Abstract

DURAN, Martín F; AGUERO, Cecilia B  and  MARTINEZ, Liliana E. Assessing the identity of the variety 'Pedro Giménez' grown in Argentina through the use of microsatellite markers. Rev. Fac. Cienc. Agrar., Univ. Nac. Cuyo [online]. 2011, vol.43, n.2, pp.193-202. ISSN 1853-8665.

'Pedro Giménez' is a white criolla variety cropped in Argentina, mainly in Mendoza and San Juan, being the most planted white variety destined for wine making in the country. Its origin remains unknown, as well as its relationship with Spanish variety 'Pedro Ximénez', mostly grown in Jerez, Spain. Previous works have probed that most of Criollas varieties existing in America at the moment, are the offispring of 'Muscat of Alexandria' x 'Criolla Chica'. The aim of the present work was to compare 'Pedro Giménez' with the Spanish variety 'Pedro Ximénez', and to establish its degree of relatedness to 'Muscat of Alexandria' and 'Criolla Chica'. Therefore we used a set of 18 nuclear SSR loci and 3 chloroplast SSR loci. 'Pedro Giménez' shared only 38% of the alleles under analysis with 'Pedro Ximénez', indicating that they are indeed two different varieties. In all 18 polymorphic nuclear SSR loci 'Pedro Giménez' shared 50% of its alleles with 'Muscat of Alexandria', while the other 50% of the alleles present in 'Pedro Giménez' were also present 'Moscatel de Alejandría' y el otro con 'Criolla in 'Criolla Chica'. This data, along with those Chica'. Estos datos, junto con el resultado del from the chloroplast SSR analysis, strongly análisis de SSR de cloroplastos, avalan la suggest that 'Pedro Giménez' is the progeny hipótesis que, como muchas de las variedades of 'Muscat of Alexandria' x 'Criolla Chica', being criollas, 'Pedro Giménez' sería fruto del the latest one the most likely female progenitor.

Keywords : Grapevine; Vitis vinifera; Microsatellites; Pedro Giménez.

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