Patents for the Physiological Quality in Seeds of Peach Rootstock Classified by Weight and Stored for Different Periods

Background: Among stone fruit, the peach (Prunus persica (L) Batsch) is one of the most widely grown species in Brazil, in both area cultivated and in production. Objective: The aim of this study was to evaluate the physiological quality of heavy and light seeds of four cultivars of Prunus persica for two storage periods, from tests of electrical conductivity, germination, and an analysis of initial plantlets growth. Methods: The Electrical Conductivity test (EC) was conducted in a Completely Randomised Design (CRD), in a 4 x 2 x 5 factorial scheme with five replications. The germination test was carried out in CRD, in a 4 x 2 factorial scheme with eight replications. The physiological quality of the seeds was determined at zero and twelve month’s storage. For the growth analysis, the experimental design was in CRD, in a 4 x 2 factorial scheme with four replications. Results: Under the conditions of the present study, it was found that the tests of germination and electrical conductivity were complementary in evaluating physiological quality in seeds of Prunus persica rootstock, suggesting that independent of the weight of the seeds, in ‘Capdeboscq’, ‘Aldrighi’, ‘Okinawa’ and ‘Okinawa Roxo’, there is a loss of quality and viability when the seeds are stored for a period of 12 months. Conclusion: Under the experimental conditions of the present study, it was concluded that storage for a period of 12 months in Recent patents is not rather recommendable for maintaining quality and viability in seeds of Prunus persica of the Capdeboscq, Aldrighi, Okinawa and Okinawa Roxo cultivars.

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ELECTRICAL CONDUCTIVITY AND QUALITY OF DIFFERENT UMBEL ORDER CARROT SEEDS

Revista Brasileira de Agropecuária Sustentável ◽

10.21206/rbas.v9i04.8079 ◽

2020 ◽

Vol 9 (04) ◽

pp. 75-81

Author(s):

Luana de Souza Marinke ◽

Hugo César Rodrigues Moreira Catão ◽

Gabrielly Fernanda Francisco ◽

Ítala Menegon Castilho ◽

Letícia Rodrigues de Oliveira ◽

...

Keyword(s):

Electrical Conductivity ◽

Germination Rate ◽

Statistical Design ◽

Germination Test ◽

Aerial Portion ◽

Initial Characterization ◽

Different Temperatures ◽

Physiological Quality ◽

Final Score

Carrot seeds exhibit irregular vigor due to the wide blooming period of the crop. Results from germination tests are insufficient to evaluate the physiological potential. Thus, vigor tests are used in combination with germination tests. The objective of this work was to evaluate the quality of carrot seeds from different umbel order and the electrical conductivity under different temperatures and imbibing periods. Carrot seeds from cultivar Brasilia were used to perform the experiments. Content of water, the first and the final score of the germination test, index of germination rate, and length of roots and of the aerial portion were determined in the initial characterization. The electrical conductivity test was completed with replicates containing 50 seeds, in 25 mL deionized water at 20, 25 and 30oC. Evaluations were performed with 2, 4, 6, 8, 12 and 24 hours of imbibing period. The experiment was accomplished under a completely random statistical design. The quality of carrot seeds varied according to the umbel order. Seeds of secondary umbels showed better physiological quality. The electrical conductivity test is efficient to evaluate the vigor of carrot seeds with 8 hours of imbibing period at 25°C.

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Tests for evaluating the physiological quality of pitaya seeds

Semina Ciências Agrárias ◽

10.5433/1679-0359.2015v36n6sup2p4047 ◽

2015 ◽

Vol 36 (6Supl2) ◽

pp. 4047

Author(s):

Thiago Alberto Ortiz ◽

Aline Moritz ◽

Lúcia Sadayo Assari Takahashi ◽

Mariana Ragassi Urbano

Keyword(s):

Electrical Conductivity ◽

Pearson Correlation ◽

Accelerated Aging ◽

Seed Vigor ◽

Water Volume ◽

Germination Test ◽

Accelerated Aging Test ◽

Aging Test ◽

Physiological Quality

Germination test is used to assess the physiological quality of seeds; however, since it is carried out under ideal conditions, this test has not been shown sufficient for this purpose. Instead, it is possible to use vigor tests, although the lack of standardized methodologies has reduced their applicability and reproducibility. Thus, this study aimed to develop methodologies for conducting tests of germination, accelerated aging, and electrical conductivity for the evaluation of the physiological quality of pitaya seeds. For this purpose, seeds from ripe Hylocereus undatus fruits were used. A completely randomized experimental design was used with four replications. The physiological quality of the seeds was assessed using germination, accelerated aging, and electrical conductivity tests, and the speed of germination index (SGI) and mean germination time (MGT) were determined for both the germination test and accelerated aging test. For the statistical analysis, we performed regression model adjustments and calculated the Pearson correlation coefficient (p < 0.05). The germination test for H. undatus seeds can be performed at 25 °C, with the aim of reaching the highest SGI and lowest MGT values. The accelerated aging test can be conducted at 43 °C for 48 h, because combining these factors favors the expression of seed vigor, allowing seeds to achieve the maximum SGI and minimum MGT, while reducing the time of the assay. The electrical conductivity test can be performed using 25 seeds at a temperature of 30 °C and a water volume of 10 mL, since under these conditions there is less interference from external factors on the leachate content of the solution.

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Evaluation of the seedvigor of Tournefortia paniculata Cham. post-digestive tract of the ruby-crowned tanager Tachyphonus coronatus (Vieillot, 1822)

Ciência e Natura ◽

10.5902/2179460x36737 ◽

2019 ◽

Vol 41 ◽

pp. 15

Author(s):

Sérgio Thode Filho ◽

Heider Alves Franco ◽

Emanuele Nunes de Lima Figueiredo Jorge ◽

Mariana De Souza Oliveira ◽

Jhon Lenon Genovez de Oliveira ◽

...

Keyword(s):

Electrical Conductivity ◽

Digestive Tract ◽

Digestive System ◽

Forest Species ◽

Ecological Process ◽

Germination Test ◽

Individual Level ◽

Physiological Quality ◽

The Individual

Endozoochory (dispersion with passage through the digestive system of animals) is one of the most important processes. It is included in the ecological process known as dispersive mutualism, benefit the species involved. The most used method to evaluate the physiological quality of seeds is carried out based on the traditional germination test. However, electrical conductivity tests with seeds of forest species are still scarce, especially those developed with the individual method, which provide greater fidelity to the results so that through this one can define the test by the mass methods. The current work aimed to investigate the vigor, from the electrical conductivity of the seeds of Tournefortia paniculata Cham. after passage through the digestive tract of a ruby-crowned tanager Tachyphonus coronatus (Vieillot, 1822). An expedition was conducted in a fragmented area of Atlantic Forest in process of reforestation in the campus of the IFRJ. After the capture of the passerine with mist nets, proceeded the identification of seeds shed in its feces. The experimental design was completely randomized with one treatments with five replicates. The results allowed concluded that the seed of the T. paniculata Cham. after digestive tract of the ruby-crowned tanager presented high electrical conductivity in three of its replicates at the individual level.

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Spray volumes in the industrial treatment on the physiological quality of soybean seeds with different levels of vigor

Journal of Seed Science ◽

10.1590/2317-1545v39n2175179 ◽

2017 ◽

Vol 39 (2) ◽

pp. 174-181 ◽

Cited By ~ 7

Author(s):

Cristian Rafael Brzezinski ◽

Julia Abati ◽

Fernando Augusto Henning ◽

Ademir Assis Henning ◽

José de Barros França Neto ◽

...

Keyword(s):

Experimental Design ◽

Bradyrhizobium Japonicum ◽

Seed Quality ◽

Seedling Emergence ◽

Seed Vigor ◽

Soybean Seeds ◽

Germination Test ◽

Physiological Quality ◽

Different Levels

Abstract: The aim of this work was to evaluate the effect of different spray volumes, via industrial treatment, on the physiological quality of soybean seeds with different levels of vigor. The experimental design was completely randomized in a 2x5 factor scheme, with four replications. Factors consisted in two levels of seed vigor (high and low) and five spray volumes (0, 600, 1200, 1800 and 2400 mL. 100 kg-1). Products used to obtain the volumes were: fungicide (carbendazin + thiram); insecticide (imidacloprid + thiodicarb); nematicide (abamectin); micronutrients (cobalt, molybdenum and zinc); polymer (peridiam); biostimulants (kinetin + gibberellic acid) and inoculum (Bradyrhizobium japonicum). The used cultivars were BRS 360 RR and BRS 1010 IPRO. The physiological seed quality was determined by the following evaluations: germination, first count of the germination test, seedling emergence in sand, emergency speed index, total length of shoot and root of the seedlings. In the different spray volumes, high vigor soybean seeds have higher physiological quality than low vigor seeds. The increased spray volumes in seed treatments reduce the physiological quality of low vigor soybean seeds.

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Physical and physiological quality of the Lippia rotundifolia seeds according to the osmotic conditioning and electrical conductivity

Ciência Rural ◽

10.1590/0103-8478cr20150633 ◽

2016 ◽

Vol 46 (12) ◽

pp. 2096-2102

Author(s):

Messulan Rodrigues Meira ◽

Ernane Ronie Martins ◽

Luciane Vilela Resende

Keyword(s):

Electrical Conductivity ◽

Experimental Design ◽

Essential Oil ◽

Native Species ◽

Physiological Quality ◽

Seed Husk ◽

Proportional Relationship ◽

Medicinal Properties

ABSTRACT: Lippia rotundifolia is a native species of the Cerrado, endemic to the chain backbone and highly aromatic, whose essential oil has medicinal properties of high pharmacological value, but because it is a non-domesticated species, little is known about its spread. Due to its importance, the objective was to evaluate the effect of the osmotic conditioning on the physical and physiological quality of seeds. The experimental design was completely randomized with four replications of 100 seeds, being treatments consisted of two kinds of seeds (with and without tegument) subjected to ten days of immersion in water (0, 2, 4, 6, 12, 24, 48, 72, 96 and 120 hours). After each period, the seeds were submitted to the electrical conductivity test and germination. Electrical conductivity and germination there is a directly proportional relationship, while the best osmotic conditioning time is achieved with the seed husk and immersed in water for 48 hours.

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Pre-packing cooling and types of packages in maintaining physiological quality of soybean seeds during storage

Journal of Seed Science ◽

10.1590/2317-1545v38n2158956 ◽

2016 ◽

Vol 38 (2) ◽

pp. 129-139 ◽

Cited By ~ 4

Author(s):

Everson Reis Carvalho ◽

João Almir Oliveira ◽

Denilson Paulo da Rosa Mavaieie ◽

Hellismar Wakson da Silva ◽

Cassiano Gabriel Moreira Lopes

Keyword(s):

Electrical Conductivity ◽

Experimental Design ◽

Seed Mass ◽

Accelerated Aging ◽

Soybean Seeds ◽

Randomized Experimental Design ◽

Deterioration Process ◽

Physiological Quality ◽

Polyethylene Container

Abstract: Seeds storing under appropriate conditions reduces the speed of the seeds deterioration process. The aim of this study was to evaluate pre-packing cooling and types of packages in the maintenance of the physiological quality of soybean seeds during storage. The completely randomized experimental design was used, with four replications, considering a factorial arrangement involving or not the pre-packing cooling of the seed mass, three types of packages (multi-layer paper bag, big bag, and polyethylene container), and five storing periods (0, 2, 4, 6 and 8 months). The physiological quality was evaluated by the tests of first germination count, germination, accelerated aging, electrical conductivity, emergence speed index and emergence. The use of packages with larger amount of seeds (big bag and polyethylene container) did not favor the maintenance of the pre-packing cooling temperature. The types of packages did not show significant differences in the seeds viability during storage, up to eight months, regardless the pre-packing cooling. The cultivars seeds showed different tolerance to storing, i.e. seeds of the cultivar TMG 1176 had lower storing potential comparing to the seeds from the cultivar SYN 9074.

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Prior disinfestation of irrigated rice seeds under laboratory conditions favors expression of physiological potential

Revista de Ciências Agroveterinárias ◽

10.5965/223811711942020494 ◽

2020 ◽

Vol 19 (4) ◽

pp. 494-497

Author(s):

Bruno Tabarelli Scheidt ◽

Jaquelini Garcia ◽

Ricardo Trezzi Casa ◽

Cileide Maria Medeiros Coelho ◽

Juliano Berghetti

Keyword(s):

Experimental Design ◽

State University ◽

Germination Test ◽

Irrigated Rice ◽

Seed Analysis ◽

Randomized Experimental Design ◽

Physiological Quality ◽

Analysis Laboratory ◽

Rice Seeds

The purpose of this study was to analyze prior seed disinfestation of irrigated rice seeds with sodium hypochlorite and its effect on physiological quality. The experiment was conducted in the seed analysis laboratory of Santa Catarina State University (UDESC). Twenty-four (four per cultivar) seed lots of the cultivars SCSBRS Tio Taka, Epagri 109, SCS116 Satoru, SCS118 Marquês, SCS121 CL, and SCS122 Miura, produced in the Upper Itajaí Valley in the 2016/2017 season, were used in a completely randomized experimental design with four replications. Germination and vigor tests were performed with and without disinfestation seeds. For the germination test with disinfected seeds, there was a higher percentage of normal seedlings and a smaller number of abnormal seedlings and dead seeds. There was significant decrease in vigor without prior seed disinfestation. The fungi that infested the seeds caused an increase in the percentage of abnormal seedlings and dead seeds. Seed disinfestation prior to physiological test positively affects the results regarding the physiological quality of irrigated rice seeds.

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Physiological quality of soybean seeds treated with imidacloprid before and after storage

Plant Soil and Environment ◽

10.17221/364/2020-pse ◽

2020 ◽

Vol 66 (No. 10) ◽

pp. 513-518

Author(s):

Renata Cristiane Pereira ◽

Murilo Fuentes Pelloso ◽

Larissa Vinis Correia ◽

Thaisa Cavalieri Matera ◽

Rayssa Fernanda dos Santos ◽

...

Keyword(s):

Electrical Conductivity ◽

Seed Treatment ◽

Seedling Emergence ◽

Accelerated Aging ◽

Soybean Seeds ◽

Germination Test ◽

Soybean Cultivars ◽

Before And After ◽

Physiological Quality

This study aimed to evaluate the effect of different slurry volume of imidacloprid insecticide on the physiological potential during the storage of seeds of three soybean cultivars. A completely randomised experimental design was adopted, in a 6 × 3 × 2 factorial scheme, which treatments were six slurry volumes with imidacloprid insecticide (0, 200, 500, 800, 1 100 and 1 400 mL/100 kg of seeds), 3 soybean cultivars (SYN15630, M5947, and NS5959) and 2 storage periods (0 and 30 days after seed treatment), with four replications. The treated seeds were stored in kraft paper bags with controlled temperature and humidity. The physiological potential of the seeds was evaluated by standard germination test, electrical conductivity, accelerated aging, seedling emergence in the sand seedbed, and the field. The germination and vigor of soybean seeds were reduced during storage, especially with the increase in the volumes of the insecticide solution.

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Tests for evaluating the physiological quality of pitaya seeds

Semina Ciências Agrárias ◽

10.5433/1679-0359.2015v36n6supl2p4047 ◽

2015 ◽

Vol 36 (6Supl2) ◽

pp. 4047

Author(s):

Thiago Alberto Ortiz ◽

Aline Moritz ◽

Lúcia Sadayo Assari Takahashi ◽

Mariana Ragassi Urbano

Keyword(s):

Electrical Conductivity ◽

Pearson Correlation ◽

Accelerated Aging ◽

Seed Vigor ◽

Water Volume ◽

Germination Test ◽

Accelerated Aging Test ◽

Aging Test ◽

Physiological Quality

Germination test is used to assess the physiological quality of seeds; however, since it is carried out under ideal conditions, this test has not been shown sufficient for this purpose. Instead, it is possible to use vigor tests, although the lack of standardized methodologies has reduced their applicability and reproducibility. Thus, this study aimed to develop methodologies for conducting tests of germination, accelerated aging, and electrical conductivity for the evaluation of the physiological quality of pitaya seeds. For this purpose, seeds from ripe Hylocereus undatus fruits were used. A completely randomized experimental design was used with four replications. The physiological quality of the seeds was assessed using germination, accelerated aging, and electrical conductivity tests, and the speed of germination index (SGI) and mean germination time (MGT) were determined for both the germination test and accelerated aging test. For the statistical analysis, we performed regression model adjustments and calculated the Pearson correlation coefficient (p < 0.05). The germination test for H. undatus seeds can be performed at 25 °C, with the aim of reaching the highest SGI and lowest MGT values. The accelerated aging test can be conducted at 43 °C for 48 h, because combining these factors favors the expression of seed vigor, allowing seeds to achieve the maximum SGI and minimum MGT, while reducing the time of the assay. The electrical conductivity test can be performed using 25 seeds at a temperature of 30 °C and a water volume of 10 mL, since under these conditions there is less interference from external factors on the leachate content of the solution.

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Sensory and physiological quality of arabic coffee under different fermentation times

Bioscience Journal ◽

10.14393/bj-v36n2a2020-43255 ◽

2020 ◽

Vol 36 (2) ◽

Author(s):

Kênia Barbosa do Carmo ◽

Jéssica Conceição Barbosa do Carmo ◽

Marcelo Rodrigo Krause ◽

Guilherme Peterle

Keyword(s):

Electrical Conductivity ◽

Experimental Design ◽

Water Content ◽

Dry Mass ◽

Fresh Mass ◽

Drying Process ◽

Sensorial Analysis ◽

Fermentation Time ◽

Physiological Quality

The value of coffee presents a significant increase influenced by the improvement of the beans quality, so that a coffee made by beans with an inferior quality has a lower acceptance in the market and a reduction in therms of commercialization value. The different time of fermentation of the coffee in water can give rise to different beverage and physiological quality of its seeds, and may interfere in its commercialization value and in the production of seedlings in nurseries. The target of this study was to identify the best time of fermentation of the beans and seeds of Arabic coffee in the region of Mutum-MG, aiming to obtain a better quality of the drink and a better physiological quality of the seeds. The experimental design was completely randomized with seven treatments, 0, 6, 12, 18, 24, 30 and 36 hours of fermentation in water. Four replicates per treatment were used. Each repetition consisted in ten liters of coffee. The samples were submitted to a drying process in covered suspended terrarium until reaching 12% moisture. The evaluations consisted in the realization of these sensorial analysis (AS); % water content (%U); electrical conductivity (EC); first germination count (FCG); percentage of germination (%G); total fresh mass (TFM); total dry mass (TDM) and radicle length (RL). The 18 hours fermentation time provided a better quality of coffee drink obtaining a score of 84 points and also resulted in a higher physiological quality of the seeds. Excess fermentation impaired the quality of the drink and physiological quality.

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