Development of intergeneric hybrids between wind orchids (Sedirea japonica and Neofinetia falcata) and moth orchids (Phalaenopsis alliances)

Abstract

To develop a new type of orchid with low-temperature tolerance and good fragrance, we generated intergeneric crosses between Korea-native wind orchids and tropical Phalaenopsis. In 2009, 160 cross combinations were made among Sedirea japonica, Phalaenopsis, Doritaenopsis and Neofinetia falcata. High incompatibility was observed from most of crosses as evidenced by traits such as early dropping of seed pods after pod formation or no seed formation after pod maturation. A total of 528 hybrid seedlings were obtained from 12 cross combinations. From these hybrid plants, several lines were selected based on flower type, inflorescence, cold tolerance, and fragrance, and finally the three best lines were selected. The selected lines were generally intermediate in both phenotype and genetic characters of the two parents, but tended to be more similar to Phalaenopsis.