A Systematic Approach to Species-Level Identification of Chile Pepper (Capsicum spp.) Seeds: Establishing the Groundwork for Tracking the Domestication and Movement of Chile Peppers through the Americas and Beyond

The chile pepper (Capsicum spp.), a plant held in great esteem throughout history, was independently domesticated in a series of places including highland Bolivia, central Mexico, the Amazon, the Caribbean, and other locales with a particularly long history of cultivation and use in the central Andes of South America. Though identification of chile pepper species through fruit morphology is possible and has been utilized by botanists studying modern and archaeological specimens, species-level identification of Capsicum seeds has remained undetermined. Given the greater abundance of seed remains in the archaeological record due to the higher likelihood of preservation, the ability to identify specific Capsicum domesticates has profound implications for tracking the domestication and spread of chile peppers prehistorically through the Americas and historically through trade and exchange to the rest of the world. This article presents a systematic procedure to identify Capsicum seeds to the species level created by adopting a morphometric approach to compare attributes of modem Capsicum seeds to archaeological seeds. El chile/ají (Capsicum spp. L), una planta que goza de gran estima a lo largo de la historia de la humanidad, fue domesticado independientemente en una serie de diferentes lugares, incluyendo el altiplano boliviano, México central, la Amazonia y el Caribe. Aunque hoy en día es possible la identificación de diferentes especies de chile/ají a través de la morfología de la fruta, la identificación utilizando solamente la semilla permanece una tarea difícil. Dada la gran abundancia de semillas en el registro arqueológico, el desarollo de esta habilidad tiene profundas implicaciones para el estudio de la domesticación y difusión de chile/ají en las America precolombina y el resto del mundo. El presente artículo propone un procedimiento sistemático para identificar especies de Capsicum adoptando un acercamiento morfométrico para comparer las semillas modernas con restos arqueológicos.