Solanaceae Source

A global taxonomic resource for the nightshade family

Jan 22nd, 2021 - Esther van der Knaap

Next SOL Seminar Online will be presented by Esther van der Knaap on Harnessing Crop Improvement Traits from Semi-Domesticated Tomato Accessions

Abstract. The trajectory of fruit and vegetable domestication is rarely thoroughly understood. Moreover, the selection of traits that were associated with their domestication may have differed over evolutionary time. Tomato was initially domesticated from wild relatives in Ecuador and Peru1. After that, semi-domesticated accessions traversed north to Central America and southern North America for further domestication into the varieties we know today1. Diversity studies of the subgroups show large genetic variation in certain semi-domesticated accessions, particularly from Ecuador and Peru. The genetic variation in these semi-domesticates is similar to wild accessions, contrary to highly domesticated and elite germplasm. Even though the fruits of these genetically diverse semi-domesticates are relatively small and sometimes unpalatable, we developed populations to determine the inheritance of fruit quality traits that could be used for crop improvement. We discovered novel loci for fruit weight that led to the transition from one phylogenetic subclade to another.  Moreover, we found evidence that some beneficial alleles for fruit quality may have been left behind during domestication.

When? Friday 22nd January 3 pm (GMT+1)

The zoom link to join the meeting is https://cuboulder.zoom.us/j/94333146166 Meeting ID: 943 3314 6166, password: Solanaceae

Watch again this talk here: https://youtu.be/CRaSkYzh2EI

Date: 
Friday, January 22, 2021 - 03:00
Mon, 2021-01-18 08:37 -- 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