幼龄福建柏种源生长性状的遗传变异和种源选择

在福建南靖和三明试验点，对来自福建、湖南、江西、贵州、广东和浙江6省的11个福建柏种源进行种源试验。通过对5年生试验林的调查和观测分析发现，福建柏种内存在丰富的遗传变异，福建柏树高、胸径、地径、材积生长在种源间的差异达到显著或极显著的水平，这些性状具有中等以上的遗传力，其变异主要受遗传因素控制。福建柏种源问可能存在随机变异，种源生长的好坏与种源所在地的地理、气候因子间相关不密切。在变异分析的基础上，对参试种源进行选择，从南靖点种源试验林中选出江西上犹、福建龙岩和贵州黎平等3个优良种源、Nz001等14个优良个体，从三明点种源试验林中选出湖南道县和贵州黎平等2个优良种源、Sz001等14个优良个体。这些遗传材料，可用作无性繁殖的母株、种子园的建园材料或杂交亲本。

Genetic Variations of Growth Traits Selection Among Provenances of Fokienia hodginsii at Juvenile Stage

The provenance tests on 11 provenances of Foleienia hodginsii selected from provinces of Fujian,Hunan,Jiangxi,Guizhou,Guangdong and Zhejiang were carried out at Nanjing and Sanming, Fujian. The genetic variations of F. hodginsii were studied based on the investigation of 5-year-old provenance progeny trials. The results showed that there were abundant variations within F. hodginsii and significant or very significant differences among provenances in growth traits such as tree height, diameter at breast height, basal diameter and stem volume. The variations were mainly controlled by genetic factors and the traits had moderate or high heritabilities. The genetic variation pattern on the species of F. hodginsii might be random geographic variation and the correlations between growth traits and geographic and climatic factors in original regions of provenances were not obvious. Based on vagriance analyses,some superior provenances and individuals were selected. At Nanjing provenance trial, 3 superior provenances were Shangyou, Longyan and Liping and 14 superior individuals were Nz001 etc.. At Sanming provenance trial,2 superior provenances were Daoxian and Liping and 14 superior individuals were Sz001 etc.. These superior provenances and individuals could be used for vegetative propagation, seed orchard establishing and parents for hybridization. This research also provided a good base for up coming studies and utilization for F. hodginsii.