Curva de crescimento e padrão respiratório de frutos de genótipos de pessegueiro em região de clima subtropical

Silva, Danielle Fabíola Pereira; Silva, José Osmar da Costa e; Matias, Rosana Gonçalves Pires; Ribeiro, Mariana Rodrigues; Bruckner, Cláudio Horst

doi:10.1590/s0100-29452013000200037

Cited by 12 publications

(11 citation statements)

References 7 publications

(5 reference statements)

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“…In 2014, the fruit growth behavior was as expected for peach fruits, according to Silva et al (2013). In this year, non-thinned plants showed lower fruit growth than those that had been thinned or headed, especially in the last assessment, which corresponds to stage III of growth.…”

Section: Resultssupporting

confidence: 57%

Heading of shoots and hand thinning of flowers and fruits on 'BRS Kampai' peach trees

Oliveira

Marodin

Almeida

et al. 2017

Pesq. agropec. bras.

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-The objective of this work was to evaluate the effect of shoot heading and of hand thinning in different development stages of flowers and fruits on the fruit production and quality of 'BRS Kampai' peach (Prunus persica) trees. The experiment was performed during three crop years, under the conditions of the "Depressão Central" region in the state of Rio Grande do Sul, Brazil, and the treatments were: T1, heading of half of the mixed shoot; T2, heading of one third of the mixed shoot; T3, flower thinning in the pink bud stage; T4, thinning at full bloom; T5, thinning of fruit with 5 mm; T6, thinning of fruit with 20 mm; and T7, no thinning or heading (control). Fruit production and quality were evaluated. Plants with no thinning were more productive, but showed high frequency of fruits with a diameter smaller than 60 mm. Shoot heading reduced production per tree and resulted in small-sized fruit. Thinning time did not affect production, and fruit size was greater when thinning was performed at the bloom stage. 'BRS Kampai' peach trees can be thinned starting at bloom, which provides greater fruit size, with no production loss.Index terms: Prunus persica, fruit quality, yield. Desponte de ramos e raleio manual de flores e frutos em pessegueiros 'BRS Kampai'Resumo -O objetivo deste trabalho foi avaliar o efeito do desponte de ramos e do raleio manual realizado em diferentes estágios de desenvolvimento de flores e frutos sobre a produção e a qualidade dos frutos do pessegueiro (Prunus persica) 'BRS Kampai'. O experimento foi realizado durante três safras nas condições da Depressão Central do Rio Grande do Sul, e os tratamentos foram: T1, desponte da metade do ramo misto; T2, desponte de um terço do ramo misto; T3, raleio de flor no estádio de balão rosado; T4, raleio na plena floração; T5, raleio do fruto com 5 mm; T6, raleio do fruto com 20 mm; e T7, sem desponte ou raleio (testemunha). Avaliaram-se a produção e a qualidade dos frutos. Plantas sem raleio foram mais produtivas, mas com alta frequência de frutos com diâmetro inferior a 60 mm. O desponte reduziu a produção por planta e ocasionou frutos pequenos. A época de raleio não afetou a produção, e o diâmetro dos frutos foi maior quando o raleio foi realizado durante a floração. Pessegueiros 'BRS Kampai' podem ser raleados a partir da floração, o que proporciona maior tamanho dos frutos, sem reduzir a produção.Termos para indexação: Prunus persica, qualidade de fruto, produtividade.

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Section: Resultssupporting

confidence: 57%

Heading of shoots and hand thinning of flowers and fruits on 'BRS Kampai' peach trees

Oliveira

Marodin

Almeida

et al. 2017

Pesq. agropec. bras.

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“…There are few studies on the growth curve of peach fruits in different regions of Brazil in the literature [14][15][16]. Researchers in other countries observed that difference in fruit size between genotypes has a strong genetic influence and is broadly explained by differences in the total number of cells in the mesocarp [3,10,14].…”

Section: Introductionmentioning

confidence: 99%

Influence of Temperature on the Development of Peach Fruit in a Subtropical Climate Region

et al. 2019

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Understanding the growing process and fruit size differences among peach cultivars is extremely important in the technological domain of the crop and can provide information to improve the proper crop management (thinning and harvesting seasons) and the crop breeding of fruits with a larger caliber. However, this information is still incipient in subtropical regions and requires further research, especially in Brazil. The aim of this study was to determine the influence of temperature on the growing of four peach cultivars (Tropical, Aurora-2, Ouro Mel-4, and Biuti) under subtropical conditions of field cultivation. Fruit development was determined every two weeks throughout the cycle with 30 fruits from previously identified branches from six different plants of each cultivar. Regarding the thermal accumulation in growing degree-days (GDD), the cultivar ‘Tropical’ showed the lowest agronomic fruit properties (size and mass) and required a lower GDD accumulation during the development stages of the fruits, whereas the cultivar ‘Biuti’ showed higher thermal requirements and higher agronomic properties. The number of cells had greater influence on the final fruit size than the cell area.

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“…A basic color tone was found, as shown in Figure 4, where it is expected to observe the climacteric respiratory peak at the end of maturation (Silva et al, 2013). The predominant base color at this stage is yellow associated with carotenoid content, meteorological conditions, variety, growth conditions, such as those found by Cremasco et al, (2016), and color intensities of peach in order of importance were: 8/8 5 Y, Y 8.10 2.5, 5 and 8/6, and 8/8 2.5 Y, depending on the maturation degree and variety (MORAIS et al, 2017, CREMASCO et al, 2016.…”

Section: Resultsmentioning

confidence: 91%

Quality of peach fruits Jarillo cv. (Prunus persica L.) in Pamplona, Colombia

2018

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The aim of this study was to characterize the quality of peach fruits Jarillo cv., produced under the conditions of altitude tropical climate in three locations: Pamplona, Chitagá and Pamplonita, in Northern Santander, Colombia. Ten trees were sampled by the conditioned latin hypercube method and eight growing fruits with physiological state of maturity were selected. By means of a profile analysis, the hypotheses of parallelism, coincidence and horizontality of quality variables in the complete measurement interval were tested, and in some segments of the interval, some patterns from the graphic point of view were found. A radial diagram was made to study the development of fruit color at each thermal level. When the quotient between longitudinal diameter and equatorial diameter tends to 1 to the left, the highest weight values are reached, highlighting the lowest elevation level, with weights around 150 g. The profile analysis showed, regarding quality variables, that there was a significant interaction between evaluation time and altitude level. The results show that the prevailing climatic conditions affect the physicochemical characteristics of fruits during the growth process until maturation.

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Curva de crescimento e padrão respiratório de frutos de genótipos de pessegueiro em região de clima subtropical

Cited by 12 publications

References 7 publications

Heading of shoots and hand thinning of flowers and fruits on 'BRS Kampai' peach trees

Heading of shoots and hand thinning of flowers and fruits on 'BRS Kampai' peach trees

Influence of Temperature on the Development of Peach Fruit in a Subtropical Climate Region

Quality of peach fruits Jarillo cv. (Prunus persica L.) in Pamplona, Colombia

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