Use of AFLPS to distinguish landraces of pejibaye (Bactris gasipaes) in brazilian Amazonia

Clement, Charles R.; Sousa, N. R.; Rodrigues, Doriane Picanço; Astolfi-Filho, Spártaco; Moreno, Yolanda Núñez; Pascual, V.; Rodrí­guez, Francisco José Robles

doi:10.1590/s0103-90162002000400019

Cited by 16 publications

(14 citation statements)

References 4 publications

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“…In studies on the palm species Euterpe edulis, Cardoso et al (2000) used five primer pairs and found 429 fragments of which 395 (92 %) were polymorphic. To evaluate the existence of three races of peach palm, a domesticated species, Clement et al (2002) used six primer combinations generating 245 fragments, of which 135 (55.1n%) were polymorphic.…”

Section: Resultsmentioning

confidence: 99%

Genetic diversity in natural populations of Buriti (Mauritia flexuosa L. f.)

Gomes

Lopes

Bentes

et al. 2011

Crop Breed. Appl. Biotechnol.

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Section: Resultsmentioning

confidence: 99%

Genetic diversity in natural populations of Buriti (Mauritia flexuosa L. f.)

Gomes

Lopes

Bentes

et al. 2011

Crop Breed. Appl. Biotechnol.

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“…Também estes dados discordam de resultados obtidos com técnicas moleculares e isoenzimas (Picanço et al, 1999;Gallego Rodrigues et al,1999;Rodrigues, 2001;Clement et al, 2002;Sousa et al, 2002), onde concluíram que a raça Solimões não existe. As três técnicas estatís-ticas multivariadas mostraram, em conjunto, ser um método eficiente de discriminação das raças Pará, Putumayo e Solimões.…”

Section: Resultsunclassified

“…Trabalhos realizados com biologia molecular, para verificar a existência das três raças (Rodrigues, 2001;Clement et al, 2002;Souza et al, 2002), negam a existência da raça Solimões. Quando se deseja discriminar grupos ou populações, Sokal (1965) e Sneath & Sokal (1973) afirmam que a seleção das características é fundamental.…”

Section: Introductionunclassified

Estatística multivariada na discriminação de raças amazônicas de pupunheiras (Bactris gasipaes Kunth) em Manaus (Brasil)

Martel¹,

Ferraudo

Môro

et al. 2003

Rev. Bras. Frutic.

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RESUMO -As raças e populações de pupunheiras ao longo dos rios Amazonas e Solimões apresentam grande variabilidade genética ainda não totalmente caracterizada. Neste estudo, foram aplicadas técnicas estatísticas multivariadas a 15 descritores morfológicos numa tentativa de caracterizar, morfometricamente, três raças existentes ao longo da Bacia desses rios. As três análises em conjunto permitiram uma discriminação das raças, mostrando também que os descritores mais importantes nessa seleção foram: número de espigas, comprimento da ráquis, peso do fruto, espessura das cascas, facilidade para descascar os frutos, peso das cascas, sabor dos frutos, espessura da polpa, distância morfológica dos frutos e peso da semente. Termos para indexação: descritores, análise multivariada, análise de componentes principais, análise discriminante, análise de agrupamento. MULTIVARIATE ANALYSIS ON DISCRIMINATION OF AMAZONIC LANDRACES OF PEACH PALM (Bactris gasipaes Kunth) IN MANAUS, BRAZILABSTRACT-Landraces and populations of peach palm growing along the Amazon and Solimões rivers present great genetic variability, that it was not totally characterized yet. In the present study, multivariate techniques of cluster analysis, principal components analysis and discriminant analysis, were applied to fifteen morphological descriptors with the objective of morphometric characterizing three existing landraces of this plant along these rivers basins. The three analysis together allowed to discriminate the studied landraces, showing that the most important descriptors were: numbers of ears per raceme, rachis length, fruit weight, thickness of fruit bark, facility to peel fruits, weight of fruit bark, fruit flavor, pulp thickness, morphological distance of fruit and seed weight.

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“…While validation of morphometrically defined landraces has been a preoccupation of the molecular genetic analyses in the Brazilian germplasm bank (Sousa et al, 2001;Clement et al, 2002;Rodrigues et al, 2005;Cristo-Araújo et al, 2010;Santos et al, 2011), these analyses often had insufficient or unbalanced numbers of each population to work with. When sufficient numbers were available, they validated some landraces and did not validate others, specifically the Guatuso and Tuira landraces in Central America, and the Solimões landrace in central-western Amazonia (Rodrigues et al, 2005).…”

Section: Dispersal Of the Landrace Complexmentioning

confidence: 99%

Origin and Dispersal of Domesticated Peach Palm

et al. 2017

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Peach palm (Bactris gasipaes Kunth) is a Neotropical palm domesticated by Native Americans. Its domestication resulted in a set of landraces (var. gasipaes), some with very starchy fruit used for fermentation, others with an equilibrium of starch and oil used as snacks. Which of the three wild types (var. chichagui) was involved and where the domestication process began are unclear, with three hypotheses under discussion: an origin in southwestern Amazonia; or in northwestern South America; or multiple origins. We reevaluate one of the wild types, defining it as the incipient domesticate, and then evaluate these hypotheses using the Brazilian peach palm Core Collection and selected herbaria samples to: (1) model the potential distributions of wild and domesticated populations; (2) identify the probable origin of domestication with a phylogeographic analysis of chloroplast DNA sequences; and (3) determine the dispersal routes after domestication using spatial analysis of genetic diversity based on 17 nuclear microsatellite loci. The two very small-fruited wild types have distinct distributions in the northern Andes region and across southern Amazonia, both under moderately humid climates, while the incipient domesticate, partly sympatric with the southern wild type, is also found along the Equatorial Andes, in a more humid climatic envelope, more similar to that of the domesticated landraces. Two distribution models for Last Glacial Maximum conditions (CCSM4, MIROC) also suggest distinct distributions for the two wild populations. The chloroplast DNA phylogeographic network confirms the area of sympatry of the incipient domesticate and the southern wild type in southwestern Amazonia as the origin of domestication. The spatial patterns of genetic diversity confirm the proposal of two dispersals, one along the Ucayali River, into western Amazonia, northwestern South America and finally Central America; the other along the Madeira River into central and then eastern Amazonia. The first dispersal resulted in very starchy fruit for fermentation, while the second may have been later and resulted in snack fruits. Further explorations of southwestern Amazonia are essential for more precise identification of the earliest events, both with new archeological methods and genetic analyses with larger samples.

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Use of AFLPS to distinguish landraces of pejibaye (Bactris gasipaes) in brazilian Amazonia

Cited by 16 publications

References 4 publications

Genetic diversity in natural populations of Buriti (Mauritia flexuosa L. f.)

Genetic diversity in natural populations of Buriti (Mauritia flexuosa L. f.)

Estatística multivariada na discriminação de raças amazônicas de pupunheiras (Bactris gasipaes Kunth) em Manaus (Brasil)

Origin and Dispersal of Domesticated Peach Palm

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