| 油松优树子代遗传变异与选择的初步研究 |
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| 引用本文： | 李军,李悦.油松优树子代遗传变异与选择的初步研究[J].北京林业大学学报,1998,20(3):19-24. |
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| 作者姓名： | 李军 李悦 |
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| 作者单位： | 河南省种苗站，北京林业大学森林资源与环境学院，辉县市林业局 |
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| 摘 要： | 对来自油松中部种子区晋南豫北亚区的３个种源５～６年生的１１４个优树自由授粉家系单地点测定结果表明，３个种源在主干高和地径生长上无显著差异；树高生长的家系遗传率在０．６左右，家系内的平均表型变异系数为３１．９％；近５９％家系的主干高生长超过对照，１／３家系超过对照１０％以上，最高的超过对照２８％；有３４个无性系主干高相对育种值超过０．２０，１６个超过０．１０，按２５％比例作后向选择，其子代预期遗传增益接近２６％；中选优良家系的平均育种值在７．６％左右；家系结合家系内的预期选择增益在１９％左右，其效果略低于后向选择．并讨论了选择技术，提出了发展多经济方向多树种的良种基地建议．
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| 关 键 词： | 油松，种源，子代测定，育种值，遗传增益 |
Progeny Test of Plus Trees and Advanced Selection of Pinus tabulaeformis |
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| Li Jun Li Yue Li Guofeng Zhang Hongfang Hou Zhenzhong Wang Haiyou Forest Tree Seed and Seedling Management Station of Henan,Zhengzhou,P.R.China College of Forest Resources and Environm.Progeny Test of Plus Trees and Advanced Selection of Pinus tabulaeformis[J].Journal of Beijing Forestry University,1998,20(3):19-24. |
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| Authors: | Li Jun Li Yue Li Guofeng Zhang Hongfang Hou Zhenzhong Wang Haiyou Forest Tree Seed and Seedling Management Station of Henan Zhengzhou PRChina College of Forest Resources and Environm |
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| Institution: | Li Jun 1) Li Yue 2) Li Guofeng 1) Zhang Hongfang 3) Hou Zhenzhong 3) Wang Haiyou 3) 1)Forest Tree Seed and Seedling Management Station of Henan,Zhengzhou,450003,P.R.China 2)College of Forest Resources and Environm |
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| Abstract: | One hundred and fourteen open pollinated families of 5～6 year old plus trees from three provenances were tested in one site.There are no significant differences in the stem height growth and base diameter growth among the three provenances.The heritability of stem height growth was evaluated as 0 6. There were 59% families growing better than the control and one third exceeding the control by 10%. The breeding values of selected clones and families were evaluated. The genetic gains of forward selection and backward selection were estimated. |
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| Keywords: | Pinus tabulaeformis provenance progeny test breeding value genetic gain |
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