QTLs detection and mapping for yield-related traits in globe artichoke

LOPEZ ANIDO, FERNANDO; CRAVERO, VANINA; MARTIN, EUGENIA; COINTRY, ENRIQUE; LOPEZ ANIDO, FERNANDO; CRAVERO, VANINA; MARTIN, EUGENIA; COINTRY, ENRIQUE

SCIENTIA HORTICULTURAE

ELSEVIER SCIENCE BV

Lugar: Amsterdam; Año: 2016 p. 156 - 164

0304-4238

The genetic basis of yield-related traits in Cynara cardunculus L. was studied in a F1population derivedfrom an inter-botanical varietal cross between wild cardoon and ?Estrella del Sur FCA? globe artichoke.The aim of this work was identify and localize QTLs (Quantitative Trait Loci) associated with yield-relatedtraits as a first step to marker-assisted selection. Sixty-eight polymorphic markers (SSR) were used toanalyze the segregating population by ANOVA approach. A second analysis based in previous linkagemaps of the species was conducted in two seasons by SIM (Simple Interval Mapping) procedure. A totalof 66 QTLs associated with seven morphological traits were detected and mapped in the first evaluatedseason, of these 42 were validated among both seasons. All QTLs identified are major QTLs (explain >10%of phenotypic variation) and 27 of these are responsible for >20% of phenotypic variation. This workrepresents an initial platform for the dissection of a complex trait, such as yield in the species. Althoughthe QTLs detected need to be more precisely mapped, they will be targets in breeding programs of globeartichoke to improve yield-related traits.