| 柚木无性系生长性状的遗传变异与选择效应 |
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| 引用本文： | 黄桂华,梁坤南,周再知,周树平,杨光,王西洋.柚木无性系生长性状的遗传变异与选择效应[J].华南农业大学学报,2019,40(1):101-106. |
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| 作者姓名： | 黄桂华 梁坤南 周再知 周树平 杨光 王西洋 |
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| 作者单位： | 中国林业科学研究院 热带林业研究所,广东 广州,510520;云浮市林业科学和技术推广中心,广东 云浮,527300 |
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| 基金项目： | 广东省科技计划项目（2016A020210019）；“十三五”国家重点研发计划（2016YFD0600602）；中央级公益性科研院所基本科研业务费专项（CAFYBB2017ZA001-7） |
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| 摘 要： | 【目的】掌握柚木Tectona grandis无性系性状遗传变异规律以及无性系与立地的互作效应,选育优良无性系。【方法】采用随机完全区组设计,开展柚木无性系区域性两点试验。【结果】方差分析结果显示,3.5年生柚木无性系树高、胸径、单株材积在试验地点间、无性系间、无性系×立地互作间均呈极显著差异。海南定安试验点柚木无性系树高的变异系数较小(0.092),定安试验点胸径的变异系数和云南景谷试验点树高、胸径的变异系数都较大(0.118～0.167),定安和景谷试验点3.5年生单株材积的变异系数分别达到0.327和0.305。定安试验点柚木无性系树高和胸径的重复力分别为0.873和0.852,景谷试验点柚木无性系树高和胸径的重复力分别为0.851和0.773,定安和景谷试验点3.5年生单株材积的重复力分别为0.863和0.784。【结论】为海南定安地区筛选出速生柚木无性系3078-5、7029、7122、7514和7559,入选无性系的平均树高、胸径和单株材积分别比对照提高21.11%、19.82%和60.53%;为云南景谷地区筛选出速生柚木无性系7029、Z408、7509、7559和8301,入选无性系的平均树高、胸径和单株材积分别比对照提高31.69%、33.66%和128.24%;选择后,2个试验点的材积遗传增益分别达到40.26%和34.57%,其中优良无性系7029和7559为两地共有。
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| 关 键 词： | 柚木 无性系 区域测定 遗传变异 互作效应 |
| 收稿时间： | 2018/4/9 0:00:00 |
Genetic variation and selective effect of growth traits of teak clones |
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| HUANG Guihu,LIANG Kunnan,ZHOU Zaizhi,ZHOU Shuping,YANG Guang and WANG Xiyang.Genetic variation and selective effect of growth traits of teak clones[J].Journal of South China Agricultural University,2019,40(1):101-106. |
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| Authors: | HUANG Guihu LIANG Kunnan ZHOU Zaizhi ZHOU Shuping YANG Guang and WANG Xiyang |
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| Institution: | Research Institute of Tropical Forestry, Chinese Academy of Forestry, Guangzhou, Guangdong 510520, China,Research Institute of Tropical Forestry, Chinese Academy of Forestry, Guangzhou, Guangdong 510520, China,Research Institute of Tropical Forestry, Chinese Academy of Forestry, Guangzhou, Guangdong 510520, China,Yunfu Forestry Science and Technology Promotion Center, Yunfu, Guangdong 527300, China,Research Institute of Tropical Forestry, Chinese Academy of Forestry, Guangzhou, Guangdong 510520, China and Research Institute of Tropical Forestry, Chinese Academy of Forestry, Guangzhou, Guangdong 510520, China |
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| Abstract: | Objective To analyze genetic variation in growth traits of Tectona grandis clone and interaction between clone and site, and to select superior teak clones.Method Regional field tests of teak clones at two sites were carried out by using randomized complete block design.Result Analysis of variance results showed that tree height, DBH, individual volume of teak at 3.5 years old were all significantly different among site, clones and clone×site interaction. The variation coefficient of tree height for teak clones in Ding''an was relatively small (0.092), and the variation coefficients of DBH in Ding''an and both tree height and DBH in Jinggu were relatively large (0.118−0.167). The variation coefficients of individual volume in Ding''an and Jinggu were 0.327 and 0.305, respectively. The repeatability of tree height and DBH in Ding''an were 0.873 and 0.852, respectively. The repeatability of tree height and DBH in Jinggu were 0.851 and 0.773, respectively. The repeatability of individual volume for teak clones at 3.5 years old in Ding''an and Jinggu were 0.863 and 0.784, respectively.Conclusion The selected fast-growing clones for Ding''an area in Hainan were 3078-5, 7029, 7122, 7514 and 7559. The mean tree height, DBH and individual volume for the selected clones were 21.11%, 19.82% and 60.53% higher than that of the control, respectively. The superior clones of fast-growing for Jinggu area in Yunnan were 7029, Z408, 7509, 7559 and 8301. The mean tree height, DBH and individual volume for the selected clones were 31.69%, 33.66% and 128.24% higher compared with control, respectively. The genetic gain of individual volume in Ding''an and Jinggu reached 40.26% and 34.57%, respectively. The clone 7029 and 7559 were the shared superior clones in both sites. |
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| Keywords: | Tectona grandis clone regional test genetic variation interaction effect |
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