抗寒速生杨树新品种辽育1号、辽育2号选育的研究

Selection and breeding of new poplar varieties LiaoYu No.1 and LiaoYu No.2 of cold resistancy and fast growing

为选育出适应辽宁省北方气候条件的杨树新品种,根据育种学原理,有目的地选用亲本进行了杂交组合,经过10a的苗期选择和区域试验研究,选育出抗寒(北纬43°左右,绝对最低温度-40.0℃),并能在瘠薄的沙土、内陆轻度盐碱(pH8.0左右)土壤上正常生长发育,且对风沙和干旱具有一定抗性的F1代单株雄性无性系两个,辽育1号和辽育2号。这两个无性系在抗寒、速生、材性方面均好于当地主栽品种,可以在生产中推广应用。

To be adapting to the climatic conditions in northern of Liaoning province, paternal plants were chosen purposefully to conduct hybrid combinations for cultivation of seedlings.Through 10-year selection in seedling stage and regional experiments, 2 male clones of F1 generation individuals, namely, LiaoYu No.1 and LiaoYu No.2, which was of cold resistant (absolutely lowest temperature was -40℃) and could grow normally on barren sandy soil and inland light salinized and alkalinized (pH 8.0 approximately)soil, and was of wind-sand and drought resistancy to some extent, were selected out. As to such qualities as cold resistancy, fast growing and timber properties, these two clones were much better than the native planting species.