摘要
[Objective] The aim was to explore growth performance of Phoebe bournei in seedling stage.[Method] Based on 17 superior plus trees of Phoebe bournei,a seedling cultivation test was conducted in Jindong Forest Farm in Yongzhou,Hunan Province,exploring growth indices and analyzing seedling height and ground diameter.[Result] As per the selection rate at 20％,PB17,PB9 and PB12 were selected from the 17 species.Specifically,the seedling height averaged 36.52 cm of the selected three seedlings,which was higher by 16.1％ compared with average of 17 species （31.45％）.As for ground diameter,the selected species averaged 2.6 mm,which was higher （13.0％） compared with the average level （2.3 mm）.[Conclusion]Both of seedling height and ground diameter reached extremely significant differences,which indicated that half-sib families of Phoebe bournei have rich variations,with selection and breeding potential.
[目的]研究闽楠优树子代苗期生长表现。[方法]以湖南省17个闽楠优树子代一年生苗为研究对象,在湖南省永州市金洞林场进行育苗试验,对苗期生长指标进行调查,并对苗高、地径等性状进行统计分析。[结果]按20%的入选率,筛选出了苗期生长相对较快的闽楠家系3个:PB17、PB9、PB12。入选3个闽楠家系平均苗高为36.52 cm,比本次参试的17个家系平均苗高(31.45 cm)高16.1%,3个闽楠优良家系平均地径为2.6 mm,比本次参试的17个家系平均地径(2.3 mm)高13.0%。[结果]家系间苗高、地径等性状均达极显著差异,说明闽楠半同胞家系间存在较为丰富的变异,具选育潜力。
基金
Supported by Hunan Forestry Scientific Research(2010-07)~~
