Solanaceae Source

A global taxonomic resource for the nightshade family

Mar 5th, 2021 - Nahuel Palombo​

Next SOL Seminar Online will be presented by Nahuel Palombo on Hot questions from the Andes: tracing the origin and diversification of the locoto chile (Capsicum pubescens)

Abstract. Chile peppers (Capsicum spp.) are one of the main vegetables and spices consumed by humans. The genus comprises ca. 40 species native to tropical and temperate areas of America, including 5 cultivated species widely used all over the world. Among the domesticated species, the locoto or rocoto chile (C. pubescens) is the preferred hot chile in mid-highlands in Central-South America and it stands out because it is well adapted to low temperatures. Despite its relevance, the origin of C. pubescens has been long confusing, while knowledge of its evolution and genetic diversity is still scarce. This puzzling species is only known as a cultigen and not in the wild, where a couple of wild Andean species have been proposed as its closest allies and/or putative ancestors. In this talk, we will summarize our knowledge of the affinities and evolution of C. pubescens. Using RADseq genome-wide data from samples of its entire distribution/cultivation range in Latin America, we will present a new hypothesis on the phylogenetic relationships and genetic structure within C. pubescens. Overall, these results allow a better understanding of the affinities and distribution of the genetic diversity of the locoto chile, offering new ideas (and new questions) about its center of origin and diversification. This knowledge would be helpful for the use and conservation of this important species.

When? Friday 5th March 3 pm (GMT+1)

The zoom link to join the meeting is Meeting ID: 943 3314 6166, password: Solanaceae

Watch this talk here:


Friday, March 5, 2021 - 15:00
Wed, 2021-03-03 19:21 -- rocio

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Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith