How Rootstocks Impact the Scion Vigour and Vine Performance of Vitis vinifera L. cv. Tempranillo
Table 6
Mean values for leaf optical indices measured early-mid morning at flowering and veraison for four rootstocks and from 2018 to 2020 and their interactions.
Chlorophyll index
Flavonol index
NBI
Leaf N (g/100g DM)
Flowering
Veraison
Flowering
Veraison
Flowering
Veraison
Flowering
Veraison
Two-way ANOVA
Rootstock
1103-P
34.73 b
42.51 ab
1.66
1.78 b
21.46 a
24.51 a
3.29 a
2.41 ba
110-R
34.08 b
42.81 a
1.71
1.83 ab
20.30 b
23.82 ab
3.17 b
2.35 cb
161-49C
34.55 b
41.77 b
1.66
1.86 a
21.45 a
22.88 bc
3.08 cb
2.45 a
41B
36.44 a
39.28 c
1.68
1.82 ab
22.19 a
22.35 c
3.02 c
2.31 c
Year
2018
37.18 a
37.54 c
1.62 c
1.72 c
24.14 a
22.75 b
3.06 b
2.46 a
2019
35.61 b
44.68 a
1.75 a
1.81 b
20.51 b
25.20 a
2.92 c
2.27 b
2020
32.10 c
42.57 b
1.66 b
1.92 a
19.44 c
22.28 b
3.43 a
2.40 a
R
∗∗∗
∗∗∗
ns
∗∗∗
∗∗∗
∗∗∗
∗∗∗
∗∗∗
Y
∗∗∗
∗∗∗
∗∗∗
∗∗∗
∗∗∗
∗∗∗
∗∗∗
R Y
∗∗∗
ns
ns
ns
∗∗∗
ns
One-way ANOVA
2018
1103-P
35.67 c
38.07 ab
1.61
1.70 ab
23.37 b
23.32
3.14
2.52 ba
110-R
36.50 bc
38.89 a
1.68
1.72 ab
22.68 b
23.11
3.10
2.35 b
161-49C
38.79 a
37.18 ab
1.57
1,80 a
26.03 a
21.35
3.02
2.63 a
41B
37.77 ab
36.02 b
1.61
1.67 b
24.48 ab
23.21
2.98
2.35 b
2019
1103-P
35.23 b
46.60 a
1.76
1.75 b
20.13 b
27.30 a
3.05 a
2.22 b
110-R
34.96 b
45.54 ab
1.77
1.81 ab
19.84 b
25.60 b
2.92 ba
2.30 ba
161-49C
34.09 b
44.58 b
1.74
1.84 a
19.73 b
24.62 bc
2.90 ba
2.36 a
41B
38.19 a
41.95 c
1.72
1.83 ab
22.36 a
23.25 c
2.81 b
2.21 b
2020
1103-P
33.28 a
42.84 a
1.61 b
1.88 b
20.87 a
23.05 a
3.67 a
2.48
110-R
30.89 b
43.99 a
1.68 a
1.95 a
18.46 b
22.74 a
3.50 ba
2.40
161-49C
30.89 b
43.54 a
1.66 ab
1.93 a
18.69 b
22.67 a
3.32 cb
2.36
41B
33.39 a
39.87 b
1.70 a
1.95 a
19.80 ab
20.58 b
3.25 c
2.36
,, and indicate significant differences at the 0.05, 0.01, and 0.001 levels of probability, respectively. In each column and for each factor or interaction, different letters indicate significant differences according to Duncan’s multiple range test at the 95% confidence level. DM: dry mass and NBI: nitrogen balance index.
