‘Tempranillo Blanco’, más que una pérdida de color

  1. J. Tello 1
  2. C. Royo 1
  3. E. Baroja 1
  4. E. García Escudero 1
  5. J.M. Martínez Zapater 1
  6. P. Carbonell Bejerano 1
  1. 1 Instituto de Ciencias de la Vid y del Vino
    info

    Instituto de Ciencias de la Vid y del Vino

    Logroño, España

    ROR https://ror.org/01rm2sw78

Journal:
Enoviticultura

ISSN: 2013-6099

Year of publication: 2022

Issue: 74

Type: Article

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Abstract

A complex chromosomal rearrangement event underlies the origin of ‘Tempranillo Blanco’, a white–berried somatic variant of ‘Tempranillo Tinto’. A comparison of their reproductive performance allowed us to determine that the distinctive low weight of ‘Tempranillo Blanco’ clusters derives from a markedly low number of seeded berries and a high tendency to millerandage, two features that derive from a significantly low fruit set rate. This distinctive trait derives from the low gamete viability observed in Tempranillo Blanco, a consequence of the chromosomal rearrangement that led to the loss of colour in this new cultivar. Nevertheless, the lower yield performance of ‘Tempranillo Blanco’ can be an acceptable trade–off for high quality winemaking, as the lower number of seeded berries per cluster reduces cluster compactness, which generates a better microclimate that reduces its susceptibility to fungal diseases and improves must composition.

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