Roger Picañol

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Progeny of certain peach crosses include plants with slow ripening (SR) fruits that do not mature and remain on the tree after leaf fall. This character is determined by a single gene (Sr/sr) that segregated in the F1 population of the cross between ‘Belbinette’ and ‘Nectalady’ (Bb × Nl). Heterozygous (Srsr) in both parents, the recessive srsr homozygote(More)
Genetic analysis of a diverse set of 42 traits for flower (5), phenology (9), fruit quality (19), leaf (8) and disease resistance (1) was carried out in two interspecific almond × peach populations, an F2 (T × E) and a BC1 (T1E), from the cross between ‘Texas’ almond and ‘Earlygold’ peach. Traits related to flower, phenology, fruit quality, leaf morphology(More)
The character of flat versus round fruit shape is controlled by a single gene (S/s) on chromosome 6 in peach [Prunus persica (L.) Batsch], with the flat fruit phenotype produced by the S/s heterozygous genotype. We used 16 simple sequence repeat (SSR) markers at the S/s region and physically mapped them in the peach sequence. Seven were mapped in the new F1(More)
Peach (Prunus persica) and almond (Prunus dulcis) are two sexually compatible species that produce fertile offspring. Almond, a highly polymorphic species, is a potential source of new genes for peach that has a strongly eroded gene pool. Here we describe the genetics of a male sterile phenotype that segregated in two almond ('Texas') × peach ('Earlygold')(More)
This paper proposes a new breeding strategy, marker-assisted introgression (MAI), to obtain lines of perennial species with a single introgressed fragment from a compatible species two generations after the interspecific hybrid. MAI allows enrichment of the genome of a species with genes from a wild or exotic relative in a short timeframe and with an(More)
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