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我院承担的科研项目《白杨有性杂交育种及优良无性系选育的研究》,经过1972—1990年18年的工作,已完成原定的研究计划,并在省林业厅主持下通过了技术鉴定。该项研究采用三交育种战略,制定了下列杂交组合:(1)〔银白杨×(山杨+小叶杨)〕×毛白杨;(2)〔银白杨×(山杨+小叶杨)〕×塔形毛白杨;(3)(毛白杨×新疆杨)×山杨。对各杂交组合获得的杂种苗,通过苗期初选、选育试验林复选和品种比较试验林评选,
Our research project “Sexual Poplar Sexual Breeding and Selection of Fine Clones” was undertaken by our institute. After 18 years of work in 1972-1990, we have completed the original research plan and adopted the technology under the auspices of the Provincial Forestry Department Identification. The study adopted the three-way breeding strategy and formulated the following hybrid combinations: (1) Populus × Populus × Populus × Populus × Populus; Populus × Populus × Populus × Populus × Populus euphratica × Tower-shaped white poplar; (3) (Populus × Xinjiang Yang) × aspen. The hybrid seedlings obtained from each cross combination were selected through seedling stage selection, selection of test forest and selection of comparative test plots,