Abstract Detail

Population Genetics/Genomics

Mabry, Makenzie [1], Pires, Joseph [2].

The Evolutionary History of Wild and Domesticated Brassica oleracea (Brassicaceae).

Brassica oleracea is an important crop species that has intrigued researchers for centuries. When first introduced to the species, Darwin drew many parallels between his theory on natural selection and the domestication practices that led to the varied forms of this plant. Brassica oleracea is unique in that it has been domesticated into several spectacularly different crop types, including broccoli, Brussels sprouts, cabbage, kale, cauliflower and kohlrabi, as well as several lesser well-known types, such as walking stick kale and marrow cabbage. However, over a century and a half after Darwin, we still know very little about the origins of this crop species. To date, the wild progenitor(s) and geographic origin have remained uncertain, with conflicting hypotheses supporting either a Sicilian or an English origin.  Using a diversity panel of 224 accessions representing 19 different Brasssica oleracea crop types and eight potential wild progenitor species, we integrate phylogenetic and population genetic techniques to examine patterns of relationships among cultivars and wild relatives. These analyses point to new hypotheses for the closest living relative of Brassica oleracea and for the location and timing of early domestication. Understanding the evolutionary history of crops, including identifying crop wild relatives, may point to new approaches for future crop breeding efforts, especially in light of climate change.

1 - University Of Missouri, Biological Sciences, 1201 Rollins St., Columbia, MO, 65201, United States
2 - University Of Missouri, 371 Bond Life Sciences Center, 1201 Rollins Street, Columbia, MO, 65211, United States

crop wild relatives

Presentation Type: Oral Paper
Session: POPGEN3, Population Genetics/Genomics III
Location: Virtual/Virtual
Date: Friday, July 31st, 2020
Time: 11:00 AM
Number: POPGEN3005
Abstract ID:806
Candidate for Awards:None

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