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University of New Mexico (2021)

Global population divergence of a cosmopolian desert plant - Sahara mustard (Brassica tournefortii)

Alfaro, Victor Ryan

Titre : Global population divergence of a cosmopolian desert plant - Sahara mustard (Brassica tournefortii)

Auteur : Alfaro, Victor Ryan

Université de soutenance : University of New Mexico

Grade : Doctor of Philosophy (PhD) 2021

Résumé
Genetic and phenotypic variation can have different patterns within a species if it has populations with contrasting histories. Populations can have discrete differences that are shaped by different evolutionary scenarios, but within each population, range, or region, traits and association with fitness can also be affected by both edaphic and landscape variation. For my dissertation, I surveyed and experimentally analyzed variation and adaptive potential in Sahara mustard (Brassica tournefortii), a desert annual that has endemic, invasive, and agricultural populations in Africa, Asia, and the Americas. Although my multi-trait analysis generated complex results, my findings can be applied to other Brassica that have both wild and agricultural populations. B. tournefortii has both adaptive and maladaptive evolutionary potential that can be harnessed for conservation, invasive species control, and crop development.

Mots clés : clinal variation, crop evolution, phenotyping, plasticity

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Page publiée le 12 décembre 2022