21年生杉木无性系生长与遗传评价

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0．4948、0．4389、0.4129m^3，较优良种源、改良代种子园种子及优良家系组...

Full description

Saved in:
Bibliographic Details
Published in林业科学研究 Vol. 27; no. 5; pp. 672 - 676
Main Author 段爱国 张雄清 张建国 钟建德
Format Journal Article
LanguageChinese
Published 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,北京100091%广西柳州市武宣县六峰山林场,广西武宣,545904 2014
Subjects
无性系
杉木
生长
选育
遗传
Cunninghamia lanceolata
杉木
clones
genetics
遗传
选育
无性系
生长
breeding
Online AccessGet full text
ISSN1001-1498

Cover

More Information
Summary: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0．4948、0．4389、0.4129m^3，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％。
Bibliography:11-1221/S
Cunninghamia lanceolata ; clones ; genetics ; breeding
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 wer
ISSN:1001-1498