caa a22 4500 475796810 CHVBK 20180406123726.0 cr unu---uuuuu 170329e20000101xx s 000 0 eng 10.1007/s001220050027 doi (NATIONALLICENCE)springer-10.1007/s001220050027 Predicting age-age genetic correlations in tree-breeding programs: a case study of Pinus taeda L [Elektronische Daten] [D. P. Gwaze, F. E. Bridgwater, T. D. Byram, J. A. Woolliams, C. G. Williams] Abstract : A meta-analysis of 520 parents and 51,439 individuals was used to develop two equations for predicting age-age genetic correlations in Pinus taeda L. Genetic and phenotypic family mean correlations and heritabilities were estimated for ages ranging from 2 to 25 years on 31 sites in the southern U.S. and Zimbabwe. Equations for predicting age-age correlations based on P. taeda populations from west and east of the Mississippi River proved statistically different. Both predictive equations proved conservative for validation datasets consisting of younger tests in the U.S. and Zimbabwe. Age-dependent log-linear predictive equations were favored over growth-dependent equations. All P. taeda predictive equations based on genetic correlations favored earlier selection when compared to a generalized conifer predictive equation based on phenotypic correlations. The age-age correlations structure showed stability independent of planting density and across a wide range of family sizes. Springer-Verlag Berlin Heidelberg, 2000 Key words Age-age genetic correlations nationallicence Phenotypic correlations nationallicence Conifers nationallicence Tree breeding nationallicence Woody perennials nationallicence Gwaze D. P. Forest Research Center, P.O. Box HG595, Highlands, Harare, Zimbabwe, ZW aut Bridgwater F. E. USDA-Forest Service, Forest Science Lab, Texas A&M University, College Station Texas 77843-2585, USA e-mail: floydb@tamu.edu Fax: +409-862-2629, US aut Byram T. D. Forest Science Lab, Texas A&M University, College Station Texas 77843-2585, USA, US aut Woolliams J. A. Roslin Institute, Roslin Midlothian EH 25 9PS, Edinburgh, Scotland, UK, GB aut Williams C. G. Forest Science Dept., Texas A&M University, College Station Texas 77843-2135, USA, US aut https://doi.org/10.1007/s001220050027 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s001220050027 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Gwaze D. P. Forest Research Center, P.O. Box HG595, Highlands, Harare, Zimbabwe, ZW aut NATIONALLICENCE 700 1- Bridgwater F. E. USDA-Forest Service, Forest Science Lab, Texas A&M University, College Station Texas 77843-2585, USA e-mail: floydb@tamu.edu Fax: +409-862-2629, US aut NATIONALLICENCE 700 1- Byram T. D. Forest Science Lab, Texas A&M University, College Station Texas 77843-2585, USA, US aut NATIONALLICENCE 700 1- Woolliams J. A. Roslin Institute, Roslin Midlothian EH 25 9PS, Edinburgh, Scotland, UK, GB aut NATIONALLICENCE 700 1- Williams C. G. Forest Science Dept., Texas A&M University, College Station Texas 77843-2135, USA, US aut Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer