Studies On Investigation And Application Of The Resources Of Osmanthus And Osmanthus Fragrans Cultivars In Guangxi

This paper is a part of the subject of the Application to International Registration Authority of Osmanthus fragrans Cultivars. There are abundant Osmanthus resources in Guangxi. Osmanthus fragrans, being the region-flower of Guangxi and the city-flower of Guilin, which is one of the five well-known Osmanthus bases, has been cultivated for a long time in this area. This paper deals with the classification of the genus Osmanthus and osmanthus fragrans, the main results are summarized as follows:(1)9 species and 1 variety are recognized as Osmanthus marginatus (Champ, ex. Benth.) Hemsl., 0. matsumuranus Hayata, O. minor P. S. Green, 0. attenuatus P. S. Green, O. serrulatus Rehd., O. gracilinervis Chia ex R. L. Lu, O. reticulates P. S. Green, O. fragrans Lour., O. fordii Hemsl. in Guangxi, by a specimen consulting in IBK herbarium.(2) The distribution of Osmanthus in Guangxi is analyzed, and a distribution map is drawn.(3) According to the uniform investigation standard and classification criteria proposed by the Research Center of Osmanthus, it is acquired that there are 43 cultivars of osmanthus fragrans in Guangxi, in which, 3 in Siji Group, 21 in Albus Group, 14 in Luteus group and 5 in Arantiacus Group. Among them, 26 cultivars are described as new.(4) 4 cultivars key are given for each cultivars Group, after a contrast study of morphological characteristics.(5) The distribution of sweet Osmanthus in Guangxi is divided into 3 types, the main distribution, the common distribution and the disperse distribution. The distribution map is given too.(6) The technology of breeding and cultivating single stem Osmanthus fragrans is summarized, which can promote its industrialisation.(7) The current status about development and application of Osmanthus fragrans are commented, including landscape, perfume industry, food processing and medicine application.Finally, the resources of Osmanthus and Osmanthus fragrans were concluded, the development and application of Osmanthus fragrans are introduced, some relevant suggestion is also given in this paper.