Notes on spatial genetic structure in a hybrid population between Aconitumjaponicum subsp napiforme and A-jaluense (Ranunculaceae)

The fine-scale genetic structure in a hybrid population (35 x 55-m area) be tween the herbaceous perennials Aconitum japonicum Thunb. ex Murray subsp. napiforme (Lev. & Vaniot) and A. jaluense Komarov (Ranunculaceae) was analy zed using spatial autocorrelation statistics. Although individuals of the p opulation have protandrous flowers, the population is highly structured. In dividual genotypes exhibited significant spatial autocorrelation on a scale of 4 m due to the limited seed and pollen dispersal, which is consistent w ith a neighborhood size of about 25. Such neighborhood sizes are about one- fourth of the entire population.