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当前世界各国的杨树人工林中欧美杨占有重要位置。到目前为止,我国栽培的欧美杨品种全部从欧洲引进。为此,从1979年起,用速生的鲁克斯杨(I-69/55)为母本,以抗寒、窄冠的欧洲黑杨及其变种为父本,经过杂交、选择和无性系测试林的比较,选出了中保28、中保115和中保95三个欧美杨优良无性系。共同具有速生、优质、抗性强的特点:主干通直、圆满、侧枝细、顶端优势明显、易于繁殖;木材气干密度和基本密度都高于本地推广良种I-214(母本因气候条件不适而死亡),平均材积超过I—214杨 52.2—33.5％;其遗传增益分别为38.6％、31.1％和24.8％;耐寒性高于母本,对病虫害尤其对溃疡病有高度抗性。为我国培育了第一代欧美杨新无性系。现已在河南、山东、山西等地进行区域化试验。
Currently poplar plantations in various countries of the world occupy an important position in Europe and the United States. So far, all cultivars of European and American poplars in China have been imported from Europe. To this end, since 1979, using the fast-growing Luks Yang (I-69/55) as the female parent, cold-blooded, narrow-crowned Populus nigra and its variants as the male parent, after crossing, selection and clonal Test forest comparison, selected the PICC 28, PICC 115 and PICC 95 three European and American poplar clones. Common with fast-growing, high-quality, strong resistance characteristics: trunk straight, successful, fine side branches, the top obvious advantages, easy to breed; wood air dry density and basic density are higher than the local promotion of fine varieties I-214 (mother due to climatic conditions The average volume exceeded 52.2-33.5% of I-214; the genetic gain was 38.6%, 31.1% and 24.8% respectively; the cold tolerance was higher than that of the female parent, and was highly resistant to pests and diseases, especially to canker. For our country to cultivate the first generation of European and American poplar clones. Now in Henan, Shandong, Shanxi and other places for regionalization test.