Accuracy of genomic selection in European maize elite breeding populations

Zhao , Y. and Gowda, M. and Liu, W. and et al, . (2012) Accuracy of genomic selection in European maize elite breeding populations. Theoretical and Applied Genetics, 124 (4). pp. 769-776.

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Genomic selection is a promising breeding strategy for rapid improvement of complex traits. The objective of our study was to investigate the prediction accuracy of genomic breeding values through cross validation. The study was based on experimental data of six segregating populations from a half-diallel mating design with 788 testcross progenies from an elite maize breeding program. The plants were intensively phenotyped in multi-location field trials and fingerprinted with 960 SNP markers. We used random regression best linear unbiased prediction in combination with fivefold cross validation. The prediction accuracy across populations was higher for grain moisture (0.90) than for grain yield (0.58). The accuracy of genomic selection realized for grain yield corresponds to the precision of phenotyping at unreplicated field trials in 3–4 locations. As for maize up to three generations are feasible per year, selection gain per unit time is high and, consequently, genomic selection holds great promise for maize breeding programs

Item Type: Article
Author Affiliation: State Plant Breeding Institute, University of Hohenheim, 70599, Stuttgart, Germany
Subjects: Crop Improvement > Genetics/Genomics
Crop Improvement > Plant Breeding
Divisions: Maize
Depositing User: Ms K Syamalamba
Date Deposited: 20 May 2013 07:40
Last Modified: 20 May 2013 07:40
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