scholarly journals ‘Maciel’ peach tree development grafted on ‘Flordaguard’ clonal rootstock in different periods

2017 ◽  
Vol 3 (2) ◽  
pp. 74
Author(s):  
Aline Ramm ◽  
Márcia Wulff Schuch ◽  
Cíntia de Moraes Fagundes ◽  
Jacqueline Barcelos da Silva Silva ◽  
Roseane Maidana Moreira
Keyword(s):  
Titratable Acidity ◽  
Soluble Solids ◽  
Plant Production ◽  
Peach Tree ◽  
Trunk Diameter ◽  
Physical Chemical ◽  
Dormant Bud ◽  
Canopy Volume ◽  
Tree Development

The objective of this study was to compare the vegetative and productive aspects and the quality of “Maciel” peach fruits grown on ‘Flordaguard’ clonal rootstock obtained from mini-cuttings, in different grafting periods (active bud and dormant bud). The experiment was conducted in an orchard located at Centro Agropecuario de Palma, in the county of Capao Leao, by Universidade Federal de Pelotas, RS (UFPel), from 2014/15 to 2015/16. The following variables related to the vegetative aspects were evaluated: canopy volume, trunk diameter, branch diameter, plant height, phenology (initial, full and final flowering) , productive aspects, estimated productivity (t.ha-1), production (kg. plant), production effectiveness, fruit diameter and physical-chemical characteristics such as firmness, color, pH, titratable total acidity, soluble solids, soluble solids/ titratable acidity relationship, antioxidant capacity, phenolic compounds and carotenoids. The most recommended grafting method for the ‘Maciel’ peach tree on ‘Flordaguard’ rootstock propagated by mini-cuttings is the active bud grafting.

scholarly journals Strobilurin and boscalid in the quality of net melon fruits

2017 ◽  
Vol 38 (2) ◽  
pp. 543 ◽  
Author(s):  
Ana Claudia Macedo ◽  
Amanda Cristina Esteves Amaro ◽  
Anamaria Ribeiro Pereira Ramos ◽  
Elizabeth Orika Ono ◽  
João Domingos Rodrigues
Keyword(s):  
Cucumis Melo ◽  
Titratable Acidity ◽  
High Ratio ◽  
Soluble Solids ◽  
Active Principle ◽  
Physiological Effects ◽  
Physical Chemical ◽  
Hormonal Balance ◽  
Fruit Mass

Until recently, fungicides were used exclusively for disease control; however observations of physiological effects brought a new concept to the use of these products. Strobilurins have positive physiological effects on crop yield, due to the increase of liquid photosynthesis and better hormonal balance. However, boscalid complements the action of these fungicides, applied alternately or together. The aim of this study was to evaluate the effect of strobilurins (azoxystrobin and pyraclostrobin), boscalid and the mixture of these on the physical-chemical quality of net melon fruits (Cucumis melo var. Reticulatus). The experiment was conducted in the municipality of São Manuel (SP), using the hybrid of Cantaloupe M2-308 net melon, the experimental design was in randomized blocks with five replicates. The treatments used were: T1 - control; T2 - azoxystrobin 60g ha-1 of active principle (a.p.); T3 - boscalid 75g ha-1 of the a.p.; T4 - pyraclostrobin 50g ha-1 of the a.p.; T5 - boscalid (37,5g ha-1) of the a.p. + pyraclostrobin (25g ha-1) of the a.p. The first application of the treatments was carried out at fourteen days after the transplanting of the seedlings and the others at seven day intervals, totaling eight applications throughout the cycle. Two fruits of each plot were collected, which were identified for analysis in the laboratory. The following characteristics were evaluated: fresh fruit mass; mesocarp thickness, pulp texture, peel trajectory, pH, titratable acidity, soluble solids and the ratio. The results were submitted to analysis of variance and the averages compared by the Tukey test at 5% probability using the SISVAR program. The fruits of the plants treated with boscalid 75g ha-1 were the ones that showed higher concentration of soluble solids and low titratable acidity, resulting in a better ratio. Despite the lower value, the fruits of the plants treated with pyraclostrobin 50g ha-1 showed a high ratio value, besides presenting higher value for pulp texture. The mixture of boscalid (37.5g ha-1) + pyraclostrobin (25g ha-1) also showed high values of soluble solids which resulted in a good “ratio” value.

Refrigerated storage of fresh-cut marolo (Annona crassiflora mart.)

2020 ◽  
Vol 10 (2) ◽  
pp. 44-54
Author(s):  
Flávia Della Lucia ◽  
Eric Batista Ferreira ◽  
Sandra Maria Oliveira Morais Veiga ◽  
Luciana Azevedo ◽  
Marcela Aparecida Miranda Moreira ◽  
...  
Keyword(s):  
Storage Time ◽  
Titratable Acidity ◽  
Soluble Solids ◽  
Physical Chemical ◽  
Significant Difference ◽  
Thermotolerant Coliforms ◽  
Fresh Cut ◽  
Annona Crassiflora ◽  
Storage Temperatures

Marolo is a fruit typical of the Brazilian Savanna that is highly appreciated for its exotic flavour, nutritional value and sensory attributes. This study aimed to assess the quality of fresh-cut marolo by checking for possible changes in physical, chemical, microbiological and sensorial characteristics during cold storage (12 days at 0°C, 5°C and 10°C). Firmness varied based on storage time; the fruit softened on the 8th day and then increased in hardness until the end of the study. The lowest storage temperatures reduced the darkening rate of this product. No variations in the levels of soluble solids (12.7 to 14.6°B) or total phenolics (741.06 to 1295.21 mg. GAE.100g-1) were observed. Fruits stored at 10 °C showed an increase in titratable acidity after the 5th day and an increase in pH on the 10th and 12th days. Increases in the soluble pectin (156 to 265.73 mg.100g-1) and total pectins (>1.000 mg.100g-1) were noted. No significant difference was observed in the count of the total and thermotolerant coliforms, and the growth of filamentous fungi and yeasts decreased after storage at 0°C and 5°C after the 5th day. Storage at 5 °C for 5 days was found to be the most efficient set of conditions for maintaining the physical, chemical, microbiological and sensory characteristics of marolo.

scholarly journals Post harvest evaluation of physical-chemical parameters of mechanically damaged Tahiti acid limes

2010 ◽  
Vol 1 (2) ◽  
pp. 79
Author(s):  
Michel Shoiti Tamura ◽  
Roselene Ferreira Oliveira ◽  
Simone Correia Molina ◽  
Edmar Clemente
Keyword(s):  
Titratable Acidity ◽  
Soluble Solids ◽  
Chemical Parameters ◽  
Post Harvest ◽  
Physical Chemical ◽  
Randomized Design ◽  
Significant Difference ◽  
Completely Randomized Design ◽  
Solids Content

<p>From harvest to consumption, fruit and vegetables suffer a series of mechanical damages which, depending on their sensitiveness, may cause damages that put their final quality at risk. This work had as its objective evaluate the post harvest quality of mechanically damaged &lsquo;Tahity&rsquo; acid limes. The experiment was carried out in a completely randomized design, with 3 repetitions and 7 fruits per treatment, mechanical damages were then evaluated by cutting and impacting in comparison to healthy fruits (control), and maintained for periods of 0, 3. 6, 9, 12, 15 and 18 days, thus obtaining a 3 x 7 factorial experiment. Analyses were made throughout the 18 days, so as to determine the total soluble solids content (expressed in &deg;Brix); titratable acidity (in g of citric acid. 100mL<sup>-1</sup>); ratio (relationsoluble solids and titratable acidity); vitamin C (expressed in mg of ascorbic acid 100mL<sup>-1</sup>) and pH. The results obtained showed that there was significant difference in the chemical parameters evaluated, mainly those submitted to damaging treatment.</p><p>&nbsp;</p><p>DOI: http://dx.doi.org/10.14685/rebrapa.v1i2.20</p>

scholarly journals Agronomic performance of the Maciel peach with different rootstocks

2017 ◽  
Vol 38 (3) ◽  
pp. 1217 ◽  
Author(s):  
Caroline Farias Barreto ◽  
Marines Batalha Moreno Kirinus ◽  
Pricila Santos da Silva ◽  
Carina Radmann Schiavon ◽  
Cesar Valmor Rombaldi ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Prunus Persica ◽  
Titratable Acidity ◽  
Soluble Solids ◽  
Total Phenolic ◽  
Agronomic Performance ◽  
Total Carotenoids ◽  
Trunk Diameter ◽  
Flesh Firmness ◽  
Canopy Volume

The rootstock influences the agronomic performance of fruit plants. In Prunus persica (peach), particularly those varieties produced in Brazil, this relationship is not well understood. We, therefore, set out to evaluate the performance of the peach cultivar Maciel with eight rootstocks, Aldrighi, Capdeboscq, Flordaguard, Nemaguard, Okinawa, Umezeiro, Tsukuba, and Seleção Viamão, planted in 2006 and evaluated in the 2014/2015 and 2015/2016 seasons. Phenology of flowering, trunk diameter, canopy volume, fruit number, and yield were evaluated in the field. For the fruit, we evaluated the mass, diameter, color, flesh firmness, soluble solids concentration, titratable acidity, concentration of total phenolic compounds, carotenoids, and antioxidant activity. Plants from the Aldrighi and Nemaguard rootstocks flowered earlier than plants from the other rootstocks in 2014, and in 2015, flowering was variable in all rootstocks. The cultivar Maciel on Umezeiro had low vigor, trunk diameter, and canopy volume. On Aldrighi, Capdeboscq, Flordaguard, Nemaguard, and Tsukuba this cultivar showed good production rates. The fruit color, flesh firmness, concentration of soluble solids, total phenolics, antioxidant activity, and total carotenoids were influenced by rootstock and harvest.

scholarly journals PRODUCTION, PHYSICAL-CHEMICAL QUALITY AND BIOATIVE COMPOUNDS OF MISTY BLUEBERRY FRUIT UNDER DIFFERENT PRUNING INTENSITIES

2017 ◽  
Vol 39 (spe) ◽  
Author(s):  
GISELY CORREA DE MOURA ◽  
◽  
MARCIA VIZZOTTO ◽  
LUCIANO PICOLOTTO ◽  
LUIS EDUARDO CORRÊA ANTUNES ◽  
...  
Keyword(s):  
Fruit Size ◽  
Titratable Acidity ◽  
Fruit Production ◽  
Soluble Solids ◽  
Postharvest Quality ◽  
Yield And Quality ◽  
Physical Chemical ◽  
Total Titratable Acidity ◽  
Phytochemical Compounds

ABSTRACT The objective of this study was to evaluate the effect of pruning intensity on yield and quality of blueberries fruits. It was evaluated the cultivar Misty. The treatments were: absence of pruning; light pruning; regular pruning and drastic pruning. The experimental design was randomized blocks with four replications. The variables analyzed were fruit production, fruit size, pH, total soluble solids (TSS) and total titratable acidity (TTA), and the bioactive compounds such as phenolic compounds, anthocyanins and antioxidant activity. The plants that received drastic pruning showed higher averages of production and fruit size. The highest concentrations of phytochemical compounds in blueberry fruits occurred as pruning was more drastic. The use of different intensity of pruning can modify the productive behavior and postharvest quality of fruits.

scholarly journals Development of ‘Maciel’ peach trees on different propagation systems

2018 ◽  
Vol 40 (4) ◽  
Author(s):  
Aline Ramm ◽  
André Luiz Külkamp de Souza ◽  
Roberta Manica-Berto ◽  
Cari Rejane Fiss Timm ◽  
Márcia Wulff Schuch ◽  
...  
Keyword(s):  
Phenolic Compounds ◽  
Antioxidant Capacity ◽  
New Technologies ◽  
Block Design ◽  
Titratable Acidity ◽  
Productive Efficiency ◽  
Soluble Solids ◽  
Trunk Diameter ◽  
Canopy Volume ◽  
Peach Trees

Abstract The development of new technologies for seedling production is essential in fruit growing. In this context, the objective was to compare vegetative and productive aspects of ‘Maciel’ peach trees and the quality of fruits from plants under different propagation systems. The experiment was carried out in a randomized complete block design with four replications, in a 2 x 3 factorial scheme, two years (2014 and 2015) and three propagation systems (self-rooted ‘Maciel’ (minicutting), ‘Maciel’ with rootstock ‘Okinawa’ (minicutting) e ‘Maciel’ with rootstock ‘Okinawa’ (seed)). The variables evaluated were canopy volume, trunk diameter, yield, productive efficiency, fruit diameter, soluble solids (SS), titratable acidity (TA), SS/TA ratio, pH, pulp firmness, carotenoids, phenolic compounds and antioxidant capacity. The self-rooted ‘Maciel’ peach plants, in the second year of evaluation, present higher canopy volume, trunk diameter and thus, they express higher yield and productive efficiency. Fruit quality how much soluble solids, titratable acidity, SS/TA ratio, pH and pulp firmness are not altered by different propagation systems. The use of different propagation systems over two years modifies the levels of carotenoids and phenolic compounds total and, consequently, the antioxidant capacity of the fruits of ‘Maciel’ peach plants.

ALTERAÇÕES FÍSICAS DE CAQUIS ‘KYOTO’ SUBMETIDOS À APLICAÇÃO DE 1-METILCICLOPROPENO

2017 ◽  
Vol 32 (3) ◽  
pp. 288
Author(s):  
Nathalie Cardoso Cábia ◽  
Rogério Lopes Vieites
Keyword(s):  
Titratable Acidity ◽  
Soluble Solids ◽  
Starch Degradation ◽  
Diospyros Kaki ◽  
Chemical Quality ◽  
Titrable Acidity ◽  
Physical Chemical ◽  
Maturation Index ◽  
Index Ratio

O presente trabalho teve como objetivo avaliar a qualidade físico-química de caquis ‘Kyoto’ tratados com 1-metilciclopropeno (1-MCP). Os frutos, após a colheita, foram selecionados, higienizados e expostos a diferentes concentrações de 1-MCP (0 ppb, 500 ppb, 1000 ppb e 1500 ppb) e após o procedimento foram armazenados sob refrigeração a 0 ± 0,5°C e 90 ± 5% de UR. Foram realizadas análises de taxa respiratória, perda de massa fresca, acidez titulável, potencial hidrogeniônico (pH), sólidos solúveis e índice de maturação (“Ratio”). As análises foram realizadas nos frutos a cada 7 dias, ao longo de 35 dias de armazenamento refrigerado. O delineamento utilizado foi inteiramente casualizado, com 3 repetições por tratamento, utilizando-se o teste de Tuckey a 5% de probabilidade. Nas condições em que o trabalho foi realizado, pode-se concluir que as doses estudadas de 1-MCP não se apresentaram eficientes no controle do amadurecimento dos caquis ‘Kyotos’ durante os 35 dias de armazenamento, porém os frutos tratados com 1500 ppb de 1-MCP apresentaram controle da acidez titulável e de sólidos solúveis, indicando que afetou a taxa de degradação do amido; e a dose de 1000 ppb se apresentou mais eficiente na manutenção da firmeza.PALAVRAS-CHAVES: Diospyros kaki L., qualidade, inibição do etileno, pós-colheita. EFFECTS OF 1-METHYLCYCLOPROPENE APLICATION ON ‘KYOTO’ PERSIMMON PHYSICAL CHARACTERISTICSABSTRACT: The presente work aimed to evaluate the physical-chemical quality of ‘Kyoto’ persimmons treated with 1-methylcyclopropene (1-MCP). The fruits, after harvest, were selected, Satinized and exposed to different concentrations of 1-MCP (0 ppb, 500 ppb, 1000 ppb and 1500 ppb) and then were stored under refrigeration at 0 ± 0,5°C and 90 ± 5% RH. Respiratory rate, fresh mass loss, titrable acidity, hydrogen ionic potential (pH), soluble solids and maturation index (“Ratio”) were performed. The analyzes were carried out every 7 days, during 35 days of refrigeted storage. The experiment design was completely randomized, with 3 replicates per treatment, using the Tuckey test at 5% propability. In the conditions the work was carried out, it can be concluded that the studied doses of 1-MCP were not, efficient in controlling the ripening of ‘Kyotos’ persimmons during the 35 days of storage however the fruits treated with 1500 ppb of 1-MCP showed control of titratable acidity and soluble solids, indicating that it affected the rate of starch degradation; and the 1000 ppb dose was more efficient in maintaining firmness.KEYWORDS: Diospyros kaki L., quality, ethylene inhibition, post-harvest. 

scholarly journals PRODUCTION, PHYSICAL-CHEMICAL QUALITY AND BIOATIVE COMPOUNDS OF MISTY BLUEBERRY FRUIT UNDER DIFFERENT PRUNING INTENSITIES

2017 ◽  
Vol 39 (spe) ◽  
Author(s):  
GISELY CORREA DE MOURA ◽  
MARCIA VIZZOTTO ◽  
LUCIANO PICOLOTTO ◽  
LUIS EDUARDO CORRÊA ANTUNES
Keyword(s):  
Fruit Size ◽  
Titratable Acidity ◽  
Fruit Production ◽  
Soluble Solids ◽  
Postharvest Quality ◽  
Yield And Quality ◽  
Physical Chemical ◽  
Total Titratable Acidity ◽  
Phytochemical Compounds

ABSTRACT The objective of this study was to evaluate the effect of pruning intensity on yield and quality of blueberries fruits. It was evaluated the cultivar Misty. The treatments were: absence of pruning; light pruning; regular pruning and drastic pruning. The experimental design was randomized blocks with four replications. The variables analyzed were fruit production, fruit size, pH, total soluble solids (TSS) and total titratable acidity (TTA), and the bioactive compounds such as phenolic compounds, anthocyanins and antioxidant activity. The plants that received drastic pruning showed higher averages of production and fruit size. The highest concentrations of phytochemical compounds in blueberry fruits occurred as pruning was more drastic. The use of different intensity of pruning can modify the productive behavior and postharvest quality of fruits.

scholarly journals Ethylene absorber (KMnO4) in postharvest quality of pinha (Anona squamosa L.)

2019 ◽  
pp. 605
Author(s):  
Alex Guimarães Sanches ◽  
Maryelle Barros Da Silva ◽  
Elaine Gleice Silva Moreira ◽  
Edmarcos Xavier Dos Santos ◽  
Keren Railka Paiva Menezes ◽  
...  
Keyword(s):  
Shelf Life ◽  
Starch Content ◽  
Storage Period ◽  
Titratable Acidity ◽  
Soluble Solids ◽  
Postharvest Quality ◽  
Chemical Quality ◽  
Visual Appearance ◽  
Physical Chemical

The ripening pattern of the climacteric type of the pinha (Anona squamosa L.) limits its shelf life at room temperature, in addition, storage at low temperatures develops cold sores on the fruit. Thus, the association of conservation technologies is fundamental to reduce the losses in the post-harvest of this fruit, so it was aimed to evaluate sachets impregnated with potassium permanganate (KMnO4) associated with refrigeration in the control of ripening and preservation of quality. For this, pinhas were harvested at physiological maturity, packed in polystyrene styrofoam trays coated with PVC film with and without the presence of sachets containing 3 g of KMnO4 and stored at 13 ºC for 20 days. Every five days the fruit quality was evaluated as: weight loss, cracking index, firmness, external appearance, starch content, soluble solids, titratable acidity, pH, ratio SS/TA, coloring (Hue, Chroma and Luminosity) and cold damage. The absorption of ethylene by the KMnO4 sachet inside the packages preserved significantly (p<0.05) the physical-chemical quality and the visual appearance of the fruits but did not influence the coloration (chroma and luminosity) and incidence of damage by cold in relation to its control at the end of the storage period. The packing of pinhas containing 3 g of KMnO4 is an alternative to delay ripening, prolong the shelf life without compromising the physical-chemical quality of the fruits.

scholarly journals Gibberellic acid reduces clusters rot of ‘Sauvignon blanc’ grapes

2019 ◽  
Vol 41 (4) ◽  
Author(s):  
Pricila Santos da Silva ◽  
Marines Batalha Moreno Kirinus ◽  
Caroline Farias Barreto ◽  
Carlos Sebastián Pérez Lamela ◽  
Marcelo Barbosa Malgarim ◽  
...  
Keyword(s):  
Gibberellic Acid ◽  
Titratable Acidity ◽  
Climatic Conditions ◽  
Soluble Solids ◽  
Rio Grande Do Sul ◽  
Sauvignon Blanc ◽  
Physical Chemical ◽  
Maturation Index ◽  
The Ideal

Abstract The ripening of grapes is impaired by climatic conditions due to the prolonged rainy season and thus facilitates the proliferation of diseases such as grape clusters rotting, caused by the fungus Botrytis cinerea, even before the ideal harvesting point. The aim of the study was to evaluate the effect of gibberellic acid (GA3) on rot and on physical-chemical quality of ‘Sauvignon Blanc’ grapevine. The experiment was carried out in the production season of 2016 and 2017 in Campanha region in Rio Grande do Sul, Brazil. The GA3 treatments were at the doses of 0 (control); 2; 4; 6 and 8 mg L-1 of GA3. The percentage of clusters rotting and maturation index decreased, however, the titratable acidity increased with GA3 doses. The cluster and rachis length increased with application of GA3. The cluster width; cluster, rachis and berry mass and the soluble solids were not influenced by application of GA3. In ‘Sauvignon Blanc’ grapevine, GA3 reduced the percentage of clusters rotting and improved the cluster and rachis length characteristics and titrable acidity.

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