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Kim E. Hummer

primary gene pool for the hybrid strawberry of commerce is octoploid (2 N = 8 x = 56, x = 7), although cultivars of diploid Fragaria vesca L. have been commercialized in Europe ( Hummer and Janick, 2009 ; Hummer et al., 2010 ). Artificial decaploid

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Natalia Salinas, Zhen Fan, Natalia Peres, Seonghee Lee, and Vance M. Whitaker

al., 2018 ). Florida is the main producer of winter strawberries ( Fragaria × ananassa ) in the United States ( Wu et al., 2012 ). In 2017, 20% (4371 ha) of the total U.S. land area and 9.6% ($337 million) of the total U.S. production value came from

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Kim E. Hummer, James R. Ballington, Chad E. Finn, and Thomas M. Davis

potential for cultivation in America. This article summarizes examples of Asian influence in American berry crops. In the strawberry genus, Fragaria L., different ploidy levels are endemic in separate regions or continents ( Staudt, 2009 ). Diploid (2 n

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Hävard Eikemo, May B. Brurberg, and Jahn Davik

The genus Fragaria in the rose family (Rosaceae) is well known for their edible fruits, and the economically important octoploid Fragaria × ananassa Dutch. produces large red strawberries and is grown all over the world. In 2007, the world

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Chad E. Finn, Jorge B. Retamales, Gustavo A. Lobos, and James F. Hancock

HISTORY The cultivated strawberry ( Fragaria × ananassa Duch. ex Rozier) originated from an accidental cross of the white-fruited Chilean strawberry [ F. chiloensis (L.) Mill. subsp. chiloensis f. chiloensis ] and the meadow strawberry ( F

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Rebecca M. Harbut, J. Alan Sullivan, John T.A. Proctor, and Harry J. Swartz

The cultivated strawberry was originally derived from the accidental hybridization of two wild, octoploid species, Fragaria chiloensis and Fragaria virginiana ( Darrow, 1966 ). The resulting octoploid hybrid, Fragaria × ananassa , is the basis

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Douglas D. Archbold

Plants of a diverse collection of Fragaria clones from a range of native habitats representing F. chiloensis, F. virginiana, F. virginiana glauca, and F. vesca, were grown in a controlled environment at one of three day/night temperatures, 15/15, 23/15, or 31/15°C. Relative growth rate (RGR) and net assimilation rate (NAR) were estimated from plant leaf areas and total dry weights. At 23/15°C, the species mean RGR and NAR values were comparable although clones within species exhibited significant variation. At 15/15 and 31/15°C, RGR and NAR for species were lower than at 23/15°C. At 31/15°C, chiloensis and vesca mean values were reduced more than the others, to less than 50% the 23/15°C values. Also, NAR declined most for chiloensis, to 45% the 23/15°C value. At 15/15°C, virginiana had much higher RGR and NAR values than the other species, and its NAR mean value was greater than at 23/15°C. Although the species means would suggest that there are interspecific differences in temperature response, intraspecific variability was also large. Thus, classifying Fragaria species by temperature response may be an over-generalization.

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James F. Hancock, Chad E. Finn, James J. Luby, Adam Dale, Pete W. Callow, and Sedat Serçe

The founding genetic base of the commercial strawberry, Fragaria × ananassa Duchesne in Lamarck, is limited. It originated ≈250 years ago when a few clones of South American F. chiloensis chiloensis (L.) Miller subsp. chiloensis forma

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Kim E. Hummer, Chad E. Finn, and Michael Dossett

, P.W. Serçe, S. 2010 Reconstruction of the strawberry, Fragaria × ananassa , using native genotypes of F. virginiana and F. chiloensis HortScience 45 1006 1013 Heiser, C.B. 1987 The wonderberry. In: The fascinating world of the nightshades. 2

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Basilio Carrasco, Marcelo Garcés, Pamela Rojas, Guillermo Saud, Raúl Herrera, Jorge B. Retamales, and Peter D.S. Caligari

staining solution). Table 1. Characteristics of six intersimple sequence repeat primers used for the analysis of Fragaria chiloensis accessions. Intersimple sequence repeat data analysis. From the ISSR patterns, each band was denoted