scholarly journals Ideal harvesting point of ‘Limeira-IAC382’ trifoliate orange fruits for seed extraction

2020 ◽  
Vol 42 (1) ◽  
Author(s):  
Patrícia Marluci da Conceição ◽  
Fernando Alves de Azevedo ◽  
Ana Julia Borim de Souza ◽  
Alexandre Gonçalves Próspero ◽  
Marília Morelli ◽  
...  
Keyword(s):  
Germination Rate ◽  
Seedling Emergence ◽  
Titratable Acidity ◽  
Fruit Production ◽  
Soluble Solids ◽  
Trifoliate Orange ◽  
Physicochemical Changes ◽  
Seed Extraction ◽  
Physiological Quality ◽  
Cold Chamber

Abstract Trifoliate orange is one of the rootstocks most used worldwide mainly because it provides excellent quality fruit production. Harvest at the correct time is among factors that determine the physiological quality of seeds. The aim of this study was to identify physicochemical changes in ‘Limeira-IAC382’ trifoliate orange fruits, searching for the ideal harvest moment to obtain high quality seeds. Fruits were harvested at 180, 210 and 240 days after anthesis, stored in cold chamber and evaluated at 0, 15, 30 and 45 days of storage. The following variables were determined: mass loss, fruit color index, soluble solids, total titratable acidity and fruit juice ratio. Seeds were manually extracted and dried until reaching 30% water content. Seeds were used for the performance of germination, electrical conductivity and greenhouse seedling emergence tests. Seeds from fruits harvested at 240 DAA showed higher germination and greenhouse seedling emergence percentage compared to the other treatments until 30 and 45 days of storage in cold chamber, respectively. Storage for 45 days in cold chamber of fruits harvested at 210 DAA increases seed germination rate and the percentage of seedlings from seeds harvested at 180 DAA. It could be concluded that the harvesting of ‘Limeira-IAC382’ trifoliate orange fruits should be performed when fruits reached yellowish peel and low juice ratio, aiming at obtaining seeds with physiological quality.

scholarly journals Physiological Quality of Swingle Citrumelo Seed after Refrigerated Storage of Fruits and Seeds

Agriculture ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 1243
Author(s):  
Marilia Morelli ◽  
Fernando Alves de Azevedo ◽  
Ana Julia Borim de Souza ◽  
Rodrigo Martinelli ◽  
Patrícia Marluci da Conceição
Keyword(s):  
Seed Germination ◽  
Germination Rate ◽  
Soluble Solids ◽  
Maturation Stage ◽  
Refrigerated Storage ◽  
Seed Extraction ◽  
Physiological Quality ◽  
Definition Of ◽  
Cold Chamber ◽  
Swingle Citrumelo

For citrus, there is no definition of the ideal fruit harvesting point for seed extraction. Some studies have shown the positive effect of postharvest refrigerated storage of fruits to obtain quality seeds. This study aimed to evaluate the influence of the fruit maturation stage on the germination of Swingle citrumelo (CS) seeds after the refrigerated storage of fruits and seeds. CS fruits were harvested at 180 days after anthesis (DAA); 210 DAA and 240 DAA. Fruits and seeds were stored in cold chamber for 0, 15, 30, and 45 days. Physicochemical analyses were performed on fruits (colour, soluble solids, acidity and ratio) and seeds (water content, germination, and emergence). Germination of seeds extracted from fruits harvested at 180, 210, and 240 DAA, without refrigerated storage, showed a positive correlation with colour index. The refrigerated storage of fruits and seeds extracted from fruits harvested at 210 DAA, increased the seed germination rate. Peel colour (IC) was correlated positively with the germination of Swingle citrumelo seeds. The results of this study revealed that the absence of refrigerated storage, harvesting Swingle citrumelo fruits, with ripe characteristics (end of harvest), results in a high seed germination rate. On the other hand, refrigerated storage of fruits and seeds extracted from fruits harvested at mid-harvest increases the seed germination rate.

scholarly journals Maturation and physiological quality of IAC-863 Rangpur lime seeds

2019 ◽  
Vol 10 (4) ◽  
pp. 454-460
Author(s):  
Marília Morelli ◽  
Fernando Alves de Azevedo ◽  
Patrícia Marluci da Conceição ◽  
Ana Julia Borim de Souza
Keyword(s):  
Germination Rate ◽  
Physicochemical Analysis ◽  
Soluble Solids ◽  
Rangpur Lime ◽  
Physicochemical Changes ◽  
Physiological Quality ◽  
Solids Content ◽  
Citrus Seeds ◽  
The Ideal

There is a growing demand for high quality seeds to obtain citrus rootstocks. Normative Instruction 48 (MAPA) of September 24, 2013, requires minimum of 50% germination for the marketing of citrus seeds. Harvest season is one of the stages of seed production with great importance to ensure quality, which makes knowing its maturation process an important step. Thus, the objective of this study was to monitor physicochemical changes in IAC-863 Rangpur lime fruits in order to characterize the physiological maturity of seeds, and to define the ideal harvest point in order to obtain seeds with high physiological quality to obtain rootstocks. Physicochemical analysis of fruits (mass loss, color, soluble solids and acidity) and analysis of seeds (water content, germination and emergence) was performed. Higher germination results were observed in seeds obtained from fruits with higher color index and soluble solids content. The storage of IAC-863 Rangpur lime fruits after harvest increases germination rate, especially in mid-season fruits.

scholarly journals Effect of nitrogen sources on fruit characteristics and seed physiological quality of Physalis angulata L.

2019 ◽  
Vol 49 ◽  
Author(s):  
Tamara Torres Tanan ◽  
Alismário Leite da Silva ◽  
Uasley Caldas de Oliveira ◽  
Lourival Palmeira Gonçalves Neto ◽  
Marilza Neves do Nascimento
Keyword(s):  
Germination Rate ◽  
Nitrogen Sources ◽  
Titratable Acidity ◽  
Soluble Solids ◽  
Germination Test ◽  
Uniformity Coefficient ◽  
Physiological Quality ◽  
Mean Germination Time ◽  
Physalis Angulata

ABSTRACT Choosing an appropriate nitrogen source is of utmost importance, since it affects the plant development and fruit and seed yield. This study aimed to evaluate the quality of Physalis angulata fruits and seeds obtained from plants grown in a hydroponic system, under different concentrations of nitrate and ammonium. The treatments consisted of four NO3-:NH4+ ratios (100:0, 75:25, 50:50 and 25:75). After full grown, the fruits were collected for biometric and chemical analyses, and seeds were removed for the germination test. The germination test was conducted in a germination chamber and the parameters evaluated were the germination rate, mean germination time, speed, germination uniformity coefficient and relative frequency. Fruits with lower weight and diameter were obtained at doses above 50 % of ammonium; however, there was an increase for ºBrix and soluble solids/titratable acidity ratio. Such dosage also reduced the rate, speed and uniformity of germination. The combined use of nitrogen sources (50:50 of NO3-:NH4+) is recommended, because it produces larger and sweeter fruits with vigorous seeds.

scholarly journals Pre-Harvest Application of Plant Biostimulant on the Quality and Shelf-Life of Yellow Melon (Cucumis melo L.)

2018 ◽  
Vol 10 (2) ◽  
pp. 252 ◽  
Author(s):  
Edna M. M. Aroucha ◽  
Cleiniane M. G. de Sousa ◽  
José Francismar Medeiros ◽  
Glêidson B. de Góes ◽  
Iarajane B. do Nascimento ◽  
...  
Keyword(s):  
Shelf Life ◽  
Soluble Sugars ◽  
Titratable Acidity ◽  
Soluble Solids ◽  
Internal Cavity ◽  
Total Soluble Sugars ◽  
Cold Chamber ◽  
Cucumis Melo L ◽  
Quality And Shelf Life ◽  
Plot Design

The purpose this work was to evaluate the influence of pre-harvest application of plant biostimulant on the quality and shelf-life of melon. For this an experiment was established in the “Coopyfrutas”, located in Rio Grande do Norte state/Brazil. The treatments consisted of a combination of factors: melon cultivars (‘Goldex’ and ‘Iracema’) and pre-harvest application of plant biostimulant, Crop Set®, (with and without). At commercial maturity, some fruit of each treatment were sampled and analyzed and the others were stored in a cold chamber at 10±2 ºC and 80±2% relative humidity. The experiment was arranged in a completely randomized split-plot design. The plots consisted of cultivars and Crop Set® application and subplots of different storage time (0, 14, 21, 28, and 35 days after harvest) with eight replications. The characteristics evaluated were length, diameter, internal cavity, external and internal appearance, weight loss, fresh firmness, soluble solids, titratable acidity, pH, SS/TA ratio, and total soluble sugars. Applications of plant biostimulant led to an increase in fruit length and diameter. It reduced fresh firmness and increased the pH of ‘Goldex’ fruit. The total soluble sugars reduced at 35 days of storage in the ‘Iracema’ fruit treated with plant biostimulant.

scholarly journals Vigor tests in assessing the quality of signal grass seeds

2017 ◽  
Vol 38 (6) ◽  
pp. 3491
Author(s):  
Paulo Alexandre Fernandes Rodrigues de Melo ◽  
Tatiane Sanches Jeromini ◽  
Carlos Eduardo Affonso ◽  
Edna Ursulino Alves ◽  
Cibele Chalita Martins
Keyword(s):  
Germination Rate ◽  
Pearson Correlation ◽  
Seedling Emergence ◽  
Control Program ◽  
Brachiaria Brizantha ◽  
Quality Control Program ◽  
Market Requirements ◽  
Physiological Quality ◽  
Germination Vigor

The correct assessment of the physiological quality of seed lots is necessary for the quality control program of companies. For such purpose, tests that detect differences in the physiological potential of seed lots and that meet the minimum market requirements. Thus, the study was conducted towards assessing the efficiency of laboratory tests in differentiating the quality of Brachiaria brizantha cv. Xaraés seed lots. Seeds from nine lots were assessed regarding water content, germination, first germination count, electrical conductivity and seedling emergence in sand in the laboratory (normal seedlings, first count and germination rate index), and the results were compared with those from the seedling emergence test conducted in the field. The experimental design used was completely randomized, with four replicates, and the Pearson correlation coefficient between the values from the germination, vigor and field seedling emergence tests was determined. The germination and seedling emergence in sand tests and the seedling emergence rate index efficiently assess the physiological quality of Brachiaria brizantha cv. Xaraés seed lots, providing data similar to those from seedling emergence in the field.

scholarly journals Quality of papaya hybrid grown under different irrigation depths

2013 ◽  
Vol 33 (4) ◽  
pp. 865-875 ◽  
Author(s):  
Mônica S. da Silva ◽  
Alberto S. de Melo ◽  
Juarez P. Pedroza ◽  
Josivanda P. Gomes ◽  
Sebastião de Oliveira M. Júnior
Keyword(s):  
Titratable Acidity ◽  
Fruit Production ◽  
Soluble Solids ◽  
Semiarid Region ◽  
Replacement Rate ◽  
Productive Potential ◽  
Irrigation Depth ◽  
Brazilian Northeast ◽  
Longitudinal Diameter

Irrigation is a practice widely used in fruit production in the Brazilian Northeast region, including in the papaya crop in order to increase their productivity. For the purpose of knowing the productive potential of papaya hybrid irrigated, an experiment was carried out in order to evaluate the performance of a papaya hybrid under different irrigations depths. Four irrigation depths (50, 75, 100 and 125% of ETo) were tested and the reference evapotranspiration was calculated by the Penman-Monteith model. The hybrid papaya used was UENF/Caliman 01, which was planted in single rows, spaced 4 x 2m from each other, and irrigated by dripping. The experimental design in randomized blocks was used with six replications and three plants per plot. The following variables were evaluated: transversal diameter, longitudinal diameter, pulp thickness, external and internal appearances, soluble solids, titratable acidity, pulp pH and soluble solids/titratable acidity relation. The higher transversal and longitudinal diameters of the fruit were obtained applying an irrigation depth of about 108% of evapotranspiration. The UENF/Caliman 01 hybrid can be cultivated in the semiarid region of the State of Paraiba, Brazil, with replacement rate of 100% ETo, without compromising the quality of the fruits.

scholarly journals Study of Heat Treatment in Processing of Pumpkin Puree (Cucurbita moschata)

2017 ◽  
Vol 9 (10) ◽  
pp. 234 ◽  
Author(s):  
L. C. O. Santos Jr ◽  
Vanessa Simão ◽  
Júlia Dos Santos Opuski de Almeida ◽  
Ana Carolina Moura de Sena Aquino ◽  
Eduardo Carasek ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Microbial Contamination ◽  
Degradation Products ◽  
Titratable Acidity ◽  
Physicochemical Characteristics ◽  
Soluble Solids ◽  
Microbial Load ◽  
Cucurbita Moschata ◽  
Total Carotenoids ◽  
Physicochemical Changes

Pumpkins have richness of nutrients and in puree form may contribute to their greater appreciation in the vegetable processing industry. However, studies are necessary for its processing, since it is part of the group of risk of microbial contamination (pH > 4.5). Thus, this work aimed to study the pumpkin puree processing by heat treatment in autoclave wherein the product was subjected to sterilization by autoclaving at 121 °C to check their microbial load and physicochemical characteristics and to identify the volatile compounds of headspace in stand up pouch packaging. The heat treatment in autoclave for 10, 20 and 30 minutes was effective in eliminating microbial load of the sample (< 1.0 × 101) and also induced the decrease of pH and increase of titratable acidity (TA), total soluble solids (TSS) and total carotenoids. The compounds identified in the headspace after autoclaving were alcohols, aldehydes, alkenes, ketones, esters, ethers and terpenes, many of them aromatic compounds that characterize pumpkin and carotenoid degradation products and acids that justify physicochemical changes after processing.

scholarly journals Analysis of growth and physicochemical changes in apple cv. Anna in a high-altitude tropical climate

2021 ◽  
Vol 15 (2) ◽  
Author(s):  
Andrea Cepeda M. ◽  
Javier Enrique Vélez-Sánchez ◽  
Helber Enrique Balaguera-López
Keyword(s):  
High Altitude ◽  
Titratable Acidity ◽  
Soluble Solids ◽  
Growing Degree Days ◽  
Fresh Weight ◽  
Degree Days ◽  
Important Advance ◽  
Physicochemical Changes ◽  
Tropical Conditions ◽  
Total Titratable Acidity

The objective of this research was to carry out an analysis of growth and physicochemical changes in cv. Anna apple in the Colombian high-altitude tropics using on the accumulation of growing degree days (GDD). Fruit samplings were taken every 15 days after anthesis (DAA) until harvest at 100 DAA (892.37 GDD). The dry and fresh weight and the equatorial and polar diameters followed a simple sigmoidal pattern. This was confirmed with the behavior of the growth rates. The equatorial and polar diameters increased drastically between 455.39 and 589.32 GDD (45 and 60 DAA), while the weight did not, indicating that the void spaces increased in the pulp during this period. The respiratory rate had the highest value (61.93±6.79 mg CO2 kg-1 h-1) at 159.61 GDD (15 DAA) and then decreased continuously until harvest. The firmness increased from 159.61 to 455.39 GDD and, then continuously decreased, at harvest, it was 38.38±3.48 N. The total soluble solids increased and had an ending value of 8.58±0.37ºBrix. The total titratable acidity increased from 159.61 to 319.79 GDD (30 DAA), and then decreased until the end of the study with an acidity of 0.71±0.03%. The color index increased linearly as a function of development, but the values were <0 at harvest. These results are an important advance for knowledge on the behavior of apple cv. Anna under high-altitude tropical conditions.

scholarly journals Adaptability and stability of peach and nectarine cultivars in subtropical climate

Revista CERES ◽  
2017 ◽  
Vol 64 (5) ◽  
pp. 516-522 ◽  
Author(s):  
Rosana Gonçalves Pires Matias ◽  
Claudio Horst Bruckner ◽  
Danielle Fabíola Pereira da Silva ◽  
Pedro Crescêncio Souza Carneiro ◽  
João Alison Alves de Oliveira
Keyword(s):  
Cycle Length ◽  
Titratable Acidity ◽  
Fruit Production ◽  
Fresh Mass ◽  
Soluble Solids ◽  
Subtropical Climate ◽  
Production Potential ◽  
Phenotypic Stability ◽  
The Stability ◽  
Fruit Mass

ABSTRACT 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.

scholarly journals Minitomato cultivation with substrate under different fertigation management strategies

2018 ◽  
Vol 36 (1) ◽  
pp. 88-93
Author(s):  
Ricardo S Bezerra ◽  
Adão Wagner P Evangelista ◽  
José Alves Júnior ◽  
Abadia R Nascimento ◽  
Derblai Casaroli
Keyword(s):  
Irrigation System ◽  
Management Strategies ◽  
Fruit Size ◽  
Titratable Acidity ◽  
Fruit Production ◽  
Soluble Solids ◽  
Tomato Crop ◽  
Tomato Plants ◽  
Solids Content ◽  
High Level

ABSTRACT The application of high level of fertilization and inadequate management of fertigation in tomato crop can promote increase of salinity of the solution, nutritional imbalance and physiological disorders in the plants, consequently reduces the productivity and the quality of the fruits. The aim of this study was to evaluate different fertigation strategies in growth and production of mini tomato plants cultivated with substrate in a greenhouse. The experimental design was in randomized complete blocks with four treatments and twenty replicates. The treatments corresponded to four fertigation strategies, as follows: T1 [(control) fertigation with leaching of 20%]; T2 fertigation throughout the day and irrigation at the end of the day with leaching of 20%; T3 irrigation with leaching of 20%, followed by fertigation in all activations of the irrigation system; T4 fertigation with leaching of 20% and reuse of the leached solution. Stem height and diameter, number of clusters, total and commercial fruit production, fruit size, fruit color, total titratable acidity, soluble solids content and fruit texture were evaluated. No significant differences were detected among the treatments in relation to the growth variables of the mini tomato plants. The strategies of fertigation tested do not influence significantly the growth of tomato plants. The T1 and T4 managements provide higher commercial production and fruits with higher content of soluble solids when compared with other management strategies evaluated. Considering the nutritional factor, we recommend to reuse the nutrient solution used in the tomato cultivation with substrate, correcting daily the electrical conductivity of the solution.

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