Analysis of unidirectional hybridization between supra-annual flowering species, Strobilanthes glandulifera, and annual flowering species, S.tashiroi

本文从生态、形态和遗传学等方面对冲绳岛莫托布半岛的百里香、柔茎百里香及其可能的杂交种的现状进行了观察和研究。在生态学上，墨托布半岛的多果性多年生花卉和多年生多果性多年生花卉和多果性花卉分别是单果和周期性的大开花种类。推定的杂交种，包括F1，F2…随后的回交世代也被证实是由塔什罗和柔枝莲杂交产生的，后者是主要的花粉供体。由于授粉者在非大开花年份很少发现，因此推测杂交只发生在大开花年份，也就是百合花盛开的时候，因此在任何水平的杂交中，百合花都是主要的供粉者。至少在杂交种和柔枝链霉菌之间还没有建立分离。

In the Motobu Peninsula of Okinawa Island, the present situation of Strobilanthes tashiroi, S.flexicaulis and their putative hybrids are observed and examined ecologically, morphologically and genetically. Ecologically, S.tashiroi and S.flexicaulis in the Motobu Peninsula are confirmed to be polycarpic perennial and monocarpic and periodical mass-flowering species, respectively. The putative hybrids, including F1, F2…and following back-cross generations are also confirmed to derive from hybridization between S.tashiroi and S.flexicaulis with the latter species as major pollen donor. As the pollinators were scarcely found in non-mass-flowering years, it is deduced that hybridization occurs only in the mass-flowering years when the flowers of S. flexicaulis are overwhelming so that the S.flexicaulis acts as major pollen donor in any level of hybridization. Isolation has not been established at least between the hybrids and S.flexicaulis.