文献类型：期刊文献

中文题名：21年生杉木无性系生长与遗传评价

英文题名：Growth and Genetic Evaluation of 21-year-old Chinese fir Clonal Plantation

作者：段爱国[1] 张雄清[1] 张建国[1] 钟建德[2]

第一作者：段爱国

机构：[1]中国林业科学研究院林业研究所,国家林业局林木培育重点实验室,林木遗传育种国家重点实验室;[2]广西柳州市武宣县六峰山林场

年份：2014

卷号：27

期号：5

起止页码：672-676

中文期刊名：林业科学研究

外文期刊名：Forest Research

收录：CSTPCD;;Scopus;北大核心:【北大核心2011】；CSCD:【CSCD2013_2014】；

基金：国家"十二.五"科技支撑专题"杉木三代育种技术研究与示范(2012BAD01B0201)";国家863计划专题"杉木地理种源生长评价及优良无性系选育(2011AA100203-3)";江苏高校协同创新计划

语种：中文

中文关键词：杉木;无性系;生长;遗传;选育

外文关键词：Cunninghamia lanceolata ; clones ; genetics ; breeding

分类号：S791.27

摘要：对来源于湖南省的38个杉木无性系在广西柳州市21年生试验林各生长性状进行了调查与分析,发现中林龄杉木无性系间的胸径、树高、单株材积及树冠指标生长量均存在显著或极显著的差异;无性系树高、胸径、材积、枝下高、冠长及冠幅等性状重复力为58.65%87.19%,均达50%以上,表现为中等以上重复力,说明杉木无性系生长性状及树冠性状具有较高的遗传稳定性;无性系生长性状胸径、树高及材积与树冠性状冠长、冠幅均呈显著或极显著正相关;从38个供试杉木无性系中筛选出88号、68号、300号等3个优良杉木无性系,单株材积分别达0.494 8、0.438 9、0.412 9 m3,较优良种源、改良代种子园种子及优良家系组成的5个实生对照平均值分别高出43.59%、27.37%和19.82%。
The growth traits of 38 Chinese fir （Cunninghamia lanceolata） clones introduced from Hu＇ nan Province and grown in 21-year-old Chinese fir clonal plantation were surveyed and analyzed. The results of statistical analysis showed that there were significant or great significant genetic variations in height, diameter at breast height （ DBH）, volume, height of live branch, crown height and crown width among these clones. The repeatability of clones for height, DBH, volume, height of live branch, crown height and crown width varied between 58.65% and 87.19% , belonging to median or high genetically control level, indicating the three growth traits and three crown traits had high genetic stability. There were significant phenotypic correlations among height, DBH, volume and crown height or crown width. Three clones were selected from the 38 clones tested. The stem volumes of the three clones arrived at 0. 4948 m^3, 0.4389 m^3, and 0.4129 m^3 , which were 43.59%, 27.37%, and 19.82% higher than that of five controls comprised of excellent provenances, families and orchards seeds, respectively. The Chinese fir clones showed the best genetic gains and breeding prospect.