scholarly journals Seed quality of common bean accessions under organic and conventional farming systems1

2017 ◽  
Vol 47 (2) ◽  
pp. 152-160 ◽  
Author(s):  
Diego Medeiros Gindri ◽  
Cileide Maria Medeiros Coelho ◽  
Clovis Arruda Souza ◽  
Isaac Heberle ◽  
Heitor Amadeu Prezzi
Keyword(s):  
Common Bean ◽  
Seed Quality ◽  
Accelerated Aging ◽  
Farming Systems ◽  
Cold Test ◽  
Germination Percentage ◽  
Conventional Farming ◽  
Physiological Quality ◽  
Organic And Conventional Farming

ABSTRACT Agrobiodiversity is essential for a sustainable food production, and the knowledge of the potential characteristics of landrace seeds may prompt farmers to adopt the habit of seed conservation for this species. This study aimed at categorizing landrace and commercial common bean (Phaseolus vulgaris L.) accessions, according to the physiological quality (viability and vigor) of seeds produced in the field, during two growing seasons, under organic and conventional farming systems. Germination percentage, field emergence, electrical conductivity, accelerated aging, cold test and seedling length were assessed. The landrace bean accessions exhibit diversity in the physiological seed quality, in terms of their viability and vigor. No differences were observed between the farming systems, in relation to the physiological quality of the seeds produced. The categorization of landrace common bean accessions allows to identify those with superior physiological seed quality.

scholarly journals Oil composition and physiological quality of niger seeds after drying

2020 ◽  
Vol 42 ◽  
pp. e44398
Author(s):  
Wellytton Darci Quequeto ◽  
Valdiney Cambuy Siqueira ◽  
Carlos Eduardo Domingues Nazario ◽  
Maria Heloisa Junqueira ◽  
Vanderleia Schoeninger ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Fatty Acid Profile ◽  
Seed Quality ◽  
Renewable Energy Sources ◽  
Accelerated Aging ◽  
Cold Test ◽  
Oil Composition ◽  
Air Temperatures ◽  
Physiological Quality

With the depletion of fossil fuel resources accelerating the search for renewable energy sources, studies on agricultural products containing a significant amount of oil in their compositions have intensified. The objective of this work was to investigate the fatty acid profile and the physiological quality of the oil extracted from niger seeds dried at different temperatures. The seeds were dried at 40, 50, 60, and 70°C, until their moisture content reached 8.5 ± 1% (wet basis). The physiological properties of niger seeds were determined by assessing their germination, germination speed index, mean germination time, cold test, accelerated aging with a saturated solution, emergence percentage, and emergence speed index. The quality of the oil was evaluated using gas chromatography, based on the fatty acid profile. We concluded that drying air temperatures of 40 and 50°C did not compromise the physiological quality of niger seeds. However, the 70°C drying temperature seriously impaired seed quality. The drying temperatures that were used in this study did not substantially alter the fatty acid profile of niger oil.

scholarly journals Physiological Potential of Bean Seeds under Different Storage Temperatures

2017 ◽  
Vol 9 (12) ◽  
pp. 82
Author(s):  
Camila Hendges ◽  
Douglas Luzzi ◽  
Ricardo Walcker ◽  
Jéssica Inês Finger ◽  
Donizete Batista Carmelo ◽  
...  
Keyword(s):  
Seed Quality ◽  
Storage Temperature ◽  
Seed Mass ◽  
Accelerated Aging ◽  
Numerical Data ◽  
Cold Test ◽  
Temperature Conditions ◽  
Physiological Quality ◽  
Storage Temperatures

Stored beans have active metabolism and respiration may cause significant quality losses. Therefore, some care is necessary during this period, aiming at maintaining the physiological quality of seeds, minimizing their deterioration and reducing their germinative power. Seed quality during storage may be influenced by environmental factors and the interaction of genotypes with the environment. The objective was to evaluate the germination and vigor of bean seeds after 90-days storage under different temperature conditions. The experiment was conducted under a completely randomized design, with four replications, in 3 × 2 factorial scheme, considering three storage temperatures (10 °C, 20 °C and 30 °C) and two storage times (0 and 90 days). For potential evaluation, the following characteristics were considered: moisture content, thousand seed mass, germination, electrical conductivity, accelerated aging and cold test. Numerical data were submitted variance analysis with averages compared by means test at 5% of significance. Results showed that storage temperature conditions directly affect physiological quality of bean seeds. Temperature of 10 °C provided better seed conservation whereas temperature of 30 °C promoted higher deterioration and reduced vigor.

scholarly journals PHYSIOLOGICAL AND SANITARY QUALITIES OF MAIZE LANDRACE SEEDS STORED UNDER TWO CONDITIONS

2015 ◽  
Vol 39 (4) ◽  
pp. 339-347 ◽  
Author(s):  
Raquel Stefanello ◽  
Marlove Fátima Brião Muniz ◽  
Ubirajara Russi Nunes ◽  
Cláudia Braga Dutra ◽  
Iana Somavilla
Keyword(s):  
Seed Quality ◽  
Accelerated Aging ◽  
Storage Period ◽  
Cold Test ◽  
Maize Seed ◽  
Maize Landrace ◽  
Maize Seeds ◽  
Plastic Bag ◽  
Physiological Quality

The preservation of seed quality during the storage period depends not only on the conditions during production and harvesting but also on the storage and maintenance of appropriate storage product conditions. Thus, the aim of this study was to evaluate the physiological and sanitary qualities of maize landrace seeds stored under two conditions. The maize seed batch varieties Oito carreiras, Cabo roxo and Lombo baio were used. Tests included germination, first count, cold test, accelerated aging and sanity. Based on the results it was concluded that the physiological quality of these seed varieties decreased with the storage period. The major fungi identified in the maize seeds during storage were from the genera Aspergillus, Fusarium and Penicillium, which caused deterioration and reduction of the physiological quality. Storage using a paper bag at a temperature of 10 °C did not prevent the deterioration of maize seeds but was more effective at preserving the quality of the seed compared with a plastic bag at room temperature.

scholarly journals PHYSIOLOGICAL QUALITY OF SOYBEAN SEEDS DEPENDING ON THE PREHARVEST DESICCATION

2015 ◽  
Vol 33 (3) ◽  
pp. 441-450 ◽  
Author(s):  
T. PEREIRA ◽  
C. M. M. COELHO ◽  
M. SOBIECKI ◽  
C. A. SOUZA
Keyword(s):  
Seed Quality ◽  
Accelerated Aging ◽  
Cold Test ◽  
Active Principle ◽  
Growth Stages ◽  
Soybean Seeds ◽  
Glufosinate Ammonium ◽  
Accelerated Aging Test ◽  
Physiological Quality

ABSTRACTDepending on the cultivar, the use of desiccants in the preharvest can favor maintenance of physiological quality. The objective of the study was to assess the physiological quality of soybean seeds as due to the use of apreharvest desiccant and desiccation time in two harvests (2011/12 and 2012/13). The treatments were five soybean cultivars, two growth stages of application, a control (without desiccant application), and three desiccants (glufosinate-ammonium, carfentrazone-ethyl and paraquat) (2011/12 harvest). In the 2012/13 harvest the carfentrazone-ethyl desiccant was replaced by diquat. The physiological quality of seeds was assessed by the percentage of viability and vigor (cold test, tetrazolium test and accelerated aging test). In 2011/12 harvest, there was an early harvest in six days with the use of glufosinate-ammonium and paraquat desiccants, when desiccation was done in stage R7.1, with maintenance of seed quality; however it was dependent on the cultivar. In the 2012/13 harvest there was no early harvesting due to the presence of rain in the preharvest and the use of desiccation did not affect the physiological quality of the seeds either. Cultivar NA5909 RG was more tolerant to remaining in the cultivation environment and maintained higher viability than 90% and greater vigor of 71% by the cold test compared to cultivar BMX Turbo (2011/12 harvest). It is concluded that desiccation can be a viable alternative to the soybean early harvesting, but it depends on the cultivar, the time of desiccation, the active principle of the desiccant and the absence of rain in preharvest.

scholarly journals Lignification of the plant and seed quality of RR soybeans sprayed with herbicide glyphosate

Revista CERES ◽  
2013 ◽  
Vol 60 (2) ◽  
pp. 286-292
Author(s):  
Cristiane Fortes Gris ◽  
Edila Vilela de Resende Von Pinho ◽  
Maria Laene de Moreira Carvalho ◽  
Rafael Parreira Diniz ◽  
Thaís de Andrade
Keyword(s):  
Seed Quality ◽  
Lignin Content ◽  
Block Design ◽  
Accelerated Aging ◽  
Soybean Seeds ◽  
Randomized Block Design ◽  
Physiological Quality ◽  
Hand Weeding ◽  
Herbicide Glyphosate

Differences in levels of lignin in the plant between conventional and transgenic cultivars RR has been reported by several authors, however, there are few studies evaluating the influence of spraying of glyphosate on the lignin in the plant and RR soybean seeds. The aim of this study was to evaluate the physiological quality of RR transgenic soybean seeds and the lignin contents of plants sprayed with the herbicide glyphosate. The assays were conducted both in greenhouse and field in the municipality of Lavras, MG, in the agricultural year 2007/08. The experiment was arranged in a splitplot design with four replicates, considering the treatments hand weeding and herbicide glyphosate as plots, and five RR soybean cultivars (BRS 245 RR, BRS 247 RR, Valiosa RR, Silvânia RR and Baliza RR) as splitplots. In the greenhouse, the cultivars tested were BRS 245 RR and Valiosa RR in a randomized block design with four replicates. The sprayings were carried out at stages V3, V7 and early R5 (3L/ha). The 1000 seed weight, mechanical injury, germination and germination velocity index, emergence velocity index, accelerated aging, electrical conductivity and water soaking seed test, lignin content in the seed coat, in the stem and legumes were determined. The spraying of glyphosate herbicide, in greenhouse and field, did not alter the physiological quality of seeds and the lignin contents in the plant.

scholarly journals Physiological quality of dynamically cooled and stored soybean seeds

2013 ◽  
Vol 35 (3) ◽  
pp. 353-360 ◽  
Author(s):  
Jacson Zuchi ◽  
José de Barros França-Neto ◽  
Carlos Sigueyuki Sediyama ◽  
Adílio Flauzino de Lacerda Filho ◽  
Múcio Silva Reis
Keyword(s):  
Dynamic Process ◽  
Seed Quality ◽  
Seedling Emergence ◽  
Accelerated Aging ◽  
Superior Performance ◽  
Soybean Seeds ◽  
Tropical Regions ◽  
Physiological Quality ◽  
Feasible Alternative

Storage is an important step in the production of soybean seeds, mainly in tropical regions, where high temperatures can drastically reduce seed quality. The storage at cooler temperatures may be a feasible alternative to preserve seed quality during storage. The objective of this study was to evaluate the physiological quality of soybean seeds artificially cooled by a dynamic process and stored in an environment, with non controlled temperature and relativity humidity. Two seed lots of cultivars Monsoy 8757, TMG 115 RR and BRS Valiosa RR were used. After processing and during packaging the seeds were cooled to 18 ºC by a dynamic process. Seed samples were collected after 0, 60 and 120 days of storage, using the following parameters germination, accelerated aging, seedling emergence in sand, speed of emergence index, electrical conductivity, tetrazolium and seed health. Although soybean seeds artificially cooled by the dynamic method may have slightly superior performance in maintaining physiological quality during storage in non-refrigerated warehouse, for lots of high physiological quality, these advantages are not observed.

scholarly journals Fruit maturation stage on the physiological quality of maroon cucumber seeds

2019 ◽  
Vol 49 ◽  
Author(s):  
Cleisson Dener da Silva ◽  
Andréia Márcia Santos de Souza David ◽  
Josiane Cantuária Figueiredo ◽  
Jorge Luiz Rodrigues Barbosa ◽  
Rayane Aguiar Alves
Keyword(s):  
Seed Quality ◽  
Seedling Emergence ◽  
Accelerated Aging ◽  
Dry Mass ◽  
Maturation Stage ◽  
Physiological Maturity ◽  
Physiological Quality ◽  
Photography Analysis ◽  
The Ideal

ABSTRACT To obtain seeds of high physiological quality, it is of paramount importance to define the ideal harvest moment, which oftentimes corresponds to the period when the physiological maturity is reached. This experiment aimed to study the maturation process and determine the best harvest season of maroon cucumber fruits (Liso Gibão cultivar), in order to reach the maximum physiological seed quality. The flowers were labeled during the anthesis and the fruits harvested at 14, 21, 28, 35, 42, 49 and 56 days after the anthesis (DAA). The fruits had their visual aspects registered by photography analysis and, later, the seeds were extracted for physical (water and dry matter contents) and physiological (germination, seedling emergence, emergence speed index, accelerated aging and electrical conductivity) analyses. It was observed that the seeds reach the maximum dry mass (8.08 mg seed-1) between 47 and 49 DAA. However, the seed physiological maturity, characterized by a maximum germination (70 %) and vigor, occurs at 56 DDA. The best season to harvest seeds with a higher physiological quality takes place from 49 to 56 DDA, when the fruits present a yellowish color.

scholarly journals Effect of drying, pelliculation and storage on the physiological quality of eggplant seeds

2014 ◽  
Vol 36 (2) ◽  
pp. 240-245 ◽  
Author(s):  
Natassia Zamariola ◽  
João Almir Oliveira ◽  
Luiz Antônio Augusto Gomes ◽  
Michelle Fonseca Jácome ◽  
Leandro Vilela Reis
Keyword(s):  
Seed Quality ◽  
Seedling Emergence ◽  
Film Coating ◽  
Germination Percentage ◽  
Hybrid Seeds ◽  
Physiological Quality ◽  
Forced Air ◽  
Air Circulation ◽  
And Storage

The use of methods and technologies such as drying and film coating can bring significant contributions to the farmer. This experiment was conducted in order to evaluate the effect of drying and film coating on the physiological quality of eggplant seeds during storage. Hybrid seeds UGA MS1 produced by the company Hortiagro - Ijaci, MG were used. Seeds were subjected to two types of drying: slow (room temperature) and quick (oven with forced air circulation at 35 ºC). The chemical treatment was performed with the Captan product at a dose of 250 grams per 100 kilograms of seed and for the recoating were used three doses of polymer: (0, 3 and 6 mL.kg-1 of seeds). The physiological quality of seeds was evaluated every three months until reaching the period of nine months using germination test, seedling emergence test and seedling establishment. There is a reduction of physiological seed quality during the storage. The slow drying of eggplant seeds results in better quality seeds. The use of polymer reduces the germination percentage, germination speed index and the percentage of seedling emergence.

scholarly journals POTENCIAL FISIOLÓGICO DE SEMENTES DE SOJA PRODUZIDAS COM ADUBO FOLIAR FOSFATADO

2020 ◽  
Vol 35 (3) ◽  
pp. 447-456
Author(s):  
Camila Gianlupi ◽  
Tathiana Elisa Masetto ◽  
João Miguel Azevedo ◽  
César Pedro Hartmann Filho ◽  
José Vinícius dos Santos Zanzi
Keyword(s):  
Glycine Max ◽  
Accelerated Aging ◽  
Cold Test ◽  
Soybean Seeds ◽  
Foliar Fertilization ◽  
Foliar Fertilizer ◽  
High Germination ◽  
Phosphate Fertilization ◽  
Physiological Quality

POTENCIAL FISIOLÓGICO DE SEMENTES DE SOJA PRODUZIDAS COM ADUBO FOLIAR FOSFATADO   CAMILA GIANLUPI1, TATHIANA ELISA MASETTO2, JOÃO MIGUEL AZEVEDO3, CÉSAR PEDRO HARTMANN FILHO4, JOSÉ VINÍCIUS DOS SANTOS ZANZI5   1 Faculdade de Ciências Agrárias, Universidade Federal da Grande Dourados, Rodovia Dourados-Itahum, 79804-970, Dourados-MS, Brasil, [email protected]. 2 Faculdade de Ciências Agrárias, Universidade Federal da Grande Dourados, Rodovia Dourados-Itahum, 79804-970, Dourados-MS, Brasil, [email protected]. 3 Faculdade de Ciências Agrárias, Universidade Federal da Grande Dourados, Rodovia Dourados-Itahum, 79804-970, Dourados-MS, Brasil, [email protected]. 4 Faculdade de Ciências Agrárias, Universidade Federal da Grande Dourados, Rodovia Dourados-Itahum, 79804-970, Dourados-MS, Brasil, [email protected] 5 Faculdade de Ciências Agrárias, Universidade Federal da Grande Dourados, Rodovia Dourados-Itahum, 79804-970, Dourados-MS, Brasil, [email protected]   RESUMO: O fósforo é um dos macronutrientes mais limitantes à produtividade da soja e pode influenciar na qualidade fisiológica das sementes. O objetivo deste trabalho foi avaliar o efeito da adubação foliar com fósforo aplicada em diferentes estádios de desenvolvimento, na produtividade e no potencial fisiológico de sementes de soja cultivar M6410 IPRO recém-colhidas e após o armazenamento por 180 dias em condições controladas. Foi avaliada a influência do adubo foliar fosfatado nos seguintes estádios de desenvolvimento “V5, R2, R4, V5+R2, V5+R4, R2+R4 e V5+R2+R4” na dose de 2,0 l ha-1. A qualidade fisiológica das sementes foi avaliada por meio da germinação, primeira contagem, índice de velocidade de germinação e emergência, envelhecimento acelerado, teste de frio, emergência a campo, tetrazólio e desempenho de plântulas. Os componentes de produtividade de sementes de soja não foram influenciados pela aplicação de adubo foliar com fósforo nas diferentes fases fenológicas. A aplicação nos estádios V5 e V5+R2+R4 proporcionou sementes com elevada germinação e vigor, no entanto, o armazenamento por 180 dias mesmo sob condições controladas prejudica o potencial fisiológico das sementes.   Palavras-chaves: Glycine max, adubação fosfatada, vigor, armazenamento.   PHYSIOLOGICAL POTENTIAL OF SOYBEAN SEEDS PRODUCED WITH PHOSPHATE FOLIAR FERTILIZER   ABSTRACT: Phosphorus is one of the most limiting macronutrients for soybean productivity, and it may influence the physiological quality of seeds. The focus of this study was to evaluate the effect of foliar fertilization with phosphorus used in different plant stages in productivity and physiological quality of soybean seeds cv. M6410 IPRO. The influence of foliar fertilization was measured in different plant stages of development “V5, R2, R4, V5+R2, V5+R4, R2+R4 e V5+R2+R4” and the dose was 2,0 l ha-1. The physiological quality of seeds was evaluated by germination, first score, rate of germination speed and emergence speed, field conditions emergence, tetrazolium test, seedlings performance, cold test and accelerated aging. The yield components of soybean seeds were not influenced by the period of foliar fertilization application with phosphorus. The application on V5 and V5+R2+R4 stages provided seeds with high germination and vigor. However, storage for 180 days even under controlled conditions reduced the seeds physiological potential.   Keywords: Glycine max, phosphate fertilization, vigor, storage.  

scholarly journals Soybean (Glycine max L.) seed quality treated with timbó (Magonia pubescens A.St.-Hil) seed coat

2020 ◽  
Vol 87 ◽  
Author(s):  
Ana Mayra Pereira Silva ◽  
Amanda Ribeiro Correa ◽  
Cárita Rodrigues de Aquino Arantes ◽  
Rosiane Alexandre Pena Guimarães ◽  
Maria de Fátima Barbosa Coelho ◽  
...  
Keyword(s):  
Seed Coat ◽  
Seed Quality ◽  
Accelerated Aging ◽  
Dry Mass ◽  
Seed Extract ◽  
Soybean Seeds ◽  
Hydroalcoholic Extract ◽  
Physiological Quality ◽  
Glycine Max L

ABSTRACT: The objective of this study was to evaluate the effect of timbó seed coat on the physiological and sanitary quality of soybean seeds. Timbó seeds were collected from mature fruits in the Cerrado. The external layer of the seed coat was removed and crushed in a mill and used in the treatment of soybean seeds. Three lots of soybean seeds were used, from high, medium and low vigor seeds. The treatments were: powder; gel; hydroalcoholic extract; synthetic fungicide (Vitavax® - Thiram 200 sc), and untreated seeds. The physiological quality of the soybean seeds was determined by standard germination, accelerated aging, length, fresh and dry mass of seedlings. Blotter test was used to determine the sanitary quality. The statistical analyze used was a completely randomized 3 × 5 factorial design, considering three seed lots and five treatments. Treatment with the coat seed extract and gel improves the physiological quality of soybean seeds from low vigor lots. The treatment of seeds with gel decreases the incidence of Fusarium and Penicillium genus; and treatment with the powder reduced the incidence of the Cercospora genus.

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