Development of inflorescence primordia in Vitis vinifera L. cv. Chardonnay from hot and cool climates

Watt, Andrea M.; Dunn, Gregory; May, P.; Crawford, Seth; Barlow, E. W. R.

doi:10.1111/j.1755-0238.2008.00006.x

Cited by 40 publications

(28 citation statements)

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“…Concurrently, initiation of the second inflorescence within a latent bud is reported to start once initiation of the basal inflorescence is complete (Swanepoel andArcher 1988, Morrison 1991). This is supported by previous research that has demonstrated that around the time of fruitset, the development of the IP within latent buds is susceptible to environmental (Baldwin 1964, Watt et al 2008 and to endogenous conditions, such as the CHO status of the vine (Candolfi-Vasconcelos and Koblet 1990, Bennett et al 2005). Literature indicates that floral initials are formed shortly before budbreak (Pratt 1971, Srinivasan and Mullins 1981, Morrison 1991.…”

Section: Discussionsupporting

confidence: 57%

“…Our data further indicate that primordia and outer arm initiation was complete in nodes one to five before the leaf removal treatments were applied at fruitset. This is supported by previous research that has demonstrated that around the time of fruitset, the development of the IP within latent buds is susceptible to environmental (Baldwin 1964, Watt et al 2008 and to endogenous conditions, such as the CHO status of the vine Koblet 1990, Bennett et al 2005).…”

Section: Discussionsupporting

confidence: 56%

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Effects of shoot girdling and/or periodic leaf removal on inflorescence primordia initiation and development inVitis vinifera L. cv. Sauvignon Blanc

Eltom

Winefield

Trought

2014

Australian Journal of Grape and Wine Research

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Background and Aims Inflorescence primordia (IP) development starts in the buds of leaf axils approximately 12 months before flowering. Primordia initiation progresses acropetally as the shoot develops, although little is known about the timing of initiation at different node positions up the developing shoot. Girdling and/or leaf removal treatments were used to investigate the timing of development and structure of grapevine inflorescences at different positions along the shoot. Methods and Results Individual shoots were either girdled at their base shortly after fruitset or left intact. Leaves were then removed from those shoots on four occasions from the time of girdling to natural leaf fall in the autumn. Dormant latent buds from treatment shoots (shoot node positions one to ten) were grown as single‐node cuttings (SNCs) in a glasshouse, and the inflorescence number per SNC and their architecture were scored on developing shoots. Girdling fully leafed shoots increased the proportion of SNC basal inflorescences with an outer arm but had no effect on the number of inflorescences per SNC. Girdled shoots that had their leaves removed at 0 or 4 weeks post‐fruitset had a decrease in inflorescence number per SNC and outer arm development from nodes six and eight, respectively. Conclusions Inflorescence initiation before node positions six and eight was complete by the time girdling and leaf removal treatments were applied, and initiation at nodes six and eight occurred at 0 and 4 weeks post‐fruitset. The development of the apical IP and the outer arm of the basal IP appears to occur at the same time. Significance of the Study This study presents novel information regarding the timing of IP initiation at different positions along the developing shoot, including the initiation and development of the outer arm. Also, the formation of an outer arm is shown to be sensitive to girdling and/or leaf removal.

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Section: Discussionsupporting

confidence: 57%

Section: Discussionsupporting

confidence: 56%

Effects of shoot girdling and/or periodic leaf removal on inflorescence primordia initiation and development inVitis vinifera L. cv. Sauvignon Blanc

Eltom

Winefield

Trought

2014

Australian Journal of Grape and Wine Research

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“…Spatial variability in environmental conditions may lead to tenfold differences in grape yield within single vineyard management blocks (Bramley and Hamilton 2004). Canopy related factors can affect yield at different stages of reproductive development: at inflorescence initiation (May 1965;Sanchez and Dokoozlian 2005;Watt et al 2008), during flowering (May 2004), during berry growth and maturation (Ollat et al 2002), and close to harvest (Smithyman et al 1998). Winegrape quality has been shown to exhibit high levels of spatial variability (Bramley 2005), which can also be related to canopy conditions (Smart and Robinson 1991).…”

Section: Introductionmentioning

confidence: 98%

Within-season temporal variation in correlations between vineyard canopy and winegrape composition and yield

et al. 2010

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Remote optical imaging can rapidly acquire information describing spatial variability in vineyard block performance. Canopy characteristics were derived from very high spatial resolution (0.25 m) optical imagery of a Cabernet Sauvignon vineyard acquired at various canopy growth stages. Within-season changes to correlation coefficients between vineyard canopy and ultimate composition and yield of harvested fruit were then investigated. Canopy area and density were observed to have significant relationships with yield and fruit quality indicators including berry size, anthocyanins and total phenolic content, but less significant relationships with total soluble solids. The strength and type of correlation varied with canopy growth stage. For anthocyanins and total phenolic content, correlations varied from non-significant before flowering to negative after flowering. For berry weight and yield, correlations varied from negative before flowering to positive after flowering. For total soluble solids, there were some significant relationships but no clear temporal pattern. The results confirm that remote sensing is a useful tool to determine spatial variability in fruit composition and yield. However, both the timing of image acquisition and the way in which canopy is quantified are important determinants of the direction and strength of correlations with fruit composition and yield.

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“…The development of an IP into its inner and outer arm (the primary branch point on the main rachis) components is also sensitive to temperature during IP initiation (Watt et al 2008). 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).…”

Section: Introductionmentioning

confidence: 97%

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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Development of inflorescence primordia in Vitis vinifera L. cv. Chardonnay from hot and cool climates

Cited by 40 publications

References 10 publications

Effects of shoot girdling and/or periodic leaf removal on inflorescence primordia initiation and development inVitis vinifera L. cv. Sauvignon Blanc

Effects of shoot girdling and/or periodic leaf removal on inflorescence primordia initiation and development inVitis vinifera L. cv. Sauvignon Blanc

Within-season temporal variation in correlations between vineyard canopy and winegrape composition and yield

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

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