Genetic gains underpinning a little-known strawberry Green Revolution

Mitchell J. Feldmann, Dominique D. A. Pincot, Glenn S. Cole and Steven J. Knapp ()
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Mitchell J. Feldmann: University of California Davis
Dominique D. A. Pincot: University of California Davis
Glenn S. Cole: University of California Davis
Steven J. Knapp: University of California Davis

Nature Communications, 2024, vol. 15, issue 1, 1-20

Abstract: Abstract The annual production of strawberry has increased by one million tonnes in the US and 8.4 million tonnes worldwide since 1960. Here we show that the US expansion was driven by genetic gains from Green Revolution breeding and production advances that increased yields by 2,755%. Using a California population with a century-long breeding history and phenotypes of hybrids observed in coastal California environments, we estimate that breeding has increased fruit yields by 2,974-6,636%, counts by 1,454-3,940%, weights by 228-504%, and firmness by 239-769%. Using genomic prediction approaches, we pinpoint the origin of the Green Revolution to the early 1950s and uncover significant increases in additive genetic variation caused by transgressive segregation and phenotypic diversification. Lastly, we show that the most consequential Green Revolution breeding breakthrough was the introduction of photoperiod-insensitive, PERPETUAL FLOWERING hybrids in the 1970s that doubled yields and drove the dramatic expansion of strawberry production in California.

Date: 2024
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DOI: 10.1038/s41467-024-46421-6

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