QTL identification and phenotyping of fruit quality and disease resistance traits in octoploid strawberry (Fragaria × ananassa)

PhD project- Laima Antanaviciute

The cultivated strawberry (Fragaria × ananassa) has a complex octoploid genome and it is only recently that sizeable numbers of markers have been developed for breeding purposes, as part of marker-assisted breeding (MAB) programmes. The main focus of current research is to investigate the correlations between different traits and to identify and map novel molecular markers of importance to breeders in cultivated strawberry using quantitative trait loci (QTL) mapping. A better understanding of how complex traits are correlated at the genotypic and phenotypic level, and which QTL have pleiotropic effects upon important traits for crop breeders, will improve and enhance the selection of which QTL to use in MAB.

Fig.1 Pair wise correlation matrix of 22 different plant characteristics and fruit quality traits phenotyped within the ‘Redgauntlet’ × ‘Hapil’ mapping population. Positive correlations are highlighted in blue, negative correlations are highlighted in red, whereas white pies represent non-correlated traits. Different blue and red shades represents the level of  correlation coefficient (Spearman’s rank).

Fig.1 Pair wise correlation matrix of 22 different plant characteristics and fruit quality traits phenotyped within the ‘Redgauntlet’ × ‘Hapil’ mapping population. Positive correlations are highlighted in blue, negative correlations are highlighted in red, whereas white pies represent non-correlated traits. Different blue and red shades represents the level of correlation coefficient (Spearman’s rank).

hdc-logo

 

Related Links

EMR Vodcast

View

EMR Events

View

Latest News

View

Our People

View

Short Courses

View