文献类型：期刊文献

中文题名：鄂西亚高山区日本落叶松无性系生长性状变异分析与早期选择

英文题名：Variation of growth traits and early selection of Larixkaempferi clones in sub-alpine area of western Hubei Province

作者：杜超群[1] 许业洲[1] 孙晓梅[2] 柳运海[3] 解平书[3]

第一作者：杜超群

机构：[1]湖北省林业科学研究院;[2]中国林业科学研究院林业研究所;[3]湖北省建始县国有高岩子林场

年份：2015

卷号：34

期号：3

起止页码：19-23

中文期刊名：华中农业大学学报

外文期刊名：Journal of Huazhong Agricultural University

收录：CSTPCD;;北大核心:【北大核心2014】；CSCD:【CSCD2015_2016】；

基金："十二五"农村领域国家科技计划课题"北方针叶树种高世代育种技术研究与示范"(2012BAD01B01);公益性行业科研专项"落叶松培育与高附加值集成材产业升级关键技术研究"(201104027)

语种：中文

中文关键词：日本落叶松;无性系;表型变异;遗传变异

外文关键词：Larix kaempferi; clones; phenotypic variation; genetic variation

分类号：S722.83

摘要：以建始县国有高岩子林场11年生日本落叶松混系超级苗无性系试验林为研究对象,分析不同林龄无性系生长性状表型和遗传变异,开展优良无性系初步选择,为鄂西亚高山区日本落叶松无性系推广利用提供材料。结果表明：11年生无性系间胸径、树高和材积变异系数变化范围分别为8.17%-29.53%、5.13%-23.08%、17.30%-60.42%;不同年龄无性系间胸径、树高和材积生长量均存在极显著差异,6-11年生无性系的胸径、树高和材积重复力变化范围分别为0.60-0.66、0.63-0.85、0.62-0.75;不同林龄胸径、树高与11年生材积均存在极显著正相关,胸径与材积的相关系数大于树高与材积的相关系数;以胸径为主要选择指标,兼顾无性系内表型变异选择5个优良无性系,入选率为8.6%,与实生对照相比,胸径、树高、材积遗传增益分别为8.19%、12.20%和34.45%。
The study was carried out with an ll-year-old clones test plantation from mixed super seedling of Larix kaempfer in the state-owned gaoyanzi forest farm in Jianshi county. The variations of growth traits and genetic variation at different ages were analyzed. A number of superior clones with fast-growth were selected for the popularization and application in sub-alpine area of western Hubei. The results showed that the clone coefficient of variation of DBH, height and volume in 11-year-old was ranged from 8. 17% to 29.53%,5. 13% to 23. 08%,and 17. 30% to 60. 42%, respectively. There were extremely significant difference with DBH, height and volume within different clones of different age. The repeatability of DBH,height and volume of clones from 6-year-old to 11-year-old was ranged from 0. 60 to 0. 66,0. 63 to 0. 85, and 0. 62 to 0. 75, respectively. Correlations between DBH, height in different age and volume in 11-year-old were positive and big. Correlations between DBH and volume were higher than that between height and volume. 5 superior clones were selected when select indicator was DBH and consideration was given to phenotypic variation in clone. Selective ratio was 8. 6%. The genetic gain of DBH, height and volume of superior clones was 8. 19 %, 12. 20 % and 34. 45 %.