Efficiency of genomic selection for breeding population design and phenotype prediction in tomato.
Genomic selection (GS), which uses estimated genetic potential based on genome-wide genotype data for a breeding selection, is now widely accepted as an efficient method to improve genetically complex traits. We assessed the potential of GS for increasing soluble solids content and total fruit weight of tomato. A collection of big-fruited F1varieties was used to construct the GS models, and the progeny from crosses was used to validate the models. The present study includes two experiments: a prediction of a parental combination that generates superior progeny and the prediction of progeny phenotypes. The GS models successfully predicted a better parent even if the phenotypic value did not vary substantially between candidates. The GS models also predicted phenotypes of progeny, although their efficiency varied depending on the parental cross combinations and the selected traits. Although further analyses are required to apply GS in an actual breeding situation, our results indicated that GS is a promising strategy for future tomato breeding design.
Vegetable Breeding and Genome Division, Institute of Vegetable and Tea Science, National Agriculture and Food Research Organization, Tsu, Mie, Japan.
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Yamamoto
Vegetable Breeding and Genome Division, Institute of Vegetable and Tea Science, National Agriculture and Food Research Organization, Tsu, Mie, Japan.
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Matsunaga
Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo-Ku, Tokyo, Japan.
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Onogi
Vegetable Production Technology Division, Institute of Vegetable and Tea Science, National Agriculture and Food Research Organization, Tsukuba, Ibaraki, Japan.
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Ohyama
Vegetable Breeding and Genome Division, Institute of Vegetable and Tea Science, National Agriculture and Food Research Organization, Tsu, Mie, Japan.
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Miyatake
Vegetable Breeding and Genome Division, Institute of Vegetable and Tea Science, National Agriculture and Food Research Organization, Tsu, Mie, Japan.
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Yamaguchi
Vegetable Breeding and Genome Division, Institute of Vegetable and Tea Science, National Agriculture and Food Research Organization, Tsu, Mie, Japan.
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Nunome
Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo-Ku, Tokyo, Japan.
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Iwata
Vegetable Breeding and Genome Division, Institute of Vegetable and Tea Science, National Agriculture and Food Research Organization, Tsu, Mie, Japan.
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Fukuoka
D003433:Crosses, Genetic; D018745:Genome, Plant; D060005:Genotyping Techniques; D015810:Linkage Disequilibrium; D018551:Solanum lycopersicum / Q000235:genetics*; D008957:Models, Genetic; D000069600:Plant Breeding; D012641:Selection, Genetic