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| 马尾松优树群体特征分析 |
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白青松,刘晚传,覃冀,潘庆优,蓝燕群,张谦,何波祥
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广东省森林培育与保护利用重点实验室/广东省林业科学研究院,信宜市林业科学研究所,信宜市林业科学研究所,信宜市林业科学研究所,广东省森林培育与保护利用重点实验室/广东省林业科学研究院,广东省森林培育与保护利用重点实验室/广东省林业科学研究院,广东省森林培育与保护利用重点实验室/广东省林业科学研究院
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| 摘要: |
| 为进一步优化马尾松无性系并选育脂-材兼用马尾松良种，以马尾松种子园的54个无性系为试验材料，测量该群体树高、胸径、产脂量并计算材积和产脂力，分析该群体特征，为构建脂-材兼用马尾松育种群体提供依据。分析结果表明，各性状群体变幅不大，无性系间和试验误差的方差分量占比相当，遗传因素和环境因素可能共同影响马尾松表型；树高、胸径、材积、产脂量、产脂力的无性系重复力较大，分别达到0.693、0.792、0.793、0.873、0.836；胸径和材积表型与产脂表型极显著相关；根据材积和产脂力选出PM1、PM6、PM9等18个脂-材兼用无性系，其材积和产脂力平均期望增益分别达到26.19%和28.79%，这些无性系有助于将来继续选育马尾松。 |
| 关键词: 马尾松、无性系、方差分析、重复力、相关性分析 |
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| Analysis on Population Characteristics of Pinus massoniana Superior Tree |
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BAI Qingsong,LIU Wanchuan,QIN Ji,PAN Qingyou,LAN Yanqun,ZHANG Qian and HE Boxiang
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Guangdong Provincial Key Laboratory of Silviculture,Protection and Utilization / Guangdong Academy of Forestry,Guangzhou,Xinyi Forestry Research Institute,Maoming,Xinyi Forestry Research Institute,Maoming,Xinyi Forestry Research Institute,Maoming,Guangdong Provincial Key Laboratory of Silviculture,Protection and Utilization / Guangdong Academy of Forestry,Guangzhou,Guangdong Provincial Key Laboratory of Silviculture,Protection and Utilization / Guangdong Academy of Forestry,Guangzhou,Guangdong Provincial Key Laboratory of Silviculture,Protection and Utilization / Guangdong Academy of Forestry,Guangzhou
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| Abstract: |
| In order to further optimize the clonal lines and select resin-wood dual-purpose lines. In this study, 54 masson pine clonal lines growing at seed orchard were used as experimental materials. Height (HT), diameter at breast height (DBH), resin yield (RY) of the those lines have been measured. Volume of wood (VW), resin-yielding capacity (RYC) have been calculated. Character analysis of those lines would provide a basis for building masson pine resin-wood dual-purpose breeding population. The results showed that there were limited changes in each trait among different lines. Variance components in clonal lines almost equaled to that in experiment error. Hence, masson pine phenotype may be influenced by both heridity and environment. Repeatability of HT, DBH, VW, RY and RYC reached to 0.693, 0.792, 0.793, 0.873, 0.836 respectively. Growth phenotypes DBH and VW were significantly correlated with resin related phenotypes. Eighteen resin-wood dual purpose lines such as PM1, PM6, PM9 have been selected according to VW and RYC. Average expected gains of these lines reached to 26.19% and 28.79% respectively. These lines would make a positive contribution to masson pine breeding in the future. |
| Key words: Pinus massoniana, clonal lines, variance analysis, repeatability, correlation analysis |
