ArticleBMC molecular biology2010
Multipoint-likelihood maximization mapping on 4 segregating populations to achieve an integrated framework map for QTL analysis in pot azalea (Rhododendron simsii hybrids).
Article in BMC molecular biology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.
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17 citing papers in PubMed, 109 citations in OpenAlex.
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- Mapping a double flower phenotype-associated gene DcAP2L in Dianthus chinensis.Journal of experimental botany · 2020Article
- The Rhododendron Genome and Chromosomal Organization Provide Insight into Shared Whole-Genome Duplications across the Heath Family (Ericaceae).Genome biology and evolution · 2019Article
- Association mapping for floral traits in cultivated Paeonia rockii based on SSR markers.Molecular genetics and genomics : MGG · 2017Article
- Mapping X-Disease Phytoplasma Resistance inFrontiers in plant science · 2017Article
- Identification of Quantitative Trait Loci Controlling Root and Shoot Traits Associated with Drought Tolerance in a Lentil (Lens culinaris Medik.) Recombinant Inbred Line Population.Frontiers in plant science · 2016Article
- Disease Resistance Gene Analogs (RGAs) in Plants.International journal of molecular sciences · 2015Review
- Anchoring linkage groups of the Rosa genetic map to physical chromosomes with tyramide-FISH and EST-SNP markers.PloS one · 2014Article
- AFLP-based genetic mapping of the "bud-flowering" trait in heather (Calluna vulgaris).BMC genetics · 2013Article
- How to perform RT-qPCR accurately in plant species? A case study on flower colour gene expression in an azalea (Rhododendron simsii hybrids) mapping population.BMC molecular biology · 2013Article
- Comparative mapping in the Fagaceae and beyond with EST-SSRs.BMC plant biology · 2012Article
- Two-phase analysis in consensus genetic mapping.G3 (Bethesda, Md.) · 2012Article
- Two EST-derived marker systems for cultivar identification in tree peony.Plant cell reports · 2012Article
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Authors and funding
4 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundAzalea (Rhododendron simsii hybrids) is the most important flowering pot plant produced in Belgium, being exported world-wide. In the breeding program, flower color is the main feature for selection, only in later stages cultivation related plant quality traits are evaluated. As a result, plants with attractive flowering are kept too long in the breeding cycle. The inheritance of flower color has been well studied; information on the heritability of cultivation related quality traits is lacking. For this purpose, QTL mapping in diverse genetic backgrounds appeared to be a must and therefore 4 mapping populations were made and analyzed.
resultsAn integrated framework map on four individual linkage maps in Rhododendron simsii hybrids was constructed. For genotyping, mainly dominant scored AFLP (on average 364 per population) and MYB-based markers (15) were combined with co-dominant SSR (23) and EST markers (12). Linkage groups were estimated in JoinMap. A consensus grouping for the 4 mapping populations was made and applied in each individual mapping population. Finally, 16 stable linkage groups were set for the 4 populations; the azalea chromosome number being 13. A combination of regression mapping (JoinMap) and multipoint-likelihood maximization (Carthagène) enabled the construction of 4 maps and their alignment. A large portion of loci (43%) was common to at least two populations and could therefore serve as bridging markers. The different steps taken for map optimization and integration into a reference framework map for QTL mapping are discussed.
conclusionsThis is the first map of azalea up to our knowledge. AFLP and SSR markers are used as a reference backbone and functional markers (EST and MYB) were added as candidate genes for QTL analysis. The alignment of the 4 maps on the basis of framework markers will facilitate in turn the alignment of QTL regions detected in each of the populations. The approach we took is thoroughly different than the recently published integrated maps and well-suited for mapping in a non-model crop.
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