Investigation On Resources Of Osmanthus Fragrans Cultivars In Anhui Province And Studies On Application

This research is a part of the subject of the Application to International Registration Authority of Osmanthus fragrans Cultivars. Osmanthus fragrans is inhered in China , and which has long cultivation, wide distribution, lots of cultivars resources, abundant experiences of cultivation, is one of Chinese ten-traditional flowers, and is beloved by Chinese people. Surrounding with cultivar classification and development and application of Osmanthus fragrans , the main study are launched as follows: Investigation on cultivars resources and ancient trees resources in Anhui province, two years studies on biology characters of each cultivars, stem cuttings of several cultivars.After studying each of above and achievements of precursor, the main and preliminary results are as follows:1 Studying on cultivars resources of osmanthus fragrans in anhui province , 36 cultivars are discussed and classified into four group , among them , 13 in "Leteus Group" , 10 in "Albus Group" , 8 in "Aurantiacus Group" , 5 in "Siji Group". There are 8 new cultivars among all cultivars. Each group is formulated a classification system of cultivars , and characters of each cultivars are described.2 In history, ancient trees of Osmanthus fragrans are our valuable wealth. After centuries influence , ancient trees of Osmanthus fragrans become not only the most valuable resource in human history landscape , but also in forest ecology, environment conservation and inherent genus. After investigation on ancient trees of Osmanthus fragrans , the suggestions which these resources should be protected and taken good advantage of are putted forward.3 In order to keep flowering landscape balance in sweet osmanthus garden , and also keep planting numbers of best-looking states suitable, after two years studies on characters of each cultivar, basing on flowering stage and then the early, middle, terminal, interval cultivars are chosen, preliminary ratios are 3.5:3:3:0.5. In sweet osmanthus garden, increasing early, terminal cultivars suitable, and a little interval cultivars, as a result, which can improve viewing and admiring effect when flowering stages of all autumn division cultivars have a break.4 Using four cultivars, Osmanthus fragrans 'Jinshigui' , O. fragrans 'Zaozi Yingui' ,O.fragrans'Zhusha Dangui' ,O. fragrans 'Dahuafodingzhu', as test materials, the effects of survival rate of the seedling of them at different concentrations were investigated in different seasons;. The result showed that: among four cultivars , the survival rate of the seedling of O. fragrans 'Dahuafodingzhu' was the highest one ; the survival rate of the seedling of those stem cuttings , treated with IAA, were best of all, and 100mg/L is better than 50mg/L in the stem cuttings, at last , it pointed out that summer was optimum season.Finally, the questions in the application in Anhui province are summarized , suggestions to make progress in the development and application of Osmanthus fragrans are offered in this paper.