Articles
A JOINT LAIMBURG – FEM MOLECULAR MARKERS PROJECT FOR APPLE FRUIT QUALITY TRAITS USING THE PEDIGREE BASED ANALYSIS STRATEGY
Article number
1100_11
Pages
91 – 94
Language
English
Abstract
In apple breeding fruit quality is a crucial aspect to guarantee commercial
success of new varieties.
Among the several quality attributes, individual sugars and
acid components, as well as texture, are considered important features due to their
significant contribution to sensory quality and consumers acceptance.
In traditional
breeding, however, selection for these particular traits is a time consuming process, due
to the long unproductive juvenile phase of apple seedlings.
This step can be assisted to
date by the use of molecular markers, an important diagnostic tool useful to anticipate
and assist the identification of novel apple varieties characterized by superior fruit
quality behaviour.
However, the routinely implementation of molecular markers in
breeding programs is still limited.
In this study a new approach named Pedigree Based
Analysis will be used on six full-sib progenies and their pedigree (composed by 15
varieties, represented by founders and ancestors), to target the main set of quantitative
trait loci (QTLs). This strategy will allow the identification of the most valuable alleles
present in the breeding activities of both Italian institutes.
The ultimate goal of the
Laimburg – FEM joint project is the identification and validation of molecular markers
as a suitable tool for Marker Assisted Breeding in the two on-going apple breeding
programs.
success of new varieties.
Among the several quality attributes, individual sugars and
acid components, as well as texture, are considered important features due to their
significant contribution to sensory quality and consumers acceptance.
In traditional
breeding, however, selection for these particular traits is a time consuming process, due
to the long unproductive juvenile phase of apple seedlings.
This step can be assisted to
date by the use of molecular markers, an important diagnostic tool useful to anticipate
and assist the identification of novel apple varieties characterized by superior fruit
quality behaviour.
However, the routinely implementation of molecular markers in
breeding programs is still limited.
In this study a new approach named Pedigree Based
Analysis will be used on six full-sib progenies and their pedigree (composed by 15
varieties, represented by founders and ancestors), to target the main set of quantitative
trait loci (QTLs). This strategy will allow the identification of the most valuable alleles
present in the breeding activities of both Italian institutes.
The ultimate goal of the
Laimburg – FEM joint project is the identification and validation of molecular markers
as a suitable tool for Marker Assisted Breeding in the two on-going apple breeding
programs.
Authors
L. Lozano, M. Di Guardo, W.E. van de Weg, M.C.A.M. Bink, R. Velasco, F. Costa, W. Guerra
Keywords
Malus ×domestica, fruit quality, QTLs, Pedigree Based Analysis, markerassisted selection
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