北京八达岭国家森林公园观赏型文冠果观花优树选择研究

Research on Optimal Selection Methods of Ornamental Xanthoceras Sorbifolia Bunge in Beijing Badaling National Forest Park

以观赏型文冠果为研究对象,利用3年的时间,通过花期物候观测、生长状况调查等方法,重点从花色、花期、花香等方面进行选优,以得到观赏价值较高的文冠果观花优树。结果表明：八达岭国家森林公园文冠果单株花期15~20d,整个林分观花期可达30余天,具有金红、白雪、泛阳3个花系、3种花色和6个观赏类型。通过观测研究共选出15株观花优树,作为良种快速繁育采条、嫁接、组培的优良种质树,为观赏型文冠果良种繁育与推广做好良种资源贮备。

Xanthoceras Sorbifolia Bunge tree is a new and promising ornamental plant which is featuringits highly ornamental aesthetic values with beautiful gestures, leaves and blossoms, gorgeous colors andrelatively long flowering time. In the paper, the author took ornamental Xanthoceras Sorbifolia Bunge treeas the study objective, with 3 years, through methods such as flowering phenology observation and growthstatus survey and so on, optimally selected the aspects of flowering color, flowering period and floweringfragrance, etc. and got those excellent germplasm tree of ornamental flowers with highly ornamental val-ue. The results showed that the flowering period of superior individual plant lasted for 15 to 20 days, andthe average blossoming period for greenbelt was over 30 days in Beijing Badaling National ForestPark. There were three flower series, three colors and six ornamental types in Xanthoceras spe-cies. Through the observation a total of 15 strains of excellent germplasm tree were selected as fast thor-oughbred breeding, grafting, tissue culture ,for the purpose of Xanthoceras Sorbifolia Bunge breeding andpromotion of good resource reserves.