“…Detection of QTLs in grapes has mostly been used to investigate the genes associated with various complex traits, such as resistance to diseases and blights like powdery and downy mildew and Pierce's disease (Fischer et al 2004, Barker et al 2005, Merdinoglu et al 2005, Riaz et al 2006, 2009, 2011, Welter et al 2007, Hoffmann et al 2008, Bellin et al 2009, Marguerit et al 2009, Zhang et al 2009, Blasi et al 2011, Moreira et al 2011). It has also been used to search for genes related to quality traits such as berry size and seedlessness (Doligez et al 2013, Cabezas et al 2006, Mejía et al 2007, 2011, Costantini et al 2008), phenology (Duchêne et al 2012, Grzeskowiak et al 2013), anthocyanin concentration and tannins (Fournier‐Level et al 2009, Huang et al 2012), aroma (Eibach et al 2003, Battilana et al 2009, Duchêne et al 2009), fertility (Doligez et al 2010), bunch architecture (Correa et al 2014), firmness (Correa et al 2016, Jiang et al 2020) as well as timing and duration of flowering, veraison and ripening (Fischer et al 2004, Costantini et al 2008, Marguerit et al 2009, Zhao et al 2016). Recently QTLs related to sugar and organic acid concentration in grape have been reported using different types of populations.…”