| 火力楠家系木材性状遗传变异与早期选择 |
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| 引用本文： | 李清莹,仲崇禄,姜清彬,张勇,陈羽,魏永成,陈珍.火力楠家系木材性状遗传变异与早期选择[J].华南农业大学学报,2018,39(4):73-79. |
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| 作者姓名： | 李清莹 仲崇禄 姜清彬 张勇 陈羽 魏永成 陈珍 |
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| 作者单位： | 中国林业科学研究院热带林业研究所/热带林业研究国家林业局重点实验室 |
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| 基金项目： | 中央级公益性科研院所基本科研项目（CAFYBB2016SZ002）；“十三五”国家重点研发计划子课题（2017YFD0601101-7）；林业公益性行业科研专项（201204304-02） |
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| 摘 要： | 【目的】通过对火力楠Michelia macclurei家系材性遗传参数的估算及材性与生长性状的相关性分析,了解其材性的家系遗传变异规律,为火力楠优良家系选择和种质资源合理开发利用提供科学依据。【方法】以火力楠种源家系试验林中的100个家系为试验材料,对木材基本密度、纤维长度、纤维宽度和纤维长宽比4个材性性状的遗传变异规律进行分析。【结果】火力楠各木材性状在家系间存在极显著差异(P0.01),具有较大的选育潜力。木材基本密度、纤维长度、纤维宽度及纤维长宽比的变幅分别为0.38~0.53 g·cm~(–3)、0.65~0.91 mm、23.20~28.87μm和22.92~38.66,平均值分别为0.48 g·cm~(–3)、0.79 mm、25.88μm和30.74。性状相关分析表明,除纤维长度与胸径、材积呈不显著遗传相关外,各材性性状与生长性状显著相关,木材基本密度和纤维长度之间相关性不显著,可以独立选择。木材基本密度和纤维长度的单株遗传力分别为0.374和0.372,均受高度遗传控制。纤维宽度和纤维长宽比的单株遗传力分别为0.166和0.231,均受中度遗传控制。【结论】采用强度和中度2种选择方法,对材性优良家系进行选择,结合实际生产以及下一步的选育,中度选择更适合现有试验林的选择,共选出木材密度优良家系52个,纤维长度优良家系44个,共有家系23个,以此23个家系作为优良材性联合初选较为合适。
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| 关 键 词： | 火力楠 家系 木材性状 木材基本密度 纤维形态 遗传变异 早期选择 |
| 收稿时间： | 2017/12/25 0:00:00 |
Genetic variations and primary selections of main wood properties among Michelia macclurei families |
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| LI Qingying,ZHONG Chonglu,JIANG Qingbin,ZHANG Yong,CHEN Yu,WEI Yongcheng and CHEN Zhen.Genetic variations and primary selections of main wood properties among Michelia macclurei families[J].Journal of South China Agricultural University,2018,39(4):73-79. |
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| Authors: | LI Qingying ZHONG Chonglu JIANG Qingbin ZHANG Yong CHEN Yu WEI Yongcheng and CHEN Zhen |
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| Institution: | Research Institute of Tropical Forestry, Chinese Academy of Forestry/Key Laboratory of State Forestry Administration on Tropical Forestry Research, Guangzhou 510520, China,Research Institute of Tropical Forestry, Chinese Academy of Forestry/Key Laboratory of State Forestry Administration on Tropical Forestry Research, Guangzhou 510520, China,Research Institute of Tropical Forestry, Chinese Academy of Forestry/Key Laboratory of State Forestry Administration on Tropical Forestry Research, Guangzhou 510520, China,Research Institute of Tropical Forestry, Chinese Academy of Forestry/Key Laboratory of State Forestry Administration on Tropical Forestry Research, Guangzhou 510520, China,Research Institute of Tropical Forestry, Chinese Academy of Forestry/Key Laboratory of State Forestry Administration on Tropical Forestry Research, Guangzhou 510520, China,Research Institute of Tropical Forestry, Chinese Academy of Forestry/Key Laboratory of State Forestry Administration on Tropical Forestry Research, Guangzhou 510520, China and Research Institute of Tropical Forestry, Chinese Academy of Forestry/Key Laboratory of State Forestry Administration on Tropical Forestry Research, Guangzhou 510520, China |
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| Abstract: | |
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| Keywords: | Michelia macclurei family wood property wood basic density fiber morphology genetic variation early selection |
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