Comparative analyses of genetic diversities within tomato and pepper collections detected by retrotransposon-based SSAP, AFLP and SSR

The retrotransposon-based sequence-specific amplification polymorphism (SSAP) marker system was used to assess the genetic diversities of collections of tomato and pepper industrial lines. The utility of SSAP markers was compared to that of amplified fragment length polymorphism (AFLP) and simple se...

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Veröffentlicht in:Theoretical and applied genetics 2005-03, Vol.110 (5), p.819-831
Hauptverfasser: Tam, S.M, Mhiri, C, Vogelaar, A, Kerkveld, M, Pearce, S.R, Grandbastien, M.A
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container_issue 5
container_start_page 819
container_title Theoretical and applied genetics
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creator Tam, S.M
Mhiri, C
Vogelaar, A
Kerkveld, M
Pearce, S.R
Grandbastien, M.A
description The retrotransposon-based sequence-specific amplification polymorphism (SSAP) marker system was used to assess the genetic diversities of collections of tomato and pepper industrial lines. The utility of SSAP markers was compared to that of amplified fragment length polymorphism (AFLP) and simple sequence repeat (SSR) markers. On the basis of our results, SSAP is most informative of the three systems for studying genetic diversity in tomato and pepper, with a significant correlation of genetic relationships between different SSAP datasets and between SSAP, AFLP and SSR markers. SSAP showed about four- to ninefold more diversity than AFLP and had the highest number of polymorphic bands per assay ratio and the highest marker index. For tomato, SSAP is more suitable for inferring overall genetic variation and relationships, while SSR has the ability to detect specific genetic relationships. All three marker results for pepper showed general agreement with pepper types. Additionally, retrotransposon sequences isolated from one species can be used in related Solanaceae genera. These results suggest that different marker systems are suited for studying genetic diversity in different contexts depending on the group studied, where discordance between different marker systems can be very informative for understanding genetic relationships within the study group.
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The utility of SSAP markers was compared to that of amplified fragment length polymorphism (AFLP) and simple sequence repeat (SSR) markers. On the basis of our results, SSAP is most informative of the three systems for studying genetic diversity in tomato and pepper, with a significant correlation of genetic relationships between different SSAP datasets and between SSAP, AFLP and SSR markers. SSAP showed about four- to ninefold more diversity than AFLP and had the highest number of polymorphic bands per assay ratio and the highest marker index. For tomato, SSAP is more suitable for inferring overall genetic variation and relationships, while SSR has the ability to detect specific genetic relationships. All three marker results for pepper showed general agreement with pepper types. Additionally, retrotransposon sequences isolated from one species can be used in related Solanaceae genera. These results suggest that different marker systems are suited for studying genetic diversity in different contexts depending on the group studied, where discordance between different marker systems can be very informative for understanding genetic relationships within the study group.</abstract><cop>Heidelberg</cop><cop>Berlin</cop><pub>Springer</pub><pmid>15700147</pmid><doi>10.1007/s00122-004-1837-z</doi><tpages>13</tpages></addata></record>
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subjects amplified fragment length polymorphism
Biological and medical sciences
Biological diversity
Capsicum
Capsicum - genetics
Capsicum annuum
Classical genetics, quantitative genetics, hybrids
Cluster Analysis
DNA Primers
Evaluation Studies as Topic
Fundamental and applied biological sciences. Psychology
Genetic aspects
Genetic diversity
genetic markers
Genetic Variation
Genetics of eukaryotes. Biological and molecular evolution
Genic rearrangement. Recombination. Transposable element
germplasm
lines
Lycopersicon esculentum
Lycopersicon esculentum - genetics
microsatellite repeats
Minisatellite Repeats - genetics
Molecular and cellular biology
Molecular genetics
Nucleic Acid Amplification Techniques - methods
peppers
Phylogeny
plant genetic resources
Polymorphism, Restriction Fragment Length
Pteridophyta, spermatophyta
retrotransposons
sequence-specific amplification polymorphism
Solanum lycopersicum var. lycopersicum
tomatoes
Vegetals
title Comparative analyses of genetic diversities within tomato and pepper collections detected by retrotransposon-based SSAP, AFLP and SSR
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