Five chili species domesticated in the Americas; C. annuum likely domesticated in several regions

The Spicy History of the Chili Pepper
Source: The Spicy History of the Chili Pepper by Ancient Americas

Five species were domesticated in the Americas: C. pubescens, C. baccatum, C. frutescens, C. chinense and C. annuum. Proto-Otomanguean likely had a word 'ki' for chili ~6,500 years ago, and wild annuum closest to domestic forms lives in northeastern Mexico — pointing to multiple domestications 🌶️

Key facts

  • Five species were domesticated in the Americas: Capsicum pubescens, C. baccatum, C. frutescens, C. chinense and C. annuum, grouped in the annuum, baccatum and pubescens clades.
  • Capsicum pubescens (rocoto, from Quechua) has fuzzy stems and leaves, purple flowers and black seeds, ranges from 30,000 to 100,000 Scoville units, grows above 1,200 m, and its wild ancestor has never been identified and may be extinct; it was cultivated and consumed 4,000 years ago.
  • Capsicum baccatum (aji amarillo, lemon drop) is the most commonly grown pepper in South America; its origin is placed in the Bolivian lowlands and valleys of Peru, with domestication around 2000 BCE, likely by Arawak or Guarani populations.
  • Capsicum frutescens includes the Tabasco pepper; C. chinense (a name that is a misnomer) includes Scotch bonnet and habanero; C. annuum includes bell, jalapeno, Anaheim, cayenne and poblano.
  • Genetic studies show that wild C. annuum varieties most genetically similar to domesticated ones inhabit northeastern Mexico.
  • Linguistic analysis of reconstructed Mesoamerican proto-languages suggests Proto-Otomanguean probably had a word 'ki' for chili pepper dating back 6,500 years; the next oldest reconstructed words in other proto-languages are more than 3,500 years younger.
  • Given the wild range and the climate 6,000 years ago, candidate domestication areas are the western and eastern coasts of Mexico, southeastern Mexico and northern Guatemala; more recent studies point to the Yucatan Peninsula and the coast of Guerrero as areas with stable Holocene environments favorable to wild C. annuum.
  • The combined evidence indicates C. annuum was domesticated independently in multiple areas by different peoples, with east-central Mexico and the Yucatan as strong candidates, superseding older single-origin single-event theories.

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Sources

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Capsicum annuumen.wikipedia.org
It is one of the oldest cultivated crops, with domestication dating back to around 6,000. The genus Capsicum has over 30 species but Capsicum annuum is the ...
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