QTL analysis of an advanced backcross of Lycopersicon peruvianum to the cultivated tomato and comparisons with QTLs found in other wild species

T. M. Fulton, T. Beck-Bunn, D. Emmatty, Y. Eshed, J. Lopez, V. Petiard, J. Uhlig, D. Zamir, S. D. Tanksley*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

222 Scopus citations

Abstract

A BC3 population previously developed from a backcross of Lycopersicon peruvianum, a wild relative of tomato, into the cultivated variety L. esculentum was analyzed for QTLs. Approximately 200 BC4 families were scored for 35 traits in four locations worldwide. One hundred and sixty-six QTLs were detected for 29 of those traits. For more than half of those 29 traits at least 1 QTL was detected for which the presence of the wild allele was associated with an agronomically beneficial effect despite the inferior phenotype of the wild parent. Eight QTLs for fruit weight could be followed through the BC2, BC3, and BC4, generations, supporting the authenticity of these QTLs. Comparisons were made between the QTLs found in this study and those found in studies involving two other wild species: the results showed that while some of these QTLs can be presumed to be allelic, most of the QTLs detected in this study are ones not previously discovered.

Original languageEnglish
Pages (from-to)881-894
Number of pages14
JournalTheoretical And Applied Genetics
Volume95
Issue number5-6
DOIs
StatePublished - Oct 1997

Keywords

  • Germplasm
  • Molecular markers
  • Quantitative trait loci Molecular breeding

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