| 8年生杉木第2代种子园半同胞子代测定林分析 |
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| 引用本文： | 孟庆银.8年生杉木第2代种子园半同胞子代测定林分析[J].福建林业科技,2012,39(2):1-5,27. |
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| 作者姓名： | 孟庆银 |
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| 作者单位： | 福建省沙县官庄国有林场,福建沙县,365500 |
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| 基金项目： | 福建省林木种苗科技攻关三期项目 |
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| 摘 要： | 在福建省沙县官庄国有林场开展杉木第2代种子园半同胞子代测定,结果表明:试验林生长优良,8年生时平均树高、胸径、材积分别为7.49 m、10.8 cm、0.0462 m3;杉木第2代种子园家系间生长差异极显著,生长性状在家系水平上受到中度偏弱的遗传控制,在单株水平上受到弱的遗传控制;以8年生材积为指标选择出12个优良家系和7株优良单株,入选优良家系材积平均遗传增益为11.93%,入选单株材积平均遗传增益为24.36%,选择效果明显。
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| 关 键 词： | 杉木 第2代种子园 子代测定 遗传参数 |
Analysis of Half-Sib Progeny Test Forest of the 2nd Generation Seed Orchard of 8-Year-Old Cunninghamia lanceolata |
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| MENG Qing-yin.Analysis of Half-Sib Progeny Test Forest of the 2nd Generation Seed Orchard of 8-Year-Old Cunninghamia lanceolata[J].Journal of Fujian Forestry Science and Technology,2012,39(2):1-5,27. |
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| Authors: | MENG Qing-yin |
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| Institution: | MENG Qing-yin(Guanzhuang National Forest Farm of Shaxian,Shaxian,Fuzhou 365500,Fujian,China) |
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| Abstract: | Half-sib progeny test of the 2nd generation seed orchard of C.lanceolata was carried out in the Guanzhuang National Forest Farm.The results showed that when the stand was 8 years old,the average of tree height,DHB and stem volume was 7.49 m,10.8 cm and 0.0462 m3 respectively.There were significant differences among families.Lower-moderately genetic factor controlled growth in family level,but it was lightly controlled in individual level.12 superior families and 9 superior individuals were selected based on 8-year-old stem volume.Average stem volume genetic gain of superior families was 11.93%,and that of superior individuals was 24.36%.The selection effect was evident. |
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| Keywords: | Cunninghamia lanceolata 2nd generation seed orchard progeny test genetic parameter |
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