Molecular validation of the putative hybrid seeds of Chinese native and alien Sagittaria species, using ITS sequence. There are three crosses: Sagittaria trifolia X Sagittaria pla
Hybridisation and introgression can dramatically alter the relationships among groups of species, leading to phylogenetic discordance across the genome and between populations. Introgression can also
Natural hybridization is common in plants. Very often, the identity of a putative hybrid is inferred based on the observation of morphological features intermediate between two possible parental speci
Polyploidy has played an important role in angiosperm diversification, but how polyploidy contributes to reproductive isolation remains poorly understood. Most work has focused on postzygotic reprod