A new collection of wild populations of Capsicum in Mexico and the southern United States

Kraft, Kraig H.; Luna‐Ruíz, José de Jesús; Gepts, Paul

doi:10.1007/s10722-012-9827-5

Cited by 24 publications

(19 citation statements)

References 20 publications

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“…), or columnar cacti. As one moves further southwards, wild chili pepper is found more frequently in human-disturbed landscapes-fence rows, home gardens, and roadsides (29). Based on our own collecting localities and those of herbarium specimens and gene bank accessions (29), we estimate that wild chili peppers grow currently in environments with a median annual average temperature of 24°C and between 20°C and 26°C for 90% of the locations.…”

Section: Resultsmentioning

confidence: 99%

“…During the fall of 2006 and 2007, expeditions were conducted in the southern United States and throughout Mexico to sample populations of wild C. annuum (29). This provided the most complete set of wild C. annuum from Mexico available to date.…”

Section: Resultsmentioning

confidence: 99%

“…The wild populations included in this study constitute the largest and most widespread sample used in genetic analyses for this species (29). However, we do not know to what extent the distribution and genetic structure of these populations have changed over the past 6,000 y.…”

Section: Discussionmentioning

confidence: 99%

“…1B). Locations where wild Capsicum populations currently occur were from collections made in the fall of 2006 and 2007 (Dataset S2, Coordinates_w_SSR info) (29) and from additional records obtained from the Global Biodiversity Information Facility (GBIF) (Dataset S3, Coordinates GBIF). We used the SDM algorithm MaxEnt (19) to predict suitability during the midHolocene according to nine global climate models (SI Materials and Materials).…”

Section: Methodsmentioning

confidence: 99%

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Multiple lines of evidence for the origin of domesticated chili pepper,Capsicum annuum, in Mexico

Kraft

Brown

Nabhan

et al. 2014

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

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The study of crop origins has traditionally involved identifying geographic areas of high morphological diversity, sampling populations of wild progenitor species, and the archaeological retrieval of macroremains. Recent investigations have added identification of plant microremains (phytoliths, pollen, and starch grains), biochemical and molecular genetic approaches, and dating through 14 C accelerator mass spectrometry. We investigate the origin of domesticated chili pepper, Capsicum annuum, by combining two approaches, species distribution modeling and paleobiolinguistics, with microsatellite genetic data and archaeobotanical data. The combination of these four lines of evidence yields consensus models indicating that domestication of C. annuum could have occurred in one or both of two areas of Mexico: northeastern Mexico and central-east Mexico. Genetic evidence shows more support for the more northern location, but jointly all four lines of evidence support central-east Mexico, where preceramic macroremains of chili pepper have been recovered in the Valley of Tehuacán. Located just to the east of this valley is the center of phylogenetic diversity of Proto-Otomanguean, a language spoken in mid-Holocene times and the oldest protolanguage for which a word for chili pepper reconstructs based on historical linguistics. For many crops, especially those that do not have a strong archaeobotanical record or phylogeographic pattern, it is difficult to precisely identify the time and place of their origin. Our results for chili pepper show that expressing all data in similar distance terms allows for combining contrasting lines of evidence and locating the region(s) where cultivation and domestication of a crop began.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Multiple lines of evidence for the origin of domesticated chili pepper,Capsicum annuum, in Mexico

Kraft

Brown

Nabhan

et al. 2014

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

Self Cite

241

155

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“…However, Kraft et al . [17] reported that some accessions were a different phenotype although collected in Baja California Sur. Generally speaking, these accessions collected were morphometrically similar (with similar cultural use, but not commercialized in any significant manner) to those found in Sonora and Arizona ( C. annuum var.…”

Section: Introductionmentioning

confidence: 99%

Baseline study of morphometric traits of wild Capsicum annuum growing near two biosphere reserves in the Peninsula of Baja California for future conservation management

et al. 2015

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BackgroundDespite the ecological and socioeconomic importance of wild Capsicum annuum L., few investigations have been carried out to study basic characteristics. The peninsula of Baja California has a unique characteristic that it provides a high degree of isolation for the development of unique highly diverse endemic populations. The objective of this study was to evaluate for the first time the growth type, associated vegetation, morphometric traits in plants, in fruits and mineral content of roots, stems and leaves of three wild populations of Capsicum in Baja California, Mexico, near biosphere reserves.ResultsThe results showed that the majority of plants of wild Capsicum annuum have a shrub growth type and were associated with communities consisting of 43 species of 20 families the most representative being Fabaceae, Cactaceae and Euphorbiaceae. Significant differences between populations were found in plant height, main stem diameter, beginning of canopy, leaf area, leaf average and maximum width, stems and roots dry weights. Coverage, leaf length and dry weight did not show differences. Potassium, sodium and zinc showed significant differences between populations in their roots, stems and leaves, while magnesium and manganese showed significant differences only in roots and stems, iron in stems and leaves, calcium in roots and leaves and phosphorus did not show differences. Average fruit weight, length, 100 fruits dry weight, 100 fruits pulp dry weight and pulp/seeds ratio showed significant differences between populations, while fruit number, average fruit fresh weight, peduncle length, fruit width, seeds per fruit and seed dry weight, did not show differences.ConclusionsWe concluded that this study of traits of wild Capsicum, provides useful information of morphometric variation between wild populations that will be of value for future decision processes involved in the management and preservation of germplasm and genetic resources.

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Chile Peppers (Capsicum spp.)

Pickersgill

2016

Ethnobiology

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A new collection of wild populations of Capsicum in Mexico and the southern United States

Cited by 24 publications

References 20 publications

Multiple lines of evidence for the origin of domesticated chili pepper,Capsicum annuum, in Mexico

Multiple lines of evidence for the origin of domesticated chili pepper,Capsicum annuum, in Mexico

Baseline study of morphometric traits of wild Capsicum annuum growing near two biosphere reserves in the Peninsula of Baja California for future conservation management

Chile Peppers (Capsicum spp.)

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