油桐33个家系的因子分析与选优研究

Factor Analysis and Optimization of 33 Clones of Aleurites fordill

选自浙江省各油桐产区的33个油桐优良单株单产子代在金华试验点的生长表现，按树体、结实和经济成份等性状的14个因子，采用多元分析方法，将33个家系的因子得分作展点图排序，共排为5类。研究结果表明，以16号、33号家系为代表的第Ⅴ类是高产稳产的优良家系；同时对5类家系的主要性状特点进行研究。这种用因子分析法按油桐的树体和结实等性状来间接选择优良家系的方法，可靠性大且效率较高。

33 coines of Aleurites fordill, selected from the various producing areas in Zhejiang, were planted in the experimental field in Jinhua. In this paper, their growth performances were described by 14 factors such as trunk bearing and economic component. By multivariate analysis and ordination, the clones were divided into 5 types. The result was showed that, type V was high and stableyield. Mean while, the main performance properties of these types were studied. The method to select indirectly excellent clone by factor analysis was considerably dependable and efficient.