Dormancy in temperate fruit trees in a global warming context: A review

Campoy, José Antonio; Ruiz, David; Egea, J.

doi:10.1016/j.scienta.2011.07.011

Cited by 392 publications

(298 citation statements)

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“…Árvores frutíferas em regiões temperadas entram em dormência no outono e inverno, como estratégia adaptativa para se proteger das condições desfavoráveis para o crescimento (LUEDELING et al, 2013;JONES et al, 2013). A necessidade de frio e de calor são os principais fatores determinantes na quebra de dormência das plantas (LUEDELING et al, 2013;CAMPOY et al, 2011). Nos meses de maio, junho, julho e na primeira semana de agosto, ocorreu o acúmulo de unidades de frio e, a partir da segunda semana de agosto, quando as plantas foram podadas, o acúmulo de calor foi responsável pela brotação.…”

Section: Resultado E Discussãounclassified

Comportamento Da Cultivar Niágara Rosada Enxertada Sobre Diferentes Porta-Enxertos No Sul De Santa Catarina, Brasil

Bruna

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2015

Rev. Bras. Frutic.

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RESUMO A videira ‘Niagara Rosada’ é a principal cultivar de uva de mesa plantada no Sul do Brasil. Para avaliar a qualidade da uva produzida, foi conduzido um experimento com aNiagara Rosada nos seguintes porta-enxertos: ‘Jales’, ‘Tropical’, ‘Campinas’, ‘VR 043-43’, ‘R-99’, ‘Paulsen 1103’, ‘Schwarzmann’,‘Traviú’, ‘Golias’, ‘Gravesac’, ‘RR 101-14’, ‘Dog Ridge’, ‘VR 044-4’, ‘Kobber5BB’ e ‘SO4’, mais o pé-franco. Foram avaliados a fenologia, o vigor, a sobrevivência das plantas ea produção (produtividade, tamanho do cacho e número de cachos por planta). Os diferentes porta-enxertos não influenciam na fenologia da planta. O maior vigor foi observado para o ‘Dog Ridge’, seguido do‘Campinas’, ‘Paulsen 1103’ e ‘VR 043-43’. As maiores mortalidades de planta ocorreram para pé-franco (56%), ‘Traviú’ (50%) e ‘Schwarzmann’(41%). Os porta-enxertos ‘Paulsen 1103’, ‘Campinas’ e ‘Golias’, além de altaprodutividade, apresentam cachos maiores e mais compactos.

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Section: Resultado E Discussãounclassified

Comportamento Da Cultivar Niágara Rosada Enxertada Sobre Diferentes Porta-Enxertos No Sul De Santa Catarina, Brasil

Bruna

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2015

Rev. Bras. Frutic.

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“…Attempting to project the potential impact of climate change on temperate perennial trees, chilling requirements have been provisionally utilized as the best available quantification of the threshold of chill below which negative impacts such as yield declines may occur (Campoy et al 2011;Hatfield et al 2008;Jackson et al 2009). However, the low percentage of flowers fertilized in normal years and June drop resulting from early resource competition indicates that budbreak-based chilling requirements may be greater than the chill accumulation necessary for sustainable yields.…”

Section: Discussionmentioning

confidence: 99%

“…Chilling requirements have been central to the discussion of the impacts of climate change on temperate tree crops and forest ecosystems (Campoy et al 2011). The reproductive and vegetative buds of temperate trees become dormant in autumn and require exposure to winter chill, of an amount specific to species and variety, to exit this state (Westwood 1993).…”

Section: Introductionmentioning

confidence: 99%

“…These budbreak-based estimates of chilling requirements are the primary means of quantification of species-or variety-specific chill accumulation needs-and have served as a starting point for identifying species or varieties that may be vulnerable to the warmer winters associated with climate change (Campoy et al 2011;Hatfield et al 2008;Jackson et al 2009). As the only widely quantified measurement of the relationship between orderly emergence from dormancy and winter temperatures, it is important to determine if budbreakbased estimates of chilling requirements are equivalent to the chilling accumulation thresholds necessary for sustainable yields and can thus continue to be used as a reasonable proxy for estimating the impacts of climate change to temperate trees.…”

Section: Introductionmentioning

confidence: 99%

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Nut crop yield records show that budbreak-based chilling requirements may not reflect yield decline chill thresholds

et al. 2014

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TitleNut crop yield records show that budbreak-based chilling requirements may not reflect yield decline chill thresholds Abstract Warming winters due to climate change may critically affect temperate tree species. Insufficiently cold winters are thought to result in fewer viable flower buds and the subsequent development of fewer fruits or nuts, decreasing the yield of an orchard or fecundity of a species. The best existing approximation for a threshold of sufficient cold accumulation, the "chilling requirement" of a species or variety, has been quantified by manipulating or modeling the conditions that result in dormant bud breaking. However, the physiological processes that affect budbreak are not the same as those that determine yield. This study sought to test whether budbreak-based chilling thresholds can reasonably approximate the thresholds that affect yield, particularly regarding the potential impacts of climate change on temperate tree crop yields. County-wide yield records for almond (Prunus dulcis), pistachio (Pistacia vera), and walnut (Juglans regia) in the Central Valley of California were compared with 50 years of weather records. Bayesian nonparametric function estimation was used to model yield potentials at varying amounts of chill accumulation. In almonds, average yields occurred when chill accumulation was close to the budbreak-based chilling requirement. However, in the other two crops, pistachios and walnuts, the best previous estimate of the budbreak-based chilling requirements was 19-32 % higher than the chilling accumulations associated with average or above average yields. This research indicates that physiological processes beyond requirements for budbreak should be considered when estimating chill accumulation thresholds of yield decline and potential impacts of climate change.

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“…Despite showing some disadvantages, the methodology used in our work has been suitable for evaluating the chilling requirement or dormancy progression in many fruit species, both under artificial chilling accumulation (Mohamed, 2003;Putti et al, 2003;Rahemi, & Pakkish, 2009) and under natural chilling accumulation (Campoy et al, 2011;Dennis, 2003;Hauagge, & Cummins, 1991c;Mohamed, 2008;Oukabli, & Mahhou, 2007). Moreover, this methodology is one of the most suitable for evaluating chilling requirements because it is possible to control several key factors, such as light, thermal amplitude and temperature (Dennis, 2003).…”

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confidence: 99%

<b>Can “Caricia” and “Princesa” apples be considered low-chilling cultivars?

et al. 2017

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ABSTRACT. The purpose of this work was to study the response of two apple cultivars bred for low chilling environments to artificial chilling accumulation. Two trials were carried out; in experiment one, excised shoots were randomly taken from "Caricia" and "Princesa", and in experiment two, intact and excised shoots of "Caricia", "Princesa" and "Gala" (control) were collected. After collection, both shoot types were exposed to artificial chilling accumulation (4.0 ± 0.5°C) from 0 to 1200 chill units (CU). Bud break of mixed buds of "Caricia" and "Princesa" was higher than 50% between 0 CU to 1200 CU, irrespective of shoot type. Bud break of "Gala" mixed buds exceeded 50% only in intact shoots after accumulating 900 CU. The mean time to bud break of "Caricia" and "Princesa" diminished with increasing chilling accumulation and stabilized after ~600 CU, depending on the type of shoot and the year of experimentation. The low-chill apple cultivars tested in this work showed shallow dormancy, but they required moderate cold accumulation (800 -1150 CU) to fully satisfy their chilling requirements. Thus, although their shallow dormancy makes them suitable for cultivation in chill-deficient environments, they cannot be considered low-chill cultivars.Keywords: Malus domestica Borkh, dormancy, bud break, lack of chilling, heat requirements.Os cultivares de maça "Caricia" e "Princesa" podem ser considerados de baixo requerimento de frio?RESUMO. O objetivo deste trabalho foi avaliar a resposta ao acúmulo de refrigeração artificial de dois cultivares de maça de baixo requerimento de frio. Coletaram-se ramos a campo das cultivares "Caricia" e "Princesa", e da cultivar "Gala" (utilizada como controle), com e sem gemas apicais (ramos intactos e decapitados, respectivamente), as quais foram expostas ao acúmulo de refrigeração artificial (4.0 ± 0.5°C) de zero a 1200 unidades de frio (UF). A brotação das gemas em ambos os tipos de ramos foi maior do que 50% em todo o intervalo de acumulação de frio avaliado em "Caricia" e "Princesa". No entanto, em "Gala·" a brotação excedeu 50% somente nos ramos intactos depois de acumular 900 UF. Observou-se que o tempo médio para a brotação das gemas de "Caricia" e "Princesa" estabilizou-se acima das 600 UF, dependendo do tipo de ramo e do ano de experimentação. As gemas dos cultivares avaliados neste trabalho mostraram uma dormência pouco profunda, no entanto precisaram de acumulação moderada de frio (800 -1150 UF) para satisfazer seus requerimentos ecofisiológicos. Portanto, apesar da dormência pouco profunda permitir que estes cultivares sejam adequadamente cultivados em zonas com invernos amenos, não podem ser considerados de baixo requerimento de frio. Palavras-chave:Malus domestica Borkh, dormência, brotação, inverno ameno, requerimento térmico.

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Dormancy in temperate fruit trees in a global warming context: A review

Cited by 392 publications

References 222 publications

Comportamento Da Cultivar Niágara Rosada Enxertada Sobre Diferentes Porta-Enxertos No Sul De Santa Catarina, Brasil

Comportamento Da Cultivar Niágara Rosada Enxertada Sobre Diferentes Porta-Enxertos No Sul De Santa Catarina, Brasil

Nut crop yield records show that budbreak-based chilling requirements may not reflect yield decline chill thresholds

<b>Can “Caricia” and “Princesa” apples be considered low-chilling cultivars?

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