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杨树是我国主要造林树种,黑龙江省嫩江地区林科所于1960年开展了杨树良种选育工作。根据该区干旱寒冷的自然条件,以培育抗寒、抗旱、抗病虫害的速生品种为目标,曾先后引进200多个杨树品种,已相继开花结实。在对这些原始材料特征、特性研究的基础上,1971年采用室内水培杂交方法,又开展了有性杂交育种。十几年来,我们体会到除了加强杂交苗木繁殖,选择优良单株及类型外,还必须研究杂交育种的遗传规律,以便利用这些遗传特性和规律,有计划、有目标地培育我们所需要的优良杨树品种,可
Poplar is one of the main afforestation species in China. The Linke Institute of Nenjiang in Heilongjiang Province carried out poplar breeding in 1960. According to the arid and cold natural conditions in this area, with the goal of cultivating fast-growing varieties with cold resistance, drought resistance and pest resistance, over 200 poplar varieties have successively been introduced, which have successively blossomed. Based on the study of the characteristics and characteristics of these raw materials, indoor hybridization breeding was conducted in 1971 and sexual cross breeding was carried out. Over the past decade or so, we have realized that in addition to strengthening the breeding of hybrid seedlings and selecting the best individuals and types, we must also study the genetic laws of hybrid breeding to take advantage of these genetic traits and laws to plan and target the fine we need Poplar varieties, can