摘要
对11个黑杨无性系的8个物候期进行了观测分析。结果表明,不同无性系的物候期有较大的差异,极差为24d,各无性系间的差异主要表现在物候期后期,用主分量分析法将11个无性系分为物候期特点各异的3类。生长后期诸物候期的早晚可作为速生无性系早期选择的参考依据。
Eight phenological phases of 11 poplar clones were observed. The result indicated that there was much different in the phenological phases. The maximum was 24 day, and differences of growth rate among clones produced mainly at the late growth stage. The poplar clones were divided 3 types by analzing main components. The different stages at the later phenological phases could be as a reference for early selection of poplar clones.
出处
《西北林学院学报》
CSCD
北大核心
2003年第3期40-42,共3页
Journal of Northwest Forestry University
基金
山东省科技厅三Ο工程资助项目
