Impact of Chill and Heat Exposures under Diverse Climatic Conditions on Peach and Nectarine Flowering Phenology

Drogoudi, P.; Cantín, Celia M.; Brandi, Federica; Butcaru, A. C.; Cos-Terrer, José; Cutuli, Marcello; Foschi, S.; Galindo, Alejandro; García-Brunton, J.; Luedeling, Eike; Sánchez, María Ángeles Moreno; Nari, Davide; Pantelidis, Georgios; Reig, Gemma; Roera, Valentina; Ruesch, J.; Stănică, F.; Giovannini, D.

doi:10.3390/plants12030584

Cited by 8 publications

(12 citation statements)

References 35 publications

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“…The consecutive completion of chilling and heat requirements are decisive in defining the moment of the budbreak in peach [Prunus persica (L.) Batsch] [22]. Before the growing season, cultivars need to complete specific chilling requirements as a condition to obtain the heat for floral development [23]. If the required chill is not satisfied, potential consequences in bloom delay, fruit growth, and asynchronous growth could happen, affecting maturity stages and reducing yield [7,24,25].…”

Section: Introductionmentioning

confidence: 99%

Modeling the Budbreak in Peaches: A Basic Approach Using Chill and Heat Accumulation

Cifuentes-Carvajal,

Chaves-Córdoba,

Vinson

et al. 2023

Agronomy

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Phenological shifts in peaches have been observed over the last few years due to the fluctuation of the seasonal climate conditions experienced during dormancy, affecting orchard management practices and influencing production and harvest dates. This study aimed to model the vegetative and floral budbreak of selected peach cultivars. Three peach cultivars, including “Rubyprince”, “Harvester”, and “Red Globe”, were considered in this study based on the representation of the early, early-mid, and mid-seasons. The prediction of the budbreak in peaches was assessed using different models that integrate the combination of chill and heat requirements. Models used include the Weinberger model, the modified Weinberger model, Utah, the dynamic model, and the growing degree model. The accumulation of chill varies according to the season evaluated. A model that considers both chill and heat accumulation is presented for each cultivar. Budbreak as an indicator of dormancy completion was established for each cultivar. The outcome of this study is to determine the amount of chilling accumulation and thermal time required to mark the beginning of the budbreak in selected cultivars with a model that predicts the duration of the dormancy. These results are valuable information that can be used for crop management practices and support the mitigation of cold damage during this critical period of crop development.

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Section: Introductionmentioning

confidence: 99%

Modeling the Budbreak in Peaches: A Basic Approach Using Chill and Heat Accumulation

Cifuentes-Carvajal,

Chaves-Córdoba,

Vinson

et al. 2023

Agronomy

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“…Various models have been used to calculate the chilling requirements of a specific cultivar (the Chilling Hours Model, the Utah Model, the Positive Utah Model, the Dynamic Model, etc.) [15,26,30,32].…”

Section: Effect Of Climate Change On Bud Dormancymentioning

confidence: 99%

Climate Change Challenges in Temperate and Sub-Tropical Fruit Tree Cultivation

Roussos

2024

Encyclopedia

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In the last few years, the world has experienced the impacts of climate change, such as elevated mean annual temperature, extreme weather events, drought, etc. Among living organisms, perennial plant species are the ones mostly exposed to climate change impacts, as they may experience different extreme events within the same year, such as flooding during some periods and drought in summer months, extremely low temperatures in winter but excessively high temperatures in summer, etc. Climate change affects a range of physiological functions of temperate fruit and nut tree species, such as their phenophases, bud dormancy release and vernalization, pollination and fruit set, fruit growth and quality, as well as bud sprouting and growth initiation. Besides these, the impact of climate change on pests, diseases, and weeds may generate significant negative interactions with tree physiology, threatening food production, food safety, and human welfare. In the present manuscript, a general aspect of climate change impacts on fruits’ and nut trees’ physiological functions is described and commented on.

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“…Tree growth is affected by many factors, among which genotype, climate, and site are the main driving factors [ 23 , 24 ]. Therefore, environmental factors should be included in the growth model to explain the growth pattern and improve the accuracy of tree growth prediction [ 25 , 26 ].…”

Section: Introductionmentioning

confidence: 99%

Regionally Compatible Individual Tree Growth Model under the Combined Influence of Environment and Competition

Zhang

Ren³

et al. 2023

Plants

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To explore the effects of competition, site, and climate on the growth of Chinese fir individual tree diameter at breast height (DBH) and tree height (H), a regionally compatible individual tree growth model under the combined influence of environment and competition was constructed. Using continuous forest inventory (CFI) sample plot data from Fujian Province between 1993 and 2018, we constructed an individual tree DBH model and an H model based on re-parameterization (RP), BP neural network (BP), and random forest (RF), which compared the accuracy of the different modeling methods. The results showed that the inclusion of competition and environmental factors could improve the prediction accuracy of the model. Among the site factors, slope position (PW) had the most significant effect, followed by elevation (HB) and slope aspect (PX). Among the climate factors, the highest contribution was made by degree-days above 18 °C (DD18), followed by mean annual precipitation (MAP) and Hargreaves reference evaporation (Eref). The comparison results of the three modeling methods show that the RF model has the best fitting effect. The R2 of the individual DBH model based on RF is 0.849, RMSE is 1.691 cm, and MAE is 1.267 cm. The R2 of the individual H model based on RF is 0.845, RMSE is 1.267 m, and MAE is 1.153 m. The model constructed in this study has the advantages of environmental sensitivity, statistical reliability, and prediction efficiency. The results can provide theoretical support for management decision-making and harvest prediction of mixed uneven-aged forest.

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Impact of Chill and Heat Exposures under Diverse Climatic Conditions on Peach and Nectarine Flowering Phenology

Cited by 8 publications

References 35 publications

Modeling the Budbreak in Peaches: A Basic Approach Using Chill and Heat Accumulation

Modeling the Budbreak in Peaches: A Basic Approach Using Chill and Heat Accumulation

Climate Change Challenges in Temperate and Sub-Tropical Fruit Tree Cultivation

Regionally Compatible Individual Tree Growth Model under the Combined Influence of Environment and Competition

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