Author: Céline BlondPublisher:
ISBN:
Category :
Languages : fr
Pages : 36
Book Description
One of the objectives of the HortResearch apple breeders is to develop new high quality apple cultivars with red flesh Previous studies identified a candidate gene controlling red colour in apple, MdMYB10, and led to the development of a molecular marker, Nzsnp_MdMYB10, within this gene. This present study maps the location of the red flesh gene on the apple genome, using a set of published microsatellites and Nzsnp_MdMYB10. We show the red flesh gene MdMYB10 is located on linkage group 9.Another objective of HortResearch is to develop disease resistant cultivars to decrease the use of pesticide. Apple scab is the major apple disease worldwide and is caused by the fungus Venturia inaequalis (Cooke) G,Winter. Several resistance genes are already known and used ; but some of them, for example Vf, have been circumvented by new V,inaequalis races. There is a need for durable scab resistance with new genes and the accession 'Dolgo' represented a new unused source of resistance to apple scab. This study maps the location of the gene Vdolgo on the apple genome using a whole genome scan approach. We show Vdolgo is located on the linkage group 2 in a region rich in apple scab resistance genes (i.e. Vr, Vbj, Vh2, Vh4, Vh8).