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Research Project: Management of Temperate-Adapted Fruit, Nut, and Specialty Crop Genetic Resources and Associated Information

Location: National Clonal Germplasm Repository

Title: Genome-assisted breeding in the octoploid strawberry

Author
item Verma, Sujett - University Of Florida
item Osorio, Luis - University Of Florida
item Lee, Seonghee - University Of Florida
item Bassil, Nahla
item Whitaker, Vance - University Of Florida

Submitted to: Springer Verlag
Publication Type: Book / Chapter
Publication Acceptance Date: 6/9/2018
Publication Date: 6/9/2018
Citation: Verma, S., Osorio, L., Lee, S., Bassil, N.V., Whitaker, V. 2018. Genome-assisted breeding in the octoploid strawberry. In: Hytönen T., Graham J., Harrison R., editors. The Genomes of Rosaceous Berries and their Wild Relatives. Berlin, Germany: Springer, Cham. p. 161-184. https://doi.org/10.1007/978-3-319-76020-9_12.
DOI: https://doi.org/10.1007/978-3-319-76020-9_12

Interpretive Summary: This book chapter describes the development and use of eight DNA tests for fruit quality and disease resistance traits in the cultivated strawberry. We also present results and an overview of other genomics tools for identifying regions responsible for economic traits in this important fruit crops and how to use this information for selecting desirable genotypes and accelerating genetic improvement.

Technical Abstract: The application of genomic information to the breeding of allo-octoploid (2n = 8× = 56) cultivated strawberry (Fragaria ×ananassa ) has increased rapidly in the last five years. These advances have been fueled by technological improvements in high-throughput genotyping and genome sequencing, as well as concerted efforts to develop DNA tests for routine use in breeding. Genome-wide and sub-genome-specific markers have advanced availability of DNA tests for major loci, as well as the development and validation of genomic selection methodology for complex traits in strawberry. Eight DNA tests for fruit quality and disease resistance loci are fully or partially in the public sphere. Genome-wide predictions have delivered genetic gain efficiencies for parent selection larger than 50% of conventional methods but without the need for phenotypic information. Meanwhile, the construction of haploblocks and haplotypes, allows increased understanding of genome structure as it relates to breeding applications. With octoploid sequence assemblies merely months away and the development of gene editing technologies, precision manipulation of genes may shape the future of strawberry genetic improvement.