A reciprocal translocation between ’Garfi’ almond and ’Nemared’ peach

A map with 51 markers (46 RFLPs and five isozymes) was constructed using an interspecific F₂ population between ’Garfi’ almond (Prunus amygdalus Batsch.) and ’Nemared’ peach [Prunus persica (L.) Batsch.]. This map was developed by selecting markers covering most of the distance of the eight linkage groups from previously constructed Prunus maps. The markers studied in this population mapped to seven linkage groups instead of the eight expected in Prunus. Markers belonging to groups 6 and 8 in previous maps formed a single group in the ’Garfi’×’Nemared’ F₂ and several marker pairs placed in different groups in other maps exhibited tight linkages. The study of pollen fertility and chromosome behavior during meiosis in the F₁ generation allowed us to confirm the hypothesis that a reciprocal translocation exists between ’Garfi’ and ’Nemared’. Based on independent evidence of linkage between markers and pollen fertility data in the F₂ population, we concluded that the breakpoint of the reciprocal translocation was placed between markers AC50 and AG26A in group 6 and between markers AG112A and FG230A in group 8.

Authors and Affiliations

1. Institut de Recerca i Tecnologia Agroalimentàries (IRTA), Departament de Genètica Vegetal, Carretera de Cabrils s/n, 08348 Cabrils (Barcelona), Spain e-mail: pere.arus@irta.es, , , , , , ES

   B. Jáuregui, M.C. de Vicente, R. Messeguer & P. Arús

2. Servicio de Investigación Agraria (SIA-DGA), Unidad de Fruticultura, Apartado 727, 50080 Zaragoza, Spain, , , , , , ES

   A. Felipe

3. INRA, Centre de Bordeaux, Unité de Recherches sur les Espèces Fruitières et la Vigne, B.P. 81, 33883 Villenave d’Ornon Cedex, France, , , , , , FR

   A. Bonnet & G. Salesses

Received: 28 June 2000 / Accepted: 17 October 2000

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