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Title

The origin of the self-compatible almond 'Supernova'

AuthorsBošković, Radovan I.; Tobutt, Kenneth R.; Marchese, Annalisa; Martínez-García, Pedro J. CSIC ORCID
KeywordsAlmonds
Prunus dulcis
Incompatibility
Microsatellites
Issue Date16-Jan-2008
PublisherWiley-Blackwell
CitationPlant Breeding 127(1): 105-107 (2008)
AbstractThe almond cultivar 'Supernova' is reported in the literature as a late-flowering self-compatible mutant, obtained by the irradiation of the early-flowering self-incompatible cultivar 'Fascionello'. Our work to investigate the molecular basis of this form of self-compatibility has called into question the origin of 'Supernova'. Test selfing was performed both on 'Supernova' and on the accession of 'Fascionello' from which it was derived –'Fascionello-Rome'. Both proved self-compatible. Amplification of S-RNase alleles, using consensus primers from the signal peptide region to the second conserved region of the S-RNase gene and primers specific for allele Sf, confirmed 'Supernova' and 'Fascionello-Rome' indeed have the same (in)compatibility genotype S1Sf as the self-compatible cultivar 'Tuono'. Nine microsatellite markers were used to fingerprint the relevant accessions; 'Supernova' and 'Fascionello-Rome' were undistinguishable from 'Tuono'. Two Sicilian accessions, 'Fascionello' and 'Falso Fascionello', lacked Sf and differed at the SSR level, indicating no close relationship with 'Supernova'. Therefore we concluded that 'Fascionello-Rome' is actually the same as 'Tuono' and that 'Supernova' originates from 'Tuono' from which it derives its self-compatibility.
Description3 pages, 1 figure, 1 table.
Publisher version (URL)http://dx.doi.org/10.1111/j.1439-0523.2008.01421.x
URIhttp://hdl.handle.net/10261/18350
DOI10.1111/j.1439-0523.2008.01421.x
ISSN0179-9541
E-ISSN1439-0523
Appears in Collections:(CEBAS) Artículos

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