Sibling competition does not magnify inbreeding depression in North American Arabidopsis lyrata

摘要

Experimental design. Crossed- and selfed plants from six outcrossing and six selfing populations of A. lyrata were grown alone (no competition) or in competition with each other (competition). All crossed plants were raised from seeds produced by cross-pollination under ambient conditions (cross), and selfed plants were raised from seeds produced by self-pollination under CO2-enriched environment (self [CO2]) or under ambient conditions (self [amb]). Actual sample sizes are indicated below each pot. Numbers in brackets indicate the planned sample size based on seed availability, which was not achieved, mainly because not all seeds germinated