Larix olgensis is one of the most important fast-growing timber species in northeast China. In this study， 51 L. olgensis clones from different stites were used as materials， the height and ground diameter of the 2-year-old seedlings were investigated and analyzed on the genetic stability and variation respectively. The results showed that the differences of seedling height and ground diameter for L. olgensis were extremely significant（P<0.01） within sites， clones or sites×clones respectively. The phenotypic variation coefficient of seedling height and ground diameter at different sites were from 23.89%-36.82%； and the repeatability of the ground diameter was 0.172 at Siping， but the repeatability of the rest sites were from 0.573-0.891 respectively. Genetic stability analysis results showed that 28 clones including LO 13 had the higher genetic stability respectively. The results of correlation analysis showed that there was an extremely significant positive correlation between seedling height and ground diameter. 10 clones with good comprehensive performance were selected from different site using the method of comprehensive evaluation of multiple traits with a selection rate of 20%； Both clones LO 10 and LO 26 were selected as elite clones showing the excellent performance and the stronger genetic stability in the different cite respectively.
%U https://bbr.nefu.edu.cn/EN/10.7525/j.issn.1673-5102.2021.03.003