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| 木麻黄无性系造林对比试验 | |
| 引用本文： | 许秀玉.木麻黄无性系造林对比试验[J].广东林业科技,2010,26(2):30-35. |
| 作者姓名： | 许秀玉 |
| 作者单位： | 1. 广东省林业局,广州,510173 2. 广东省林业科学研究院 3. 汕头市林业科学研究所 |
| 基金项目： | 广东省科技厅农业攻关项目，广东省林业局林业科技计划 |
| 摘 要： | 文章运用方差分析、遗传参数估算、相关分析等方法对3.5年生42个木麻黄无性系试验林进行了优良无性系的筛选。结果表明：7个性状在无性系间均有极显著差异;树高、胸径、地径的重复力较高,分别为0.809、0.758、0.737,选择具有较好的效果;遗传相关分析显示,地径、树高、冠幅、通直度这4个性状之间存在遗传高度相关性;树高与冠幅早晚期相关分析显示,遗传相关和表型相关的强度趋势一致,而且遗传相关系数值要大于表型相关系数值。最后,筛选出8个生长迅速、适应性强的优良无性系及4个抗逆性强、冠幅开展,但树高、胸径生长相对缓慢的无性系。高径生长缓慢的无性系可用于与生长迅速的无性系材料进行混交,形成高低错落有致的复层混交结构,提高林分的防护功能。 |
| 关 键 词： | 木麻黄 无性系 筛选 对比试验 |
| 收稿时间： | 2009/8/25 0:00:00 |
| 修稿时间： | 2010/1/13 0:00:00 |
Study on Forestation effect of the different |
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| Xu Xiuyu.Study on Forestation effect of the different[J].Forestry Science and Technology of Guangdong Province,2010,26(2):30-35. | |
| Authors: | Xu Xiuyu |
| Institution: | Xie Jinlian Xu Xiuyu Wang Minghuai Zhan Chao′an(1.Forestry Department of Guangdong Province,Guangzhou,510173;2.Forest Research Institute of Guangdong Province;3.Forestry Research Institute of Shantou) |
| Abstract: | Based on 7 traits of 3.5 years old of 42 Casnarina equisetifolia clones, analysis of variance, correlation, genetic parameter estimation were carried out, and the better clones have been selected. Results showed that there were significant diferences in 7 trait values between clones. The repeatability of height, diameter at breast height(DBH) and collar diameter were high, respectively 0.809, 0.758, 0.737. Analysis of genetic correlation indicated that the 4 traits of height, collar diameter, crown breadth, stem straightness have significant correlation between each other. Analysis of DBH and crown breadth correlation indicated that the intensity trend of genetic correlation and phenotypic correlation is accord, and the value of genetic correlation coefficient is bigger than phenotypic correlation. |
| Keywords: | Casnarina equisetifolia clones screening contrast test |
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