摘要
收集全国13个省(区)、183个产地的种源,按BIB设计进行杉木种源试验。结果表明:①杉木不同种源在树高、胸径、材积三个性状上都存在显著差异,生长快的种源比生长慢的种源树高大46％,胸径大55％,材积大2.16倍;②多性状主成分遗传距离综合评价,将参试种源分为四类,即速生、中等、慢生、极慢生。其中速生种源12个,大都集中在贵州东南和广西西北部的融江流域以及福建中北部的闽江上游流域;③杉木种源树高、胸径、材积三个性状具中上遗传力,h^2p为0.721 6～0.729 9,三个生长性状的基因型方差分量占总变异的11.3％～13.3％。
Based on 183 provenances selected from 13 provinces and regions, according to the BIB design of Chinese Fir provenance test, a variance analysis has been made on the height, diameter breast-height, and volume to show that: (1)a marked difference exists in the growth characteristics of the height, the D. B. H and the volume with a result that the quicker growth provenance Chinese Fir is 46% higher,55% bigger in D. B. H. and 2.16 times larger in volume than the slower one; (2) by way of a comprehensive praisal made on the various characteristics of the genetics distance, the provenances have been classified into 4 types, i.e. the fastest growth, the moderate, the slower and the slowest, of which the 12 fastest ones have the genetics gains of 5.22% in H, of 3.81% in D. B. H. and 12.65% in V as compaired with CK, there being a noted tendency that the 12 fastest provenances are centred mainly on Rongjian River valley, southeast of Guizhou Province and northwest of Guangxi Province, and the upper reaches of Minjian River valley, Fujian Province; (3) the provenances are of better heritability of 0.721 6~0.729 9,in H, D. B. H. and V, whose phenotype C. V. is larger than genotype C. V.; the volume genotype C. V. is larger than D. B. H. one, with the latter larger than the height C. V.; of 3 growth characteristics, the genetics variance components account for 11.3%~13.3% in the total variation,replication ones 17.7%~27.8%, and error ones 60.9%-69.0%.
出处
《林业科学研究》
CSCD
北大核心
1992年第1期1-6,共6页
Forest Research
基金
国家攻关项目
关键词
杉木
良种
选择
育种
Cunninghamia lanccolata
provenance selection
genetics gain
genetics distance
cluster analysis
