Skip Navigation



AOBPreview published online on October 6, 2004
Annals of Botany, doi:10.1093/aob/mch217
© 2004 by Annals of Botany Company
This Article
Right arrow FREE Full Text (PDF) Freely available
Right arrow All Versions of this Article:
94/6/787    most recent
mch217v1
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Add to My Personal Archive
Right arrow Download to citation manager
Right arrowRequest Permissions
Google Scholar
Right arrow Articles by SARGENT, D. J.
Right arrow Articles by SIMPSON, D. W.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by SARGENT, D. J.
Right arrow Articles by SIMPSON, D. W.
Agricola
Right arrow Articles by SARGENT, D. J.
Right arrow Articles by SIMPSON, D. W.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

Received March 15, 2004
Revised August 11, 2004
Accepted September 3, 2004

Article

Quantitative and Qualitative Differences in Morphological Traits Revealed between Diploid Fragaria Species

DANIEL J. SARGENT 1*, M. GEIBEL 2, J. A. HAWKINS 3, M. J. WILKINSON 3, N. H. BATTEY 3, and D. W. SIMPSON 4

1 East Malling Research, New Road, East Malling, Kent ME19 6BJ, UK; School of Plant Sciences, University of Reading, Whiteknights, PO Box 221, Reading RG6 6AS, UK
2 Institute fur Pflanzengenetik und Kulturpflanzenforschung, Genbank Obst, Dresden-Pillnitz, Germany
3 School of Plant Sciences, University of Reading, Whiteknights, PO Box 221, Reading RG6 6AS, UK
4 East Malling Research, New Road, East Malling, Kent ME19 6BJ, UK

* To whom correspondence should be addressed. E-mail: dan.sargent{at}emr.ac.uk.


  Abstract

• Background and Aims The aims of this investigation were to highlight the qualitative and quantitative diversity apparent between nine diploid Fragaria species and produce interspecific populations segregating for a large number of morphological characters suitable for quantitative trait loci analysis.

• Methods A qualitative comparison of eight described diploid Fragaria species was performed and measurements were taken of 23 morphological traits from 19 accessions including eight described species and one previously undescribed species. A principal components analysis was performed on 14 mathematically unrelated traits from these accessions, which partitioned the species accessions into distinct morphological groups. Interspecific crosses were performed with accessions of species that displayed significant quantitative divergence and, from these, populations that should segregate for a range of quantitative traits were raised.

• Key Results Significant differences between species were observed for all 23 morphological traits quantified and three distinct groups of species accessions were observed after the principal components analysis. Interspecific crosses were performed between these groups, and F2 and backcross populations were raised that should segregate for a range of morphological characters. In addition, the study highlighted a number of distinctive morphological characters in many of the species studied.

• Conclusions Diploid Fragaria species are morphologically diverse, yet remain highly interfertile, making the group an ideal model for the study of the genetic basis of phenotypic differences between species through map-based investigation using quantitative trait loci. The segregating interspecific populations raised will be ideal for such investigations and could also provide insights into the nature and extent of genome evolution within this group.

Keywords: Wild strawberry, principal component analysis, multivariate statistics, ANOVA, quantitative trait loci, interspecific hybridization, genetic mapping.
Add to CiteULike CiteULike   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us    What's this?




Disclaimer: Please note that abstracts for content published before 1996 were created through digital scanning and may therefore not exactly replicate the text of the original print issues. All efforts have been made to ensure accuracy, but the Publisher will not be held responsible for any remaining inaccuracies. If you require any further clarification, please contact our Customer Services Department.