Performance of juice and wine grape cultivars in different training systems

Pedro Júnior, Mário José; Hernandes, José Luiz; Moura, Mara Fernandes

doi:10.1590/0100-29452018055

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Revista Brasileira de Fruticultura

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Fitotecnia • Rev. Bras. Frutic. 40 (6) • 2018 • https://doi.org/10.1590/0100-29452018055 copy

Performance of juice and wine grape cultivars in different training systems

Desempenho de cultivares de uva para suco e vinho em diferentes sistemas de sustentação

Authorship SCIMAGO INSTITUTIONS RANKINGS

Abstract

The increase of rural tourism activities has led growers to use different grape cultivars for the production of wine and/or juice. Thus, the aim of this study was to evaluate the phytotechnical characteristics of grapevines and physicochemical characteristics of grape must obtained for Bordô, Isabel Precoce, BRS Violeta, Isabel and Concord cultivars in different training systems: vertical shoot position; Y-shaped trellis and V-shaped trellis with double spur cordon. The experimental design was randomized blocks for comparison of cultivars within each training system and analysis of the main components for productivity variables was carried out. BRS Violeta cultivar showed higher bunch weight values regardless of training system. Bordô cultivar showed lower yield values and soluble solids content in comparison to other cultivars. Isabel and Isabel Precoce cultivars in the evaluated training systems showed higher soluble solids content. Principal component analysis allowed verifying that in Y-shaped trellis and V-shaped trellis with double spur cordon training systems, cultivars were related to higher yield.

Index terms
grapevine; rustic grape; yield; soluble solids

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[TFN0101] ^*
Means followed by the same letter in columns do not differ at the 5% level by the Tukey test within the same training system.

[TFN0102] ^VSP=
vertical shoot position; Y= Y-shaped trellis, CD= V-shaped trellis with double spur cordon.

Training system	Cultivar	Bunch weight (g)	Number of bunches	Number of branches	Yield (t ha^-1)	Soluble solids (°Brix)	Titratable acidity (mEq.L^-1)		Maturation index
	Isabel Precoce	117.4 cd	28.4 a	17.6 a	16.63 b	18.5 a	76.5 bc	33.9 b
	Bordô	93.3 d	23.2 b	17.4 a	10.75 d	15.1 c	95.7 a	25.0 c
VSP	BRS Violeta	164.1 a	16.8 c	16.4 a	13.69 c	17.2 b	84.0 b	27.7 c
	Isabel	126.0 bc	28.5 a	16.9 a	17.70 ab	18.3 a	67.0 cd	38.0 ab
	Concord	148.4 ab	27.1 a	17.1 a	19.61 a	16.9 b	58.5 d	39.5 a

	Isabel Precoce	126.7 c	37.8 b	21.3 b	23.06 b	16.7 a	64.0 b	35.6 a
	Bordô	100.8 d	31.6 c	18.7 c	15.41 c	15.1 b	66.5 b	34.7 a
Y	BRS Violeta	192.5 a	22.6 d	18.3 c	22.04 b	16.7 a	81.5 a	28.0 b
	Isabel	140.3 bc	44.7 a	26.2 a	30.58 a	17.3 a	67.3 b	34.8 a
	Concord	153.3 b	40.1 ab	21.0 b	29.09 a	16.9 a	66.0 b	35.6 a

	Isabel Precoce	122.5 bc	53.3 a	28.1 a	31.87 a	17.7 a	72.0 a	33.6 ab
	Bordô	102.4 c	43.5 b	26.7 a	22.17 b	14.6 c	81.0 a	26.8 c
CD	BRS Violeta	186.2 a	31.7 c	27.0 a	29.39 a	16.5 b	79.2 a	29.0 bc
	Isabel	134.6 b	50.6 ab	27.0 a	32.97 a	17.6 a	71.6 a	34.6 a
	Concord	140.9 b	47.4 ab	26.7 a	32.40 a	16.7 b	60.5 b	37.8 a

Variables	1	2	3	4
MFC	- 0.308	0.916	0.036	0.399
NR	0.585	0.008	0.809	- 0.048
NC	0.579	-0.260	-0.376	0.675
Productivity	0.567	0.307	-0.449	- 0.619
Eigenvalues	2.676	1.188	0.128	0.008
Difference	1.488	1.060	0.119	---
Proportion (%)	66.89	29.69	3.20	0.21
Accumulated (%)	66.89	96.59	99.79	100.00