Table 1.

A summary of reported effects of deficit irrigation on main fruit quality variables

Quality variable	Effect of deficit irrigation	Reference
SSC	+	Nuruddin et al., 2003; Machado and Oliveira, 2005; Favati et al., 2009; Patanè and Cosentino, 2010; Patanè et al., 2011; Wang et al., 2011; Chen et al., 2013, 2014; Kuşçu et al., 2014; Albert et al., 2016a; Lahoz et al., 2016; Nangare et al., 2016; Guida et al., 2017; Wang et al., 2017; Zhang et al., 2017; Diouf et al., 2018
	/	Nuruddin et al., 2003; Patanè and Cosentino, 2010; Chen et al., 2013, 2014; Kuşçu et al., 2014; Wang et al., 2011; Wang et al., 2017; Zhang et al., 2017
	–	Albert et al., 2016a; Diouf et al., 2018
Sugars	+	Veit-Köhler et al., 1999; Wang et al., 2011; Chen et al., 2013, 2014; Ripoll et al., 2016b; Van de Wal et al., 2016;
	/	Wang et al., 2011; Chen et al., 2013, 2014; Ripoll et al., 2016b
	–	Ripoll et al., 2016b
Organic acids	+	Wang et al., 2011; Chen et al., 2013, 2014; Ripoll et al., 2016b
	/	Wang et al., 2011; Chen et al., 2013, 2014; Shao et al., 2015; Ripoll et al., 2016b; Van de Wal et al., 2016
	–	Shao et al., 2015; Wang et al., 2017
Sugar/acid ratio	+	Wang et al., 2011; Chen et al., 2013, 2014; Shao et al., 2015
	/	Wang et al., 2011; Chen et al., 2013, 2014; Wang et al., 2017; Shao et al., 2015; Wang and Xing, 2017
Vitamin C	+	Favati et al., 2009; Patanè and Cosentino, 2010; Patanè et al., 2011; Wang et al., 2011; Chen et al., 2013, 2014; Shao et al., 2015; Bogale et al., 2016; Zhang et al., 2017; Martí et al., 2018
	/	Veit-Köhler et al., 1999; Favati et al., 2009; Patanè and Cosentino, 2010; Wang et al., 2011; Chen et al., 2013, 2014; Shao et al., 2015; Wang et al., 2017; Ripoll et al., 2016b; Guida et al., 2017; Zhang et al., 2017; Martí et al., 2018
	–	Patanè and Cosentino, 2010; Bogale et al., 2016
Lycopene	+	Favati et al., 2009; Wang et al., 2011; Bogale et al., 2016
	/	Wang et al., 2011; Ripoll et al., 2016b; Martí et al., 2018
	–	Riggi et al., 2008; Barbagallo et al., 2013; Bogale et al., 2016; Ripoll et al., 2016b
β-carotene	+	Favati et al., 2009; Pernice et al., 2010; Bogale et al., 2016,Ripoll et al., 2016b
	/	Riggi et al., 2008; Bogale et al., 2016; Ripoll et al., 2016b; Martí et al., 2018
	–	Riggi et al., 2008; Pernice et al., 2010; Atkinson et al., 2011
Firmness	+	Patanè and Cosentino, 2010; Wang et al., 2011; Chen et al., 2013, 2014; Shao et al., 2015; Nangare et al., 2016
	/	Patanè and Cosentino, 2010; Wang et al., 2011; Zheng et al., 2013; Chen et al., 2013, 2014; Van de Wal et al., 2016; Zhang et al., 2017
	–	Ozbahce and Tari, 2010; Zheng et al., 2013; Zhang et al., 2017
BER	+	Nuruddin et al., 2003; Taylor et al., 2004;
	/	Nuruddin et al., 2003; Machado and Oliveira, 2005

Positive (+), null (/), and negative (–) effects were based on whether there was a significant difference between the deficit irrigation treatment and the well-irrigated control. Sugars, organic acids, vitamin C, lycopene, and β-carotene were measured on a fresh or dry weight basis.