum frutescens L. and C. chinense Jacquin)

Pimentas do gênero Capsicum cultivadas em Roraima, Amazônia Brasileira. I. Espécies domesticadas

Genetic diversity and population structure of Capsicum baccatum genetic resources

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