COMPARATIVE MAPPING OF PRUNUS ARMENIACA, PRUNUS CERASIFERA X PRUNUS ARMENIACA AND PRUNUS REFERENCE MAP

Apricot and plum x apricot genetic linkage maps were constructed taking as a reference the almond ‘Texas’ x peach ‘Earlygold’ map (Joobeur et al., 1998; Aranzana et al., 2003) named ‘T x E’. The apricot mapping population was an intraspecific cross between ‘Polonais’ and ‘Stark Early Orange’. The plum x apricot mapping population (P. xdasycarpa) was issued from an interspecific cross between Myrobalan plum (Prunus cerasifera Ehrh.) and apricot (Prunus armeniaca L.). The apricot parent (A3923) was a hybrid between ‘Screara’ and ‘Stark Early Orange’ (clone A669). These populations are part of breeding programs which aim at creating new genotypes combining several important traits: mainly fruit quality traits and disease resistance including sharka for apricot cultivars, graft compatibility, and pest and disease resistance for rootstocks.
Apricot and Myrobalan maps were constructed by selecting a set of codominant markers on the ‘T x E’ map and by adding dominant markers.
A total of 232 markers were distributed in the Myrobalan and apricot ‘A3923’ maps and 251 in the integrated apricot map (‘P x S’). A set of common markers allowed anchoring of the 8 groups of the apricot maps (‘P x S’ and ‘A3923’) and 6 groups of the Myrobalan map to the homologous groups of the ‘T x E’ map and displayed a good colinearity.
The remaining linkage group of the Myrobalan map was found to be composed of two linkage groups of the reference map.

XI Eucarpia Symposium on Fruit Breeding and Genetics

P. Lambert, M. Faurobert, E. Pelpoir, K. Moreau, J.L. Poëssel, J.M. Audergon

apricot, Myrobalan plum, rootstock, sharka, microsatellites, AFLP

https://doi.org/10.17660/ActaHortic.2004.663.10