QTL analysis of variation for vigour in rose
| Autor: | T. Hendriks, P. B. Visser, Theo W. Prins, Z. Yan, Oene Dolstra, Piet Stam |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2007 |
| Předmět: |
construction
Population rflp Plant Science Horticulture Quantitative trait locus Biology aflp markers Laboratorium voor Plantenveredeling Genetic linkage PRI Biodiversiteit en Veredeling Chromosome regions Genetics Cultivar education education.field_of_study fungi food and beverages rapd PE&RC RAPD PRI Biodiversity and Breeding Plant Breeding quantitative trait loci Trait genetic-linkage maps Ploidy Agronomy and Crop Science |
| Zdroj: | Euphytica 154 (2007) 1-2 Euphytica, 154(1-2), 53-62 |
| ISSN: | 0014-2336 |
| Popis: | The improvement of energy efficiency in the greenhouse production of cut rose and pot rose can be achieved through the use of rose cultivars having vigorous growth. A better understanding of the inheritance of vigour and its related traits will assist the breeding activities. Quantitative trait locus (QTL) analyses were performed with the help of an integrated linkage map of a diploid rose population originating from a cross between Rosa multiflora-derived genotypes. The underlying datasets for ten vigour-related traits were collected in an evaluation study of this population in two greenhouse experiments with suboptimal temperatures for growth. We identified ten chromosomal regions, scattered over the seven linkage groups, containing QTLs for these traits. Considering each trait separately, we detected a total of 42 QTLs. Among these QTLs, 24 were found in both of the experiments, eight and ten were specific to either of the two experiments. The number of QTLs for individual traits varied from three to five with a respective contribution to the phenotypic variation from 12 to 35%. QTLs for highly correlated traits frequently co-localized, indicating a common genetic basis. Clustering of QTLs for different traits was noted in some chromosome regions, for instance, one on chromosome 2 included major QTLs for eight of ten traits under study, suggesting co-localization of several separate genes or/and the occurrence of various genes having pleiotropic effects. The discovery of markers associated to QTL regions is in roses the first step towards marker-assisted selection for vigour improvement enabling the transfer of useful QTL-alleles of R. multiflora to pot and cut roses. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|