Dormancy and Cold Hardiness Transitions in Winegrape Cultivars Chardonnay and Cabernet Sauvignon

Cragin, Jacob; Serpe, Marcelo D.; Keller, Markus; Shellie, Krista C.

doi:10.5344/ajev.2016.16078

Cited by 43 publications

(51 citation statements)

References 23 publications

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“…Currently, the real-time monitoring system of CH status carried out by Washington State University confirms that sort of curve in different V. vinifera varieties (http://wine.wsu.edu/extension/weather/coldhardiness/). Most of this research has been performed in sites exposed to a low TA and where sometimes extreme Tmin conditions occur (Proebsting et al, 1980;Mills et al, 2006;Cragin et al, 2017). However, there are other studies that support the notion that CH fluctuates Fig.…”

Section: Cold Hardiness Status and Its Relationship With Thermal Historymentioning

confidence: 99%

Thermal history parameters drive changes in physiology and cold hardiness of young grapevine plants during winter

Antivilo

Paz

Echeverría

et al. 2018

Agricultural and Forest Meteorology

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Vitis vinifera is mainly cultivated in temperate areas, where seasons are well defined and winter conditions might be severe. To survive under these conditions during the dormant season, grapevines sense environmental parameters to trigger different protective mechanisms that lead to cold hardiness (CH). Crop yield and sustainability will be determined according to the level of CH reached in each organ. Moreover, different cultivars of V. vinifera exhibit different behavior throughout the dormant season, attaining a different status of CH. However, there is scarce information concerning how the same cultivar behaves under contrasting thermal environments. The aim of our research was to unveil how CH varies in trunks of the same cultivar under two contrasting environments and define which are the main thermal and biochemical parameters involved in this process. We submitted 2-year old plants of the same clone of cv. Malbec to two different thermal conditions: natural winter (control) and artificially warm winter (treatment). CH status, thermal and biochemical parameters in trunks were measured periodically over the dormant season, and this experiment was repeated for three years. Our results suggest that grapevine trunks subjected to a different environment reach dissimilar CH status, except at the end of winter. In addition, we determined that daily minimum temperature is the main thermal parameter that drives changes in CH. Also, we found that the total soluble sugars have the greatest relative weight in determining the CH compared with the other compounds evaluated. These results have practical implications in the establishment of vineyards for new growing regions. Moreover, with rising minimum temperature predicted by climate change scenarios, grapevines may be more vulnerable to cold events during the dormant season.

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Section: Cold Hardiness Status and Its Relationship With Thermal Historymentioning

confidence: 99%

Thermal history parameters drive changes in physiology and cold hardiness of young grapevine plants during winter

Antivilo

Paz

Echeverría

et al. 2018

Agricultural and Forest Meteorology

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“…Pagter & Arora (2013) suggest that deacclimation rates are not linear, and that a lag phase may occur during initial exposure to warm temperatures. The initial lag phase might explain the differences in deacclimation rates measured in Cragin, Serpe, Keller, & Shellie (2017) compared to those reported in this study, as they only evaluated deacclimation for 4 days. This may also suggest why they had differences in rates across the years, although this may also be an effect of different chill accumulation between the two years in their study.…”

Section: Discussionmentioning

confidence: 56%

“…In a review of photosynthesis responses to temperature, Berry & Björkman (1980) showed that the phase of exponential increase in photosynthesis rate can end at temperatures as low as 10 °C and as high as 40 °C, and that both the rates and the optimum temperatures are also affected by the temperature regime in which plants are grown. For deacclimation rates in grapevine buds, Cragin et al (2017) suggested an effect of the field LTE (or the intercept) on the deacclimation rate, which would indicate an effect of the environment. We did not attempt to use field LTE as a factor in our calculations; however, we expect that it would not greatly impact k deacc : both 860 and 1580 chill units had similar field LTEs, but very different k deacc (Fig.…”

Section: Discussionmentioning

confidence: 99%

Kinetics of winter deacclimation in response to temperature determines dormancy status and explains budbreak in differentVitisspecies

Kovaleski

Reisch

Londo

2018

Preprint

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2.AbstractBud dormancy and cold hardiness are critical adaptations for surviving winter cold stress for temperate perennial plant species, with shifting temperature-based responses during the winter. The objective of this study was to uncover the relationship between dormancy transition (chilling requirement) and temperature on the loss of cold hardiness and budbreak. Dormant cuttings of Vitis vinifera, V. aestivalis, V. amurensis, and V. riparia were examined to determine the relationship between chilling requirement and temperature on rate of deacclimation (kdeacc). Differential thermal analysis was used to determine kdeacc using mean low temperature exotherms. Effect of chill was evaluated as the deacclimation potential (ψdeacc), which was the change in kdeacc due to chill accumulation. Budbreak was also evaluated in fully chilled buds at different temperatures. Results indicate that ψdeacc varies dependent on dormancy state, following a logarithmic response to chill accumulation. The effect of temperature on kdeacc was exponential at low and logarithmic at high temperatures. The combination of ψdeacc and kdeacc resulted in good prediction of deacclimation. Budbreak phenology was also explained by differences in kdeacc. Deacclimation rates can be used as a quantitative determinant of dormancy transition and budbreak, and to refine models predicting effects of climate change.

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“…However, the lack of a statistical basis for analyzing single-node cuttings has resulted in inconsistent criteria and arbitrary thresholds for determining the endodormancy stage [ 7 , 9 ]. Buds of single-node cuttings of wine grapes under forcing have been classified as endodormant when required between 30 and 50 days to reach 50% budbreak [ 10 , 11 ], while in a different study endodormancy was identified as the period when 50% of budbreak was reached after 60 days under forcing [ 12 ]. Other studies have reported endodormancy as the period when 50% budbreak was reached after 30 days under forcing based on previous reports for apple, sour cherry and peach [ 13 , 14 ].…”

Section: Introductionmentioning

confidence: 99%

“…Recent studies have used methods based on time-to-event data or survival analysis to evaluate the depth of dormancy [ 3 , 12 , 14 , 18 ]. A parametric approach based on probit models with a log-logistic distribution function was adjusted to budbreak of the single nodes as a function of the time after sampling.…”

Section: Introductionmentioning

confidence: 99%

Time-to-event analysis to evaluate dormancy status of single-bud cuttings: an example for grapevines

et al. 2018

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BackgroundThe reduced growth of plants during the winter causes a lack in the perceptibility of the phenological events making challenging the study of dormancy. For deciduous crops, dormancy is generally determined by evaluating budbreak of single-node cuttings that are exposed to conditions suitable for growth. However, the absence of a statistical basis for analyzing and interpreting the budbreak behavior evaluated as the percent budbreak, the average time to budbreak and the time to reach 50% budbreak, has caused inconsistent and contradictory criteria to identify the dormancy status of different deciduous crops.ResultsIn this study, a method was developed to analyze the duration between sampling and budbreak of single-node cuttings and to estimate the dormancy status for grapevines (Vitis vinifera L.) based on the time-to-event distribution of the observations. This method estimates the probability curve of budbreak for each sample and classifies each curve into paradormancy, endodormancy, and ecodormancy according to the significance when compared to a sample curve estimated from cuttings collected during paradormancy and referred to as “reference.”ConclusionThe approach described in this study provided a comparison of the budbreak distribution of cuttings collected during distinct phases with a confidence of 95%. It also allowed the estimation of the date of occurrence of the dormancy stages for two grapevine cultivars ‘Cabernet Sauvignon’ and ‘Chardonnay,’ based on the variability within the sampling season rather than on fixed arbitrary criteria. This approach can also be used to analyze budbreak data of single-node cuttings from other common deciduous crops.Electronic supplementary materialThe online version of this article (10.1186/s13007-018-0361-0) contains supplementary material, which is available to authorized users.

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Dormancy and Cold Hardiness Transitions in Winegrape Cultivars Chardonnay and Cabernet Sauvignon

Cited by 43 publications

References 23 publications

Thermal history parameters drive changes in physiology and cold hardiness of young grapevine plants during winter

Thermal history parameters drive changes in physiology and cold hardiness of young grapevine plants during winter

Kinetics of winter deacclimation in response to temperature determines dormancy status and explains budbreak in differentVitisspecies

Time-to-event analysis to evaluate dormancy status of single-bud cuttings: an example for grapevines

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