| 杉木杂交后代胸径生长和木材体积质量的遗传变异及联合选择 |
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| 引用本文： | 林同龙. 杉木杂交后代胸径生长和木材体积质量的遗传变异及联合选择[J]. 浙江林学院学报, 2000, 17(2): 142-145 |
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| 作者姓名： | 林同龙 |
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| 作者单位： | 福建省南平市林业委员会,福建南平 |
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| 摘 要： | 研究了１０年生杉木杂交后代试验林的胸径生长和木材体积质量的遗传变异规律。结果表明：杉木胸径和木材体积质量在后代间存在显著差异，胸径的遗传变异系数为７．３９％，而木材的变异系数只有４．４５％，胸径的广义遗传力为０．７７，木材体积质量的广义遗传力则为０．８６；胸径与木材体积质量的遗传相关表现出中度以上的负相关（－０．６０４９）。采用简单指数法评选出４个优良杂交组合，胸径遗传增益为９．１８％，而木材体积
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| 关 键 词： | 杉木 杂交后代 遗传变异 联合选择 木材体积质量 |
Chinesefir |
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| Abstract: | This study was made in 10 year old Chinese fir plantation of filial generation in Fujian Province.The result shows that there is a great difference in DBH and wood volume weight among filial generations.The genetic variation coefficient of DBH is 7 39%,and wood volume weight is 4 45% only.The broad heritability of DBH is 0 77,and wood volume weight 0 86.There is a negative correlation in heredity between DBH and wood volume weight,and correlation coefficient is -0 604 9.Four superior cross combinations are selected by simple index method.Their genetic gain of DBH is 9 18%,and wood volume weight approximates to the ck(Weimin F 1 seed orchard). |
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| Keywords: | Chinese fir(Cunninghamia lanceolata) filial generations genetic variance genetic correlation combination selection wood volume weight |
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