摘要
六十年代以来,国内外许多学者在早期选择方面作过不少的研究,但无统一认识。Cannell认为,在林冠郁闭前,林木处于开放的生长环境,而在林冠郁闭后,处于竞争的生长环境,因此,树高在林冠郁闭前后可能不相关,甚至为负相关;Franklin的看法与此相似。但是,Lambethc在总结了8位学者对花旗松、北美黄松和火炬松等8种针叶树的研究结果后确信,树高生长的早期选择是有效的;叶培忠等对杉木优树子代和产地测定林的研究表明,早晚生长相关是显著的。油松(Pinus tabulaeformis Carr.)是我国北方主要造林树种之一,生长周期较长。本项研究所用材料是我国定植最早的油松测定林,为了供选择优树和早期预测时参考,缩短育种周期,我们将14年来的工作总结如下。
Based on the measurements in 14-year-old Pinus tabulaeformis Carr. stands which located at Heilihe tree farm in Ningcheng county, Inner Mongolia, consisted of 7 plus trees open-pollinated families and 23 origins, the correlations between early and late height growth among different origins, families and individuals were analysed by means of rank correlation, genetic correlation and phenotype correlation. It was shown that early predicting height growth was valid, and there was a significant correlation between seed weight (1000 grains) and height growth of 1 or 2 years old. nursery stocks.
出处
《林业科学》
EI
CAS
CSCD
北大核心
1990年第5期457-460,共4页
Scientia Silvae Sinicae
关键词
油松
子代测定
测定林
树高
生长
Pinus tabulae forms Carr.
Progeny test
Rank correlation
Genetic correlation
