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

Table 2

Mean values of vegetative development parameters for four rootstock, year, and from 2018 to 2020 separately.

	NBB	NMS	PM (kg vine^−1)	MSM (g)	Ravaz index
Two-way ANOVA
Rootstock
1103-P	5.03	10.73 b	0.84 a	69.4 a	6.62 b
110-R	5.50	12.05 a	0.59 b	42.6 b	8.43 b
161-49C	5.15	11.07 ba	0.52 b	42.7 b	8.47 b
41B	5.45	11.80 a	0.33 c	26.0 c	11.24 a
Year
2019	5.38	9.91	0.39 b	33.38 b	8.60
2020	5.19	12.91	0.75 a	56.94 a	8.78
R	ns		^∗∗∗	^∗∗∗
Y	ns	^∗∗∗	^∗∗∗	^∗∗∗	ns
R·Y	ns	ns		ns	ns
One-way ANOVA
2019
1103-P	5.1	9.0 b	0.575 a	52.7 a	6.13 b
110-R	5.5	10.3 ba	0.386 ba	30.8 ba	7.98 ba
161-49C	5.3	9.8 ba	0.358 b	30.7 b	9.21 ba
41B	5.7	10.7 a	0.242 c	19.3 c	11.08 a
2020
1103-P	5.0	12.5	1.100 a	86.0 a	7.10 b
110-R	5.5	13.9	0.797 b	54.3 b	8.88 ba
161-49C	5.1	12.4	0.690 b	54.7 b	7.73 ba
41B	5.3	12.9	0.427 c	32.7 c	11.40 a

^∗, , 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. Regarding the year effect, for each factor, different letters denote statistically significant differences between years based on the Student’s t-test. NBB: number of shoots arising from basal buds/vine, NMS: number of main shoots/vine, MSM: main shoot mass (g), PM: pruning mass (kg/vine), and Ravaz Index: yield/pruning mass.