The underlying genetic causes of the switch to apomixes are not yet fully understood, but in Hypericum there is good evidence for the existence of ‘apomictic factors’.
Tag - Hypericum perforatum
botanyone
Reproduction and invasiveness in St. John’s wort
Invasiveness is not correlated with the genome variability and reproductive variability that characterize St. John's wort.
AJ Cann
Merging gene pools in Hypericum perforatum
Analysis of extensive field collections demonstrates that H. perforatum is not of hybrid origin, and for the first time, documents wild diploid populations.
