Molecular and physiological identification of new S-alleles associated with self-(in)compatibility in local Spanish almond cultivars |
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| Authors: | Ossama Kodad José M Alonso Angel Fernández i Martí M Margarida Oliveira Rafel Socias i Company |
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| Institution: | 1. Unidad de Fruticultura, Centro de Investigación y Tecnología Agroalimentaria de Aragón (CITA), Av. Montañana 930, 50059 Zaragoza, Spain;2. Instituto de Tecnologia Química e Biológica (ITQB), Instituto de Biologia Experimental e Tecnológica (IBET), Quinta do Marquês, 2784-505 Oeiras, Portugal;3. Universidade de Lisboa, Faculdade de Ciências, Dep. de Biologia Vegetal, Campo Grande, 1749-016 Lisbon, Portugal |
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| Abstract: | The S-allele characterisation of ‘Alzina’ and ‘Garondès’, two local almond cultivars from the island of Majorca, by a multidimensional approach has allowed the confirmation of the presence of the Sf-allele and the identification of a new allele not previously described in almond, S36. When these cultivars were phenotypically evaluated, both showed a self-incompatible phenotype and were cross-incompatible, as assessed by artificial self- and cross-pollinations and fruit sets after field pollinations, confirming that their Sf-allele is in its active form, Sfa. Thus a new CGI group in almond is proposed and named XXVIII. These results confirm the wide diversity of S-alleles in almond both at genotypic and phenotypic levels, as well as their similarity with the S-alleles from other close Prunus species. This similarity suggests the possibility of allele introgression between species or allele identity by descent from a common ancestor. |
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| Keywords: | Prunus amygdalus Self-incompatibility S-alleles Cross-incompatibility groups |
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