A functional association in Vitis vinifera L. cv. Cabernet Sauvignon between the extent of primary branching and the number of flowers formed per inflorescence

Dunn, Gregory; Martin, Stephen R.

doi:10.1111/j.1755-0238.2007.tb00239.x

Cited by 36 publications

(36 citation statements)

References 8 publications

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“…Thus, the closer these volumes are, the more compact is the bunch (Sepahi 1980, Shavrukov et al 2004). Berry number depends on the number of flowers present in the inflorescence and on the proportion that sets successfully and is retained until harvest (Dunn and Martin 2007). According to our results, the number of berries per bunch plays a leading role in bunch compactness, having a positive relationship with this trait.…”

Section: Discussionmentioning

confidence: 51%

“…Consequently, those morphoagronomic variables that were consistently retained in the analyses of the 2011, 2012 and 2013 data arise as the best set of predictors. Among them, the variables 1RmLe, BuLe and ToBeBu may be considered as primary and independent variables, whereas BuWe is a derived variable, and essentially arises from the number of berries of the bunch and its average mass (Dunn and Martin 2007). Moreover, they obtained high and similar absolute standardised coefficients in the discriminant functions over the years.…”

Section: Linear Discriminant Analysismentioning

confidence: 96%

“…Its structure has been fully described (May 2000, Lebon et al 2008, Vasconcelos et al 2009), and it is morphologically characterised by its conical structure because of its multiple and progressive branching. The second stage occurs after dormancy (second season) and includes the elongation of the rachis and branches and the differentiation of secondary and tertiary branches, ending in the formation of floral meristems and finally individual flowers (Dunn and Martin 2007, Carmona et al 2008, Tahyaoui et al 2008). Inflorescence morphogenesis occurs in two stages, separated by a dormant period.…”

Section: Introductionmentioning

confidence: 99%

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Multicultivar and multivariate study of the natural variation for grapevine bunch compactness

Tello

Aguirrezábal

Hernáiz

et al. 2015

Australian Journal of Grape and Wine Research

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Background and Aims Grapevine bunch compactness is an important trait with impact on fruit quality, mainly affecting the susceptibility to bunch rot. Many and different variables have been reported to have a significant influence on the variation of bunch compactness in particular cultivars, but little is known about the role of such variables in a wider framework. The aim of this work was to identify and weight the features responsible for the natural variation in bunch compactness in a large and diverse grapevine collection. Methods and Results Different statistical tests were sequentially applied to select the determining variables most influencing bunch compactness. Significant and low correlation was obtained for most of the variables studied for three consecutive seasons, confirming the multifactorial nature of this trait. Multivariate analyses indicated that there are three groups of variables with a significant influence on bunch compactness. Two groups, represented by the total number of berries per bunch and by the length of the first ramification of the bunch, are major factors responsible for the trait variation, whereas berry dimensions have a secondary role. Conclusions Bunch compactness is defined by the difference between its morphological (apparent) volume and its actual (solid) volume. The results showed that the actual volume is mainly determined by the total number of berries, whereas the morphological volume also depends on its spatial arrangement, determined by the architecture of the rachis. Significance of the Study This is the first multiyear study of bunch compactness at a multicultivar level, and it has allowed the selection and weighting of the main variables affecting the trait. These variables are suitable targets to study the underlying genetics of the trait.

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Section: Discussionmentioning

confidence: 51%

Section: Linear Discriminant Analysismentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

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Multicultivar and multivariate study of the natural variation for grapevine bunch compactness

Tello

Aguirrezábal

Hernáiz

et al. 2015

Australian Journal of Grape and Wine Research

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“…It has also been demonstrated that branching of IP continues after initiation until dormancy in season one (Pratt 1971, Srinivasan and Mullins 1981, Morrison 1991, where the degree of branching may be influenced by temperature during this period (Palma andJackson 1981, Dunn andMartin 2007). The research mentioned above, however, typically examines inflorescence structures as a whole, leaving a gap in the literature concerning the influence of temperature on outer arm development.…”

Section: Introductionmentioning

confidence: 91%

Effect of pruning system, cane size and season on inflorescence primordia initiation and inflorescence architecture ofVitis vinifera L. Sauvignon Blanc

Eltom

Winefield

Trought

2014

Australian Journal of Grape and Wine Research

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Background and Aims: Inflorescence numbers per shoot and their size vary between seasons and may, within a season, be affected by pruning systems, bud position along a cane and the size of the cane. A grapevine inflorescence typically has a main rachis and a tendril, which may or may not have flowers (an outer arm). The aim of this study was to identify the effect of these factors during inflorescence primordia (IP) initiation on the resulting number of inflorescences per shoot and their architecture. Methods and Results: Two-cane, four-cane and spur-pruned Sauvignon Blanc vines were used to investigate changes in inflorescence number, distribution and architecture over two growing seasons. The pruning system had no effect on the inflorescence number per shoot (fruitfulness), inflorescence architecture or distribution at a given cane node number. There were differences in inflorescence number and structure between the seasons, likely associated with air temperatures during primordia initiation. A warmer initiation period was associated with an increase in the occurrence of flowers on the outer arm and lower positions of the basal inflorescences (shoot bud position). An increase in cane cross-sectional area correlated to an increase in fruitfulness and an increase in the average occurrence of an outer arm with flowers along a cane. Conclusions: Inflorescence number, the position of the basal inflorescence on the developing shoot and the development of the outer arm are affected by the bud position of the shoot along a cane, the cross-sectional area of the cane and the season. Our results suggest that initiation of IP may occur at the same time for all bud positions along a shoot, so long as they are free from inhibiting factors. Significance of the Study: Cane selection can be used to modify inflorescence number and architecture and thus the potential yield of grapevines.

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“…Thus, regarding the number of clusters, there might be an influence on the next productive cycle number of flowers, as a result of the effects on the early stages of shoots inflorescence from the current cycle (Dunn and Martin, 2007).…”

Section: Discussionmentioning

confidence: 99%

Shoot topping of ‘Niagara Rosada’ grapevine grafted onto different rootstocks

Silva¹,

Paiva²,

Pimentel³

et al. 2018

Aust J Crop Sci

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Vineyard cultural practices may influence amount of sugars, acids, phenolic compounds and antioxidant activity of grapes. Thus, the purpose of this study was to evaluate the effect of different shoot topping levels on the chemical characteristics of the grapes during its maturation, yield and the physicochemical characteristics and phenolic compounds of 'Niagara Rosada' grapevine grafted onto different rootstocks. The experiment was conducted in a 2-year-old vineyard of Niagara Rosada cultivar in Southeast of Brazil. The vines were trained on a unilateral cordon system in a vertical shoot positioning. The manual shoot topping was carried by leaving 6, 7, 8 or 9 leaves above the last cluster. Vines were topped 60 days after pruning, when the vines were in the beginning of bunch closure. All vines were grafted onto 'IAC 766' and 'IAC 572' rootstocks. Fruit maturation curve, yield and physicochemical grapes characteristics were analyzed to determine the effects of shoot topping levels and rootstocks. The rootstocks and the different shoot topping levels did not influence the yield, productivity and cycle duration of 'Niagara Rosada' grapevines. Larger and heavier clusters and berries were harvested from vines grafted on 'IAC 766' rootstock. However, grapes harvested from grapevines grafted on 'IAC 572' rootstock presented higher total anthocyanins content. The shoot topping carried out with 7 or 8 leaves above the latest cluster provided higher sugars, total polyphenols content and antioxidant activity.

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A functional association in Vitis vinifera L. cv. Cabernet Sauvignon between the extent of primary branching and the number of flowers formed per inflorescence

Cited by 36 publications

References 8 publications

Multicultivar and multivariate study of the natural variation for grapevine bunch compactness

Multicultivar and multivariate study of the natural variation for grapevine bunch compactness

Effect of pruning system, cane size and season on inflorescence primordia initiation and inflorescence architecture ofVitis vinifera L. Sauvignon Blanc

Shoot topping of ‘Niagara Rosada’ grapevine grafted onto different rootstocks

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