Independent inventionism and recent genetic evidence on plant domestication

Blumler, Mark A.

doi:10.1007/bf02985258

Cited by 36 publications

(30 citation statements)

References 87 publications

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“…chichagui simplified the debate by providing a single ancestral taxon. However, most domesticates are derived from single domestication events from specific ancestral populations (Blumler 1992), so the new Bactris classification has not resolved the origin debate. Essentially, two schools of thought exist: a single domestication event, most probably in southwestern Amazonia (argued most recently by Clement 1995), although Morcote-Rios and Bernal (2001) have recently argued for the northern Andes; multiple domestication events throughout the distribution of the wild taxa (var.…”

Section: Introductionmentioning

confidence: 99%

Molecular marker-mediated validation of morphologically defined landraces of Pejibaye (Bactris gasipaes) and their phylogenetic relationships

Rodrigues

Filho

Clement

2005

Genet Resour Crop Evol

104

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RAPD markers were used to evaluate the genetic variability and structure of seven morphologically defined landraces of pejibaye (Bactris gasipaes Kunth, Palmae) to determine their validity and phylogenetic relationships. Two hundred and twenty plants of four Amazonian and three Central American landraces of var. gasipaes (the domesticate) and 30 plants of var. chichagui (H. Karsten) Henderson (the crop ancestor) maintained at the National Research Institute for Amazonia, Manaus, Amazonas, Brazil, were utilized. Eight RAPD primers yielded 113 markers, with good reproducibility, of which 97 were polymorphic. The four Amazonian landraces had an average heterozygosity of 0.30, with 86% polymorphism, greater than the Central American landraces (0.25; 74.3%) and var. chichagui (0.

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Section: Introductionmentioning

confidence: 99%

Molecular marker-mediated validation of morphologically defined landraces of Pejibaye (Bactris gasipaes) and their phylogenetic relationships

Rodrigues

Filho

Clement

2005

Genet Resour Crop Evol

104

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“…One of the most elusive questions regarding the evolution of cultivated plants is the number of times a species was taken into cultivation within a domestication center (5,11). In the Near East center of domestication (the ''Fertile Crescent''), the wild ancestors of the crops upon which agriculture was founded are known (e.g., wheats, barley, pea, lentil, and chickpea) (12).…”

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confidence: 99%

Domestication of a Mesoamerican cultivated fruit tree, Spondias purpurea

Miller

Schaal

2005

Proc. Natl. Acad. Sci. U.S.A.

110

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Contemporary patterns of genetic variation in crops reflect historical processes associated with domestication, such as the geographic origin(s) of cultivated populations. Although significant progress has been made in identifying several global centers of domestication, few studies have addressed the issue of multiple origins of cultivated plant populations from different geographic regions within a domestication center. This study investigates the domestication history of jocote (Spondias purpurea), a Mesoamerican cultivated fruit tree. Sequences of the chloroplast spacer trnG-trnS were obtained for cultivated and wild S. purpurea trees, two sympatric taxa (Spondias mombin var. mombin and Spondias radlkoferi), and two outgroups (S. mombin var. globosa and Spondias testudinus). A phylogeographic approach was used and statistically significant associations of clades and geographical location were tested with a nested clade analysis. The sequences confirm that wild populations of S. purpurea are the likely progenitors of cultivated jocote trees. This study provides phylogeographic evidence of multiple domestications of this Mesoamerican cultivated fruit tree. Haplotypes detected in S. purpurea trees form two clusters, each of which includes alleles recovered in both cultivated and wild populations from distinct geographic regions. Cultivated S. purpurea populations have fewer unique trnG-trnS alleles than wild populations; however, five haplotypes were absent in the wild. The presence of unique alleles in cultivation may reflect contemporary extinction of the tropical dry forests of Mesoamerica. These data indicate that some agricultural habitats may be functioning as reservoirs of genetic variation in S. purpurea.crop origins ͉ Mesoamerica ͉ phylogeography ͉ genetic variation

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“…This explains why H. brazilensis and few other wild plant resources were relocated to artificial environments. Generally, these relocations express of a desire to secure the supply of plant products that were threatened either by climatic conditions and higher demand by the everincreasing human population (Blumler, 1992;Diamond, 2002).…”

Section: Crop Agriculture and Horticulturementioning

confidence: 99%

“…Nevertheless, resource relocation as a phase in the domestication process is generally accepted as a response to alterations in climatic conditions, distribution of food organisms and human population (Blumler 1992;Diamond 2002). This response, which may be viewed as the earliest desire to use food resource in a sustainable manner, begins with the relocation of valued organisms from their natural habitats to human-controlled environments (Kerr 1903, Zeven 1972, Ajayi and Tewe 1980Schultes 1984Schultes , 1993Onadeko and Amubode 2002;Ataga and von der Vossen, 2007;Chang et al 2009).…”

Section: Introductionmentioning

confidence: 99%