Phenotypic variation of life-history traits in native, invasive, and landrace populations of Brassica tournefortii.

ABSTRACT: Varying environments can result in different patterns of adaptive phenotypes. By performing a common greenhouse experiment, we identified phenotypic differentiation on phenology, leaf morphology, branch architecture, size, and reproduction, among native, invasive, and landrace ranges of Brassica tournefortii. We first compared trait means and fitness functions among ranges, then we analyzed how trait means and selection strength of populations respond to varying aridity. Most traits varied such that landrace > invasive > native. Excluding reproduction, which was positively selected, most trait PCs experienced nonlinear selection in the native range but frequently shifted to directional selection in invasive and/or landrace ranges. The absence of strong clines for trait means in land

SUBMITTER: Alfaro B 

PROVIDER: S-EPMC6912919 | biostudies-literature | 2019 Dec

REPOSITORIES: biostudies-literature