Adaptability and stability of 34 peach genotypes for leafing under Brazilian subtropical conditions

Scariotto, Sílvia; Citadin, Idémir; Raseira, M. do C. B.; Sachet, Marcos Robson; Penso, Gener Augusto

doi:10.1016/j.scienta.2013.03.019

Cited by 22 publications

(17 citation statements)

References 20 publications

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“…However, 'Dourado-2', 'Maciel' and 'Marli' demonstrated less sensitivity to thermal oscillation; in other words, their flowering cycle was not altered in the face of different occurrences of cold in both years. According to Scariotto et al (2013), staggered flowering can occur due to the lack of chill accumulation during endodormancy. These results presented a significant temporary range that was different from Souza, Alvarenga, Pio, Gonçalves, and Patto (2013) at Maria da Fé, Minas Gerais State, Brazil, varying from 20 to 41 days.…”

Section: Resultsmentioning

confidence: 99%

“…The peach tree (Prunus persica) is a fruit species native to temperate climates, but varieties have been developed through genetic breeding for subtropical and tropical regions (Chagas et al, 2008;Scariotto, Citadin, Raseira, Sachet, & Penso, 2013). Mild winter climatic conditions are highly variable for peach tree production and are primarily related to temperatures during the dormancy period of the plants.…”

Section: Introductionmentioning

confidence: 99%

“…When this occurs, acrotonic budburst tendencies are also reduced (Maguylo, Cook, & Theron, 2014). The lack of adaptation of peach tree cultivars to mild winter conditions can cause both blooming and flowering to be insufficient and sporadic, thus limiting subsequent fruit yields (Scariotto et al, 2013). Increased emphasis should be placed on selecting cultivars that are well adapted to mild winter conditions in these locations.…”

Section: Introductionmentioning

confidence: 99%

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<b>Adaptability and stability of reproductive and vegetative phases of peach trees in subtropical climate

et al. 2017

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ABSTRACT. The peach tree (Prunus persica) is a fruit species native to temperate climates that requires a chill during its hibernal period to overcome dormancy. However, due to genetic breeding, varieties are currently grown in subtropical and tropical regions where there are low occurrences of chill during this phenological stage. This study evaluated the adaptability and stability of the reproductive and vegetative phases of peach tree cultivars in a subtropical climate. An experiment was designed in randomized blocks with split time plots, with 23 peach tree cultivars and four replications, with each replication consisting of one plant and four shoots. The years of evaluated (plots) and the cultivars (subplots) were considered to be treatments. The relative rates of budburst (RRB), flowering (RRF), shoot formation (SF) and fruit set (FS), average time of budburst (ATB) and flowering (ATF), duration of budburst (DB) and flowering (DF) and number of hours with temperatures below 7.20°C were evaluated during the experimental period. The cultivars 'Bonão', 'Ouromel-4', 'Libra' and 'Maciel' demonstrated greater adaptability during the vegetative phase, whereas'Ouromel-4' and 'Libra' demonstrated greater adaptability and stability during the reproductive phase of peach trees in a subtropical climate.Keywords: Prunus persica, fruit set, shoot formation, chill requirement.Adaptabilidade e estabilidade de fases reprodutivas e vegetativas de pessegueiros em clima subtropical RESUMO. O pessegueiro (Prunus persica) é uma frutífera de clima temperado e necessita de frio durante o repouso hibernal para superar a dormência, entretanto, atualmente é cultivado em regiões subtropicais e tropicais, onde há menor ocorrência de frio durante essa fase fenológica. Este trabalho teve como objetivo avaliar a adaptabilidade e a estabilidade das fases vegetativa e reprodutiva de cultivares de pessegueiro em clima subtropical avaliando os estádios de brotação e floração. O delineamento utilizado foi em blocos casualizados com quatro repetições e quatro ramos por repetição, em esquema de parcelas subdivididas no tempo, no qual as parcelas representam o tempo (2 ciclos produtivos) e as subparcelas as cultivares (23). Foram avaliados a duração da brotação (DB) e floração (DF), o tempo médio de brotação (ATB) e floração (ATF), a quantidade de gemas vegetativas brotadas (RRB) e floríferas brotadas (RRF), a formação de ramos (SF) e frutificação efetiva (FS) e o número de horas com temperatura abaixo de 7,2ºC e 12ºC, e acima de 20ºC durante o período experimental. As cultivares 'Bonão', 'Ouromel-4', 'Libra' e 'Maciel' apresentam maior adaptabilidade e estabilidade da fase vegetativa e 'Ouromel-4' e 'Libra' apresentam maior adaptabilidade e estabilidade da fase reprodutiva de pessegueiro sob clima subtropical. Palavras-chave:Prunus persica, frutificação efetiva, formação de ramos, requerimento em frio.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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<b>Adaptability and stability of reproductive and vegetative phases of peach trees in subtropical climate

et al. 2017

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“…The adaptability and stability of peach genotypes were evaluated for bud sprouting (Scariotto et al, 2013), fruiting and yield (Citadin et al, 2014) in subtropical Brazilian sites, and yield and quality stability in agroecological conditions in Belgrade, Serbia (Rakonjac & •ivanoviae, 2008).…”

Section: Introductionmentioning

confidence: 99%

Adaptability and stability of peach and nectarine cultivars in subtropical climate

et al. 2017

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Information on adaptability and stability of fruit production in different environments or years is crucial to increasing agricultural production potential. Therefore, the objective of this study was to evaluate whether there is interaction between cultivars and years, as well as to assess the stability of peach and nectarine cultivars regarding fruit fresh mass, SS/TA ratio, and cycle length in Viçosa -MG, Brazil. The characteristics fruit fresh mass (FM), soluble solids/titratable acidity ratio (SS/TA), and cycle length (CL) were evaluated in 28 cultivars of peach and two cultivars of nectarine from the orchard of the Universidade Federal de Viçosa, in 2011, 2012, and 2013. The methods used to determine the phenotypic stability across time were Eberhart & Russell (1966) and the Traditional. The interaction cultivars x years was significant for all traits. Cultivar ‘Josefina’ showed broad adaptability for SS/TA ratio, and cultivars ‘Flordaprince’ and ‘Tropical’ for cycle length. For favorable environments, the cultivars ‘Capdebosq’ and ‘Maciel’ are indicated regarding the characteristic fruit mass, and ‘Coral’ and ‘Talismã’ for SS/TA ratio. ‘Rubimel’ was adaptable to unfavorable environments regarding fruit mass.

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“…In this figure Hawerroth et al (2013) found that this temperature is the most efficient in an early variety of apple trees under controlled temperature conditions (5, 10 and 15 o C). Under subtropical climate conditions, some peach cultivars break their dormancy very easily, and this may be due to superficial dormancy or lack of endodormancy (CHAVARRIA et al, 2009;HRUY et al, 2013;SCARIOTTO et al, 2013). Observing the behavior of group 2 varieties, an opposite result in relation to many models used worldwide was observed, which consider a sequential influence of temperatures on dormancy.…”

Section: Introductionmentioning

confidence: 99%

Influence of Different Temperature Levels on the Date of Full Bloom of Peach Varieties in Subtropical Climate

et al. 2016

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-The dormancy dynamics of temperate fruit tree species is complex and highly variable according to genotype and environment. Due to this variability, many phenological models of cold units have not been suitable for subtropical climatic conditions in southern Brazil. The aim of this study was to evaluate the influence of air temperature on the peach dormancy in Urussanga-SC. For this purpose, the correlations between the date of full bloom of sixteen peach varieties and the total hours in which the temperatures remain in certain thermal levels were evaluated. Two groups of varieties with highly differentiated responses to temperature in various times were identified. In the first group, consisting of ten varieties, the beginning of significant influence (p<0.05) of temperatures on the date of full bloom occurred as earlier, in February. In this group, temperatures between 16 and 22 °C accumulated from March to June were those that most contributed to the flowering advance. In the second group, the beginning of the significant influence of temperatures occurred later in April. In this group, the accumulated high temperatures from early April to late May anticipated the full bloom, but from May 25, temperatures below 10 °C were responsible for this advance. This behavior differs from traditional phenological models that consider a sequential cold and heat requirement in the resting phase. The results obtained indicate the possibility of an alternating or parallel influence of different temperature levels on dormancy. Index terms: Prunus persica, dormancy, temperature, statistical method. The phenological data used came from a collection composed of peach tree selections resulting from genetic improvement located in Urussanga, state of Santa Catarina, Brazil (28º 31 'S, and 49º 19' W, 49 m asl). Sixteen selections considered to be adapted to the climate of the region were evaluated. This collection was formed by five plants in sequence of each variety, and for the average phenological records, three central plants were used. The selections, grafted on Okinawa rootstock, were cultivated with spacing of 6 m between rows and 5 m between plants in a Typic Hapludalf of granitic origin. The climate of the region is subtropical humid, with hot summer and no defined dry season (Cfa, according to the Köppen classification). The average annual temperature is 19.4°C, with maximum average temperature of 25.9 ° C and minimum of 14.2°C. The total annual rainfall is 1624.0 mm, and is normally well distributed throughout the year. The hours of cold below 7.2 ° C occur from May to September with an average annual total of 234 hours. INFLUÊNCIA DE DIFERENTES NÍVEIS TÉRMICOS SOBREThe average daily air temperature data (T a ) were collected at the conventional meteorological station of Urussanga-SC, where T a = (T max + T min + T 9 + 2T 2 ) /5, where T max is the maximum daily temperature, T min is the daily minimum temperature, and T 9 and T 2 are temperatures from 9:00 a.m. to 9:00 p.m. respectively. For the calculation of ...

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Adaptability and stability of 34 peach genotypes for leafing under Brazilian subtropical conditions

Cited by 22 publications

References 20 publications

<b>Adaptability and stability of reproductive and vegetative phases of peach trees in subtropical climate

<b>Adaptability and stability of reproductive and vegetative phases of peach trees in subtropical climate

Adaptability and stability of peach and nectarine cultivars in subtropical climate

Influence of Different Temperature Levels on the Date of Full Bloom of Peach Varieties in Subtropical Climate

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