No evidence of direct contribution of adult plant stages to climate adaptation in snapdragon plants

Signatures of local adaptation have been found at all life stages in plants. Yet, the contribution later plant is rarely disentangled from influence early-life stages. Here, we investigate direct adult to climate two subspecies snapdragon plants (Antirrhinum majus), while growth conditions homogenized We compared genetic variation fitness proxies (i.e. flowering, number flowers and survival) phenotypic traits eight populations A. m. pseudomajus seven striatum, common garden experiments high low elevations. no evidence elevation both subspecies. Populations low-elevation habitats outperformed high-elevation gardens. The effects on components were similar elevation, suggesting divergent selection along elevation. Different had an effect striatum pseudomajus, that different mechanisms are play these Our findings suggest there adaptive processes potentially differ scale majus