Why is reproductive isolation between intraspecific cytotypes so important? A commentary on: 'Strong post-pollination interactions govern cytotype isolation in a tetraploid-octoploid contact zone'

This article comments on: Mariana Castro1, João Loureiro, Brian C. Husband and Sílvia Castro, The role of multiple reproductive barriers: strong post-pollination interactions govern cytotype isolation in a tetraploid–octoploid contact zone, Annals of Botany, Volume 126, Issue 6, 2 November 2020, Pages 991–1003, https://doi.org/10.1093/aob/mcaa084