유향성 황색계 호접란 육성 및 전자코를 이용한 향기패턴 분석

In order to improve the consumer acceptance of fragrant yellow hybrids of Phalaenopsis (Phal.), crosses between yellow hybrid varieties were made and the obtained hybrids were investigated for horticultural characteristics as well as difference in fragrance patterns. Cross combination of Phal. Brother lawrence and Phal. Brother saragold yielded good seedling population of 500 plants. Segregation was noticed in color density, spot and stripe patterns on yellow color base of petal and also in fragrance. Six lines with multi-branch on flower stalk and strong fragrance flower were finally selected. Volatile fragrance components were compared among Phal. Brother lawrence, Phal. Brother saragold and their hybrids by GC/SAW electronic nose. In the derivative pattern of chromatogram and polar derivative pattern of fragrance, similar dominant peaks appeared on retention time 7-9 s and some hybrid lines had two strong peaks on retention time 20-25 s, respectively. Also in polar frequency pattern of fragrance obtained by VaporPrintTM image analysis among parent flowers and hybrids, an identical strong peak near 8 s of retention time was shown. This single fragrance component is considered a key element of fragrance in Phal. Brother lawrence, Phal. Brother saragold and their hybrids. This peak could be used as a marker for the breeding of fragrance in Phalaenopsis.