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| 杉木无性系早-晚龄生长性状的相关性及早期选择的研究 | |
| 引用本文： | 胡德活,林绪平,阮梓材,陈忠林,龚益广,黄小平.杉木无性系早-晚龄生长性状的相关性及早期选择的研究[J].林业科学研究,2001,14(2):168-175. |
| 作者姓名： | 胡德活 林绪平 阮梓材 陈忠林 龚益广 黄小平 |
| 作者单位： | 1. 广东省林业科学研究院, 2. 广东省林业局, 3. 广东省国营西江林场, 4. 广东省国营曲江林场, |
| 基金项目： | “九五”国家科技攻关专题!“杉木建筑材树种遗传改良及大中材培育技术研究”( 96-0 1 1 -0 3 -0 1 ) |
| 摘 要： | 对10年生和7年生的两块杉木无性系试验林历年生长资料进行分析研究，得出结果；从第2年起无性系高，么董长量的F值、方差分量、重复力明显增大，并开始趋于稳定，无性系重复力较高，介于0．65－0．90之间居多。从3－4年生起，各年龄树高、胸径与近期对应性状的相关系数，以及与近期材积的相关系数增大，至趋于稳定。3－4年生后各年龄树高、胸径相关信息量亦表出与相关系数同样的趋势。遗传相关系数大于秩次，表型、环境相关系数，表明年龄间生和匠相关主要受遗传控制，无性系早期选择是有效的。早期选择最佳年龄、随主伐年龄的不同而有所差异，但介于3－4a之间，选择效率D早－V晚高于H早－V晚，前者出现最大选择效率的年龄早于或等于后者，所以选择指标倾向胸径。 |
| 关 键 词： | 杉木 无性系 生长性状 早－晚相关 早期选择 家系选择 |
| 文章编号： | 1001-1498(2001)02-0168-08 |
| 收稿时间： | 2000/8/22 0:00:00 |
Study on the Growth Character Correlation of Chinese Fir Clone and Early Selection |
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| HU De-huo,LIN Xu-ping,RUAN Zi-cai,CHEN Zhong-lin,GONG Yi-guang and HUANG Xiao-ping.Study on the Growth Character Correlation of Chinese Fir Clone and Early Selection[J].Forest Research,2001,14(2):168-175. | |
| Authors: | HU De-huo LIN Xu-ping RUAN Zi-cai CHEN Zhong-lin GONG Yi-guang and HUANG Xiao-ping |
| Affiliation: | Guangdong Forestry Research Institute, Guangzhou 510520, Guangdong, China;Forestry Department of Guangdong Province, Guangzhou 510173;Guangdong Forestry Research Institute, Guangzhou 510520, Guangdong, China;Forestry Farm of Xijiang,Yunan 527100,Guangdong,China;Forestry Farm of Xijiang,Yunan 527100,Guangdong,China;Forestry Farm of Qujiang,Qujiang 512100,Guangdong,China |
| Abstract: | The growth of 2 clonal plantation (7 and 10 years old) were measured and analyzed. The results showed that the F values of height and diameter increment, the component of variance and repeatability increased significantly and tended to be stabilized in the second year after planting. The repeatability of clone was between 0.65 and 0.90. From the third year on, both the correlation coefficient of height, DBH and the lately corresponding character and the correlation coefficient of height DBH and lately volume became higher and tended to be stabilized. The genetic correlation coefficient is larger than the coefficient of order, phenotype and environment. This showed that the growth correlation coefficient is mainly controlled by heredity, and early selection is effective. The best age of early selection is at 3rd and 4th year. The selective efficiency of early D late V is higher than that of early H late V, and the age of the former which has the biggest selective efficiency emerges earlier than that of the later. So the DBH is an efficient selective index. |
| Keywords: | Cunninghamia lanceolata clone growth character early late correlation early selection |
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