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Microsatellite genotyping of carnation varieties
M J M Smulders1, Y Noordijk, W Rus-Kortekaas
1Plant Research International, P.O. Box 16, 6700 AA Wageningen, The Netherlands. m.j.m.smulders@plant.wag-ur.nl
Summary
Developed microsatellite markers for carnation (Dianthus caryophyllus) effectively genotype varieties. These DNA markers distinguish cultivars, grouping mutants with their original types, aiding genetic studies.
Area of Science:
- Plant genetics
- Molecular biology
- Horticultural science
Background:
- Microsatellite markers are valuable genetic tools for plant variety identification.
- Developing novel markers is crucial for enhancing the genetic resolution of carnation (Dianthus caryophyllus) studies.
Purpose of the Study:
- To develop and characterize a set of sequence-tagged microsatellite markers for carnation.
- To assess the utility of these markers for genotyping diverse carnation cultivars.
Main Methods:
- Development of 11 sequence-tagged microsatellite markers from an enriched DNA library.
- Genotyping of 82 carnation cultivars using a semi-automated fluorescence-based method.
- Analysis of allele number, effective allele number, and heterozygosity.
Main Results:
- 11 novel and 3 database-derived microsatellite markers were successfully employed.
- Markers amplified 4-16 alleles per locus, with effective allele numbers ranging from 1.9 to 6.0.
- High heterozygosity (0.51-0.99) was observed for the best markers, enabling cultivar discrimination, though mutants were grouped with originals.
Conclusions:
- The developed microsatellite markers are effective for differentiating carnation cultivars.
- The marker set shows potential for genetic diversity studies and cultivar identification in carnations.
- The grouping of sport mutants with original cultivars highlights the markers' ability to reflect genetic relatedness.