Uso prático de marcadores moleculares para sele??o assistida no melhoramento de uvas de mesa apirênicas

摘要

The inheritance of seedlessness in grapevine is based on a complex genetic system, where the expression of three independently inherited recessive genes is controlled by a dominant regulator gene (sdI). In a previous study, Lahogue et al. (1998) identified a random amplified polymorphic DNA marker, tightly linked to the sdI gene and developed a codominant SCAR (Sequence Characterized Amplified Region) marker named SCC8, that allows the distinction of seeded and seedless plants in a segregating progeny. The aim of the present work was to evaluate the usefullness of the SCAR marker SCC8 for assisted selection of the seedlessness character in grape breeding. According to our results, the use of the SCC8 marker is economically viable and the consequences of its use in the grapevine breeding program at Embrapa Uva e Vinho are discussed.