作者
Fikret Isik, Jérôme Bartholomé, Alfredo Farjat, Emilie Chancerel, Annie Raffin, Leopoldo Sanchez, Christophe Plomion, Laurent Bouffier
发表日期
2016/1/1
期刊
Plant Science
卷号
242
页码范围
108-119
出版商
Elsevier
简介
A two-generation maritime pine (Pinus pinaster Ait.) breeding population (n= 661) was genotyped using 2500 SNP markers. The extent of linkage disequilibrium and utility of genomic selection for growth and stem straightness improvement were investigated. The overall intra-chromosomal linkage disequilibrium was r 2= 0.01. Linkage disequilibrium corrected for genomic relationships derived from markers was smaller (r V 2= 0.006). Genomic BLUP, Bayesian ridge regression and Bayesian LASSO regression statistical models were used to obtain genomic estimated breeding values. Two validation methods (random sampling 50% of the population and 10% of the progeny generation as validation sets) were used with 100 replications. The average predictive ability across statistical models and validation methods was about 0.49 for stem sweep, and 0.47 and 0.43 for total height and tree diameter, respectively. The …
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F Isik, J Bartholomé, A Farjat, E Chancerel, A Raffin… - Plant Science, 2016