A Major QTL is associated with berry grape texture characteristics

Berry texture and berry skin mechanical properties are traits with high agronomic relevance because they related to quality parameters marketing requirements of wine, table, raisin grapes. Searching for QTLs linked texture, an F1 population 152 individuals their parents were used in this study. These plants obtained crossing Raboso Veronese, a seeded black wine grape cultivar, Sultanina, seedless white variety, especially raisins. Density flotation was applied sorting improving the management many highly variable genotypes, irrespective quantification specific molecule classes. Berries evaluated technological ripeness properties. Texture taken as raw data normalised on dimensions, i.e., diameter or surface volume. SSR molecular markers produce genetic map major QTL found chromosome 18 firmness showing phenotypical explained variance higher than 60 %, resilience, springiness cohesiveness 50 %. Surprisingly, showed be associated VviAGL11, main gene seedlessness. VviAGL11 expression co-expression profiling during ripening using available information; suggested role ripe berry.List Abbreviations:ABW, average weightBR, resilienceBR_diam, resilience diameterBR_sur, surfaceBR_vol, volumeBS_ratio, springinessBS_ratio_diam, diameterBS_ratio_sur, surfaceBS_ratio_vol, volumeBCo, cohesivenessBCo_diam, diameterBCo_sur, surfaceBCo_vol, volumeBH, hardnessBH_diam, hardness diameterBH_sur, surfaceBH_vol, volumeBG, gumminessBG_diam, gumminess diameterBG_sur, surfaceBG_vol, volumeBCh_ratio, chewinessBCh_ratio_diam, chewiness diameterBCh_ratio_sur, surfaceBCh_ratio_vol, volumeFsk, break forceWsk, energyEsk, resistance axial deformationSpsk, thickness