How Rootstocks Impact the Scion Vigour and Vine Performance of Vitis vinifera L. cv. Tempranillo

Table 5

Correlations between leaf macro and micronutrient concentrations and leaf optical indices at flowering and veraison in Tempranillo scions grafted onto four selected rootstocks during three seasons.

N

P

K

Ca

Mg

Fe

Mn

Zn

Cu

B

Na

C

Chl

Flav

NBI

Chl

−0.83^∗∗

−0.67^∗∗

−0.67^∗∗

0.68^∗∗

0.45

0.62^∗∗

0.57^∗∗

−0.06

0.09

0.02

−0.10

−0.14

1

Flav

−0.66^∗∗

−0.60^∗∗

−0.51

0.50

0.38

0.17

0.43

−0.27

0.21

0.13

−0.27

−0.18

0.61^∗∗

1

NBI

−0.57^∗∗

−0.39

−0.52^∗∗

0.46

0.29

0.70^∗∗

0.44

0.04

0.05

−0.08

0.05

−0.05

0.77^∗∗

−0.02

1

n = 24; Values indicate Pearson’s coefficient of correlation. and ^∗∗: . Chl: chlorophyll, Flav: flavonol, and NBI: nitrogen balance index.