期刊
TREE GENETICS & GENOMES
卷 6, 期 1, 页码 113-125出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s11295-009-0233-x
关键词
Pinus radiata; Additive genetic variance; Full sibs; Genetic correlation; Genotype-by-environment interaction
Genetic variation for wood quality traits and diameter growth for radiata pine (Pinus radiata D. Don) at age 20/21 years was estimated from eight trials in Australia. The traits studied were wood density, acoustic time-of-flight (an indirect measure of stiffness) and diameter at breast height (DBH). Wood density and DBH exhibited significant additive genetic variation whereas non-additive effects were not significantly different from zero. Time of flight was also not significantly different from zero for both additive and non-additive effects, respectively. Average single-site heritability estimates (+/- SE) for wood density and DBH were 0.38 +/- 0.10 and 0.16 +/- 0.08, respectively. Pooled-site heritability estimates for wood density and DBH were 0.38 +/- 0.10 and 0.08 +/- 0.10, respectively. For density, there was little evidence of genotype-by-environment interaction (GEI) across the eight trials at the additive level (type B additive genetic correlation; r (BADD) = 0.73 +/- 0.08) and type B genetic correlation for full-sib families (r (BFS) = 0.64 +/- 0.08). In contrast, the type B additive genetic correlation for DBH was lower, (r (BADD) = 0.51 +/- 0.14), suggesting evidence of GEI. However, type B genetic correlation for full-sib families was moderate (0.63 +/- 0.11) for DBH, suggesting that there may be some stable full-sib families. On the basis of the results of this study, GEI should be considered in order to optimise deployment of improved germplasm in Australia.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据