Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 560868
Title Breeding Has Increased the Diversity of Cultivated Tomato in The Netherlands
Author(s) Schouten, Henk J.; Tikunov, Yury; Verkerke, Wouter; Finkers, Richard; Bovy, Arnaud; Bai, Yuling; Visser, Richard G.F.
Source Frontiers in Plant Science 10 (2019). - ISSN 1664-462X
DOI https://doi.org/10.3389/fpls.2019.01606
Department(s) Plant Breeding
EPS
GTB Teelt & Gewasfysiologie
Plant Breeding
PE&RC
Publication type Refereed Article in a scientific journal
Publication year 2019
Keyword(s) breeding - diversity - introgressions - metabolomics - tomato varieties
Abstract

It is generally believed that domestication and breeding of plants has led to genetic erosion, including loss of nutritional value and resistances to diseases, especially in tomato. We studied the diversity dynamics of greenhouse tomato varieties in NW Europe, especially The Netherlands, over the last seven decades. According to the used SNP array, the genetic diversity was indeed very low during the 1960s, but is now eight times higher when compared to that dip. The pressure since the 1970s to apply less pesticides led to the introgression of many disease resistances from wild relatives, representing the first boost of genetic diversity. In Europe a second boost ensued, largely driven by German popular media who named poor tasting tomatoes Wasserbomben (water bombs). The subsequent collapse of Dutch tomato exports to Germany fueled breeding for fruit flavor, further increasing diversity since the 1990s. The increased diversity in composition of aroma volatiles observed starting from 1990s may reflect the efforts of breeders to improve fruit quality. Specific groups of aroma compounds showed different quantitative trend over the decades studied. Our study provides compelling evidence that breeding has increased the diversity of tomato varieties considerably since the 1970s.

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