金廿世纪梨,又名王子廿世纪,是日本农林水产省农业生物资源研究所放射线育种场。采用r射线缓慢照射廿世纪枝条诱发基因突变而成,属砂梨系统。1981年入选,1986年按系统编号为r—1—1,1990年正式命名并登记。1992年由台商引种到胶东地区,高接于莱阳茌梨成龄大树上。1993年繁育出成品苗木,在当地推广栽培。经几年观察,其综合性状的表现比在日本好,果品全部向台湾出口,有极高的商品价值。 Twentieth century, pear, also known as Prince Twentieth Century, Japan’s Agriculture, Forestry and Fisheries Institute of Agricultural Biological Radiation breeding farm. The use of r-ray slowly irradiate the 20th century-induced mutations in the branches, is a pear system. 1981 was selected in 1986, according to the system number r-1-1, 1990 formal life style list. Introduced to Taiwan by the Taiwanese in 1992 Jiaodong area, high Laiyang Pear Cheng old tree. In 1993 bred finished seedlings, in the local promotion and cultivation. After several years of observation, the performance of its comprehensive traits is better than that of Japan. All the fruits are exported to Taiwan and have a very high value of the commodities.