樟树无性系生长与形质性状早期分析

对2012和2013年种植在广东省河源市紫金县的2片樟树（Cinnamomum camphora）无性系林进行调查分析，结果表明，参试无性系保存率达93％以上，不同无性系间树高、地径、冠幅和干形4个性状均存在极显著差异，生长与形质性状的重复力较高，为0．8077-0．9354；树高、地径和冠幅3个生长性状之间极显著相关，但干形与生长指标的相关度随林龄增加呈降低的趋势。建议今后开展樟树无性系选择时应兼顾生长和形质两方面的性状。

Early Analyses on Growth and Form Traits of Cinnamomum camphora Clones

Two experimental forests of cinnamomum camphora clones were planted in Zijin county,Guang-dong province in 2012 and 2013.The growth traits,including height and ground diameter,and form traits ,inclu-ding canopy and stem straightness were measured.The results showed that the survival rate reached above 93%. Significant differences of 4 observed traits were found among different clones.All the traits had a high repeatability level （0.807 7-0.935 4）.There were significant correlation among height,ground diameter and canopy,but the correlation between stem straightness and height,ground diameter or canopy,showed a trend of decrease along with the increase of forest age.In order to improve the efficiency of clone selection,it should be necessary to focus on the growth and form traits at the same time when selecting super clones.