Identification of highly polymorphic DNA regions in tomato

✍ Scribed by B. Vosman; P. Arens; W. Rus-Kortekaas; M. J. M. Smulders

• Book ID: 104670368
• Publisher: Springer
• Year: 1992
• Tongue: English
• Weight: 917 KB
• Volume: 85-85
• Category: Article
• ISSN: 0040-5752
• DOI: 10.1007/bf00222865

✦ Synopsis

This paper describes the use of oligonucleotide probes to reveal highly polymorphic DNA regions in pomato. With a (GATA)4 probe the level of polymorphism detected is high enough to identify all 15 tomato cultivars used in this study. Individual plants of one cultivar all showed the same cultivar-specific DNA-finger-print. In an F2-population of self-fertilized cv. Sonatine, GATA-containing loci segregated in a Mendelian (3∶1) fashion. Experiments with in-vitro propagated plant material showed that the DNA-fingerprints are not affected by tissue-culture procedures. This indicates that changes in the genetic integrity, which often accompany in-vitro propagation (somaclonal variation), are not extended to the DNA detected with the (GATA)4 probe. The relative high stability and the Mendelian segregation of (GATA)4-derived DNA-fingerprints make them ideally suited for identification of tomato cultivars.