Genetic linkage map of peach [Prunus persica (L.) Batsch] using morphological and molecular markers

 A genetic linkage map of peach [Prunus persica (L.) Batch] was constructed in order to identify molecular markers linked to economically important agronomic traits that would be particularly useful for long-lived perennial species. An intraspecific F₂ population was generated from self-pollinating a single F₁ plant from a cross between a flat non-acid peach, ‘Ferjalou Jalousia^®’ and an acid round nectarine ‘Fantasia’. Mendelian segregations were observed for 270 markers including four agronomic characters (peach/nectarine, flat/round fruit, acid/non-acid fruit, and pollen sterility) and 1 isoenzyme, 50 RFLP, 92 RAPD, 8 inter-microsatellite amplification (IMA), and 115 amplified fragment length polymorphism (AFLP) markers. Two hundred and forty-nine markers were mapped to 11 linkage groups covering 712 centiMorgans (cM). The average density between pairs of markers is 4.5 cM. For the four agronomic characters studied, molecular markers were identified. This map will be used for the detection of QTL controlling fruit quality in peach and, particularly, the acid and sugar content.

Authors and Affiliations

1. INRA, Unité de Recherche sur les Espèces Fruitières et la Vigne, Centre de Bordeaux, BP 81, 33883 Villenave d’Ornon cedex, France Fax: 00 335 56 84 30 83, , , , , , FR

   E. Dirlewanger, V. Pronier, C. Parvery, A. Guye & R. Monet

2. INRA, Station de Physiologie Végétale, Centre de Bordeaux, BP 81, 33883 Villenave d’Ornon cedex, France, , , , , , FR

   C. Rothan

Received: 1 November 1997 / Accepted: 31 March 1998

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