【摘要】 本文以兴安落叶松子代测试林15年的生长调查数据为研究对象,初步选择出3个优良家系。发现生长性状遗传力研究结果表明:兴安落叶松胸径指标受遗传控制较强,是开展家系及个体选择的最优指标,家系早期选择的适宜时间为林龄6年时,而林龄8年是开展家系内个体选择的适宜时间。更多还原

【Abstract】 Based on the survey data of 15 years in Larix gmelinii( Rupr.) Kuzen. for the progeny test forest,3 families were selected. At the same time,the growth of heritability showed that the diameter index was under strong genetic control,which was the optimal index to carry out family and individual selection. The appropriate time for early families selection was at the age of 6 year old,but the appropriate time for individual selection in family was at the age of 8 year old.更多还原