Image_4_Breeding Has Increased the Diversity of Cultivated Tomato in The Netherlands.pdf

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, repr... Mehr ...

Verfasser: Henk J. Schouten
Yury Tikunov
Wouter Verkerke
Richard Finkers
Arnaud Bovy
Yuling Bai
Richard G.F. Visser
Dokumenttyp: Image
Erscheinungsdatum: 2019
Schlagwörter: Botany / Plant Biology / Plant Systematics and Taxonomy / Plant Cell and Molecular Biology / Plant Developmental and Reproductive Biology / Plant Pathology / Plant Physiology / Plant Biology not elsewhere classified / tomato varieties / diversity / introgressions / metabolomics / breeding
Sprache: unknown
Permalink: https://search.fid-benelux.de/Record/base-29174740
Datenquelle: BASE; Originalkatalog
Powered By: BASE
Link(s) : https://doi.org/10.3389/fpls.2019.01606.s011

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.