The primary use of rootstocks is for pest resistance,
especially to phylloxera (Daktulosphaira vitifoliae
Fitch.). However, there is also an important role for
rootstock compatibility with European vines (Ri-
chards 1983; Vršič et al. 2004) and adaptation to the
soil, resulting in the development of the root system
(Morano & Kliewer 1994), nutrient absorption
(Fardossi et al. 1995), and vulnerability to drought
(Himelrick 1991; Kocsis et al. 1998; Keller et
al. 2001a,b; Satisha et al. 2010). The interactions
between rootstocks and varieties have an important
effect on the varieties vigour and productivity (Boselli
et
al.
1992; Ferroni
& Scalabrelli
1995;
Keller
et
al.
2001a,b).
Intensive
vegetative
growth
of
the
vine
influences
the
yield
(Hoover
et
al.
2004),
mineral
content
in leaves
(Lehoczky
& Kocsis
1998),
health
condition,
and
chemical
composition
of
the
grape,
mainly with
regard
to
sugar,
free
amino
nitrogen
(FAN),
and
total
acidity
content
(Kubota
The primary use of rootstocks is for pest resistance,especially to phylloxera (Daktulosphaira vitifoliaeFitch.). However, there is also an important role forrootstock compatibility with European vines (Ri-chards 1983; Vršič et al. 2004) and adaptation to thesoil, resulting in the development of the root system(Morano & Kliewer 1994), nutrient absorption(Fardossi et al. 1995), and vulnerability to drought (Himelrick 1991; Kocsis et al. 1998; Keller et al. 2001a,b; Satisha et al. 2010). The interactionsbetween rootstocks and varieties have an importanteffect on the varieties vigour and productivity (Boselli etal.1992; Ferroni& Scalabrelli1995;Kelleretal.2001a,b).Intensivevegetativegrowthofthevineinfluencestheyield(Hooveretal.2004),mineralcontentin leaves(Lehoczky& Kocsis1998),healthcondition,andchemicalcompositionofthegrape,mainly withregardtosugar,freeaminonitrogen(FAN),andtotalaciditycontent(Kubota
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