For centuries, freesia has been one of the most important crops in the floriculture industry. Here, aqua-space samples collected from entire flowers of diploid Freesia refracta, three tetrapioid freesia cuitivars, and interspecific hybrids of three tetraploid freesia cultivars were analyzed using gas chromatograph coupled with mass selective detector, in all, 75 different compounds were identified. The compounds were mainly terpenes, hydrocarbons, alcohols, fatty acid esters and aromatic class compounds. Among these, iinalool was detected from all the sweet-scented flowers except for scentless white tetraploid F. hybrida. Stable inheritance of linalool between F. hybrida and their Ft progeny was observed. Based on the present analyses, the relationship between the aroma of freesia and iinalooi was discussed.
Yang Fu Xiang Gao Yiqun Xue Yuejun Hui Fengqing Chen Quanping Su Li Wang
Using the young inflorescence segments of Freesia refracta as explants, indirect somatic embryogenesis of somatic cells was induced in a N6 medium supplemented with some exogenous hormones. SDS-polyacrylamide gel electrophoresis（SDS-PAGE） was used for the analysis of soluble proteins produced during the somatic embryogenesis of this plant. There are six polypeptides, which might play some roles in the process of somatic embryo development. Tltree polypeptides（45, 53 and 55 kD） were detected in the stages of embryogenic callus, globular embryoid, and embryoid with coleoptiles, except the embryoid with leaf. One polypeptide（ 83 kD） was specific for the stages of embryoid with eoleoptiles and embryoid with leaf. One polypeptide（37 kD） was detected in the first two stages, namely, embryogenic callus and globular embryoid. One polypeptide（35 kD） was regularly synthesized in each stage, from embryogenic callus to embryoid with leaf.
GAO XiangHUI Yue-junXUE Yi-qunFU YangAO ManWANG Li
