Development of an interspecific hybrid between Hydrangea arborescens ‘Magical Pinkerbell’ and H. quercifolia JNHQ01

Interspecific hybridization in Hydrangea is used to increase genetic diversity and mix various traits for the development of cultivars. known have post-fertilization barriers after fertilization, as growth ovary confirmed interspecies crossbreeding, this can be overcome with embryo culture. In experiment, interspecific (H. arborescens × H. quercifolia) was achieved by ovule culture develop a plant that serve bridge crossing. Hybridization using SSR markers. As result, 10 hybrid plants were obtained 483 embryos cultured. These similar quercifolia stem shape, but leaf shape not either maternal arborescens) or paternal quercifolia). Thus, new type arose. Notably, only 2 had flowers both pistil stamens structurally, although pollen germination rate 0%. The inflorescence lacecap, while one mophead con-head type, respectively. novel hybrids from genetically remote species will useful resources breeding.