北京林业大学学报2017，Vol.39Issue(2)：1-8,8.DOI:10.13332/j.1000--1522.20160138
白桦全同胞子代测定及优良家系早期选择
Full-sib progeny test and early selection in superior families of Betula platyphylla
摘要
Abstract
Carrying out afforestation test of full-sib families can not only select excellent hybrid parents and combination, but also accelerate the improved process of seed orchard. In this study, 20 progeny seedlings were got from seed mother trees in seed orchard by tester strain mating design. Tree height ( H) , diameter at breast height ( DBH) and volume ( V) of tested trees, which were planted 6 years ago in Maoershan Mountain of northeastern China, were measured and analyzed. The results showed that there had highly significant differences ( P <0. 01 ) in H, DBH, and V among different female parents and varied hybrid combinations, and there had significant differences (P<0. 05) in DBH and V among different male parents. According to the results of multiple comparisons, excellent male and female parents were selected. Meanwhile, the tested hybrid combinations were synthetically evaluated by multi-objective decision-making method. The top five combinations were defined as superior hybrid combinations with the comprehensive evaluating value greater than 0. 80 , and the selection ratio was 25. 00%, among them Q2 and Q19 family were the best hybrid combinations. The average of selected excellent hybrid traits were 3. 85%, 10. 01%, 20. 82% higher than that of overall, the genetic gain was 2. 90%, 7. 64%, 16. 22%, respectively. These results provide a theoretical basis for selection of birch full-sib progeny and a reference for affinity option of birch high generation seed orchard.关键词
白桦/全同胞/子代测定Key words
Betula platyphylla/full-sib/progeny test分类
农业科技引用本文复制引用
刘宇,徐焕文,滕文华,姜静,刘桂丰..白桦全同胞子代测定及优良家系早期选择[J].北京林业大学学报,2017,39(2):1-8,8.基金项目
珍贵用材树种新品种选育技术研究(2012BAD01B05). （2012BAD01B05）
