西南林业大学学报2018，Vol.38Issue(3)：80-86,7.DOI:10.11929/j.issn.2095-1914.2018.03.012
8种美洲黑杨无性系抗寒性评价
Evaluation of Cold Resistance of 8 Populus deltoids Clones
摘要
Abstract
In order to study the cold resistance mechanism of Poplar, taking annual dormancy branches of 5 clones and 3 control clones as experimental materials. Physiological indexes were measured after stress treatment at-15, -20, -25, -30 and -35℃ for 24 h, and the cold resistance of 8 species of Populus deltoids clones was quantitatively evaluated by membership function method. Results showed that LT50, SOD activity, POD activity, soluble protein content and mass concentration of MDA can be used to quantitatively evaluate the cold resistance of 8 tested clones. There were obvious differences among the clones of the ability of cold resistance. The cold resist-ance of 8 species of Poplar deltoids clones from strong to weak was Nankangyang,'08H1-6','03S4-1','08H11-11', Shanlin No.3, '08H2-16', 69 Yang, '08H4-5'. The cold resistance of '08H1-6', '03S4-1' and'08H11-11' were between Nankangyang and Shanlin No.3,which can provide reference for the popularization of new varieties with excellent cold resistance.关键词
美洲黑杨/无性系/抗寒性/酶活性/评价方法Key words
Populus deltoids/clones/cold resistance/enzyme activity/evaluation method分类
农业科技引用本文复制引用
田星,樊军锋,张锦梅..8种美洲黑杨无性系抗寒性评价[J].西南林业大学学报,2018,38(3):80-86,7.基金项目
国家林业局林业公益性行业科研专项(201404113)资助. （201404113）
