scholarly journals Physiological quality of soybean seeds produced under artificial rain in the pre-harvesting period

2016 ◽  
Vol 38 (1) ◽  
pp. 14-21 ◽  
Author(s):  
Elisa de Melo Castro ◽  
João Almir Oliveira ◽  
Amador Eduardo de Lima ◽  
Heloísa Oliveira dos Santos ◽  
José Igor Lopes Barbosa
Keyword(s):  
Lignin Content ◽  
Block Design ◽  
Seedling Emergence ◽  
Accelerated Aging ◽  
Moisture Damage ◽  
Soybean Cultivars ◽  
Randomized Block Design ◽  
Physiological Quality ◽  
Storage Times

Abstract: The objective of this experiment was to evaluate responses of soybean cultivars seeds (with different levels of lignin) considering harvest postponement under the incidence of water and the effect of storage. The experiment was conducted in Iraí de Minas, Brazil using a randomized block design with three replications under a 5 x 3 x 3 factorial arrangement, with five soybean cultivars (NK 7059 RR, SYN 1163 RR, SYN 9070 RR, AS 7307 RR and SYN 1283 RR), three harvesting periods (R8, R8 + one rain simulation in the pre-harvesting period and R8 + two simulations in the pre-harvesting period) under three storage times (0, 90 and 180 days). Seeds were evaluated for their chemical composition (lignin contents), the percentage of moisture damage using the tetrazolium test and physiological quality (germination, accelerated aging, conductivity test, seedling emergence and emergence index). Cultivar AS 7307 RR had the highest lignin content in the integument, the lowest percentage of damage by moisture and the highest physiological quality. Cultivars NK 7059 RR and SYN 1163 RR had the lowest lignin contents in the integument and the highest moisture damage. Electrical conductivity increased after storing all cultivars.

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 Effect of storage period on isoflavone content and physiological quality of conventional and transgenic soybean seeds

2011 ◽  
Vol 33 (1) ◽  
pp. 149-161 ◽  
Author(s):  
Marizangela Rizzatti Ávila ◽  
Alessandro de Lucca Braccini ◽  
Leandro Paiola Albrecht ◽  
Carlos Alberto Scapim ◽  
José Marcos Gontijo Mandarino ◽  
...  
Keyword(s):  
Block Design ◽  
Accelerated Aging ◽  
Storage Period ◽  
Transgenic Soybean ◽  
Soybean Cultivars ◽  
Randomized Block Design ◽  
Isoflavone Content ◽  
Before And After ◽  
Physiological Quality

The objective in this research was to evaluate the isoflavone content and the physiological quality of seed from conventional and transgenic soybean cultivars before and after 180 days of storage. Twenty one soybean cultivars: CD 202, CD 206, CD 208, CD 213RR, CD 214RR, CD 215, CD 216, CD 217, CD 218, CD 221, BRS 184, BRS 185, BRS 214, BRS 244RR, BRS 245RR, BRS 246RR, BRS 255, BRS 257, BRS 258, BRS 261 and BRS 262, grown in the 2005/2006 crop season, were assayed. The seeds were packed in Kraft paper bags and stored at room temperature under laboratory conditions. Seeds were evaluated with respect to their germination and vigor (first germination count, accelerated aging and tetrazolium test) and their total isoflavone contents and respective aglycon forms (daidzein, genistein and glycitein),glycosides (daidzine, genistine and glycitine) and malonyl conjugates. A completely randomized block design with six replications with the treatments set out within a subplot scheme (21 cultivars x 2 storage periods) was used. The F-test was used to compare means between storage periods and the Scott-Knott test to compare cultivars for each storage period, both with a 95% probability. It was concluded that isoflavone contents differ between cultivars and show a distinct behavior throughout storage.

scholarly journals Physiological quality of soybean seeds stored after industrial treatments with different chemicals

2021 ◽  
Vol 10 (2) ◽  
pp. e6310212279
Author(s):  
Renata Cristiane Pereira ◽  
Lucas Caiubi Pereira ◽  
Alessandro Lucca Braccini ◽  
Larissa Vinis Correia ◽  
Murilo Fuentes Pelloso ◽  
...  
Keyword(s):  
Block Design ◽  
Accelerated Aging ◽  
Storage Period ◽  
Original Data ◽  
Soybean Seeds ◽  
Randomized Block Design ◽  
Seedling Length ◽  
Physiological Quality ◽  
Main Components

This study aimed to relate the smallest set of variables that compose the quality of soybean seeds lot under study, as well as to evaluate the influence of four industrial seed treatments and their respective slurry volumes on the physiological potential. The experiment was carried out in a completely randomized block design with 4 replicates and 24 treatments. The chemical treatments were: control (T1), micronutrient + polymer + drying powder (T2), bioregulator + polymer + drying powder (T3) and micronutrient + bioregulator + polymer + drying powder (T4). The seeds were stored for periods of 0, 15, 30, 45, 60 and 90 days and were subsequently evaluated for their physiological potential. In each storage period, the variable germination, first count, accelerated aging, emergence speed index, final emergence in the sand substrate, aerial part length, root length and total seedling length were evaluated. The main components of the standard germination test and first count were the ones that most contributed to explaining the variability of the original data. Increasing the volume of the slurry in the industrial seed treatment reduces the physiological quality of soybean seeds during storage.

scholarly journals Physiologic Quality and Biochemical Characters of Barley Seeds Produced Under Nitrogen Doses and Growing Environments

2019 ◽  
Vol 11 (12) ◽  
pp. 65
Author(s):  
Lanes B. A. Jaques ◽  
Ivan R. Carvalho ◽  
Vinícius J. Szareski ◽  
Henrique E. Rodrigues ◽  
Ítala T. P. Dubal ◽  
...  
Keyword(s):  
Block Design ◽  
Accelerated Aging ◽  
Dry Mass ◽  
Human Consumption ◽  
Limiting Factor ◽  
Hordeum Vulgare L ◽  
Barley Cultivars ◽  
Randomized Block Design ◽  
Physiological Quality

Barley (Hordeum vulgare L.) is considered one of the most important cereals, such as maize, rice and wheat, due to its multiplicity of usage, as much for human consumption as for feed. The Nitrogen is one of the main nutrients that influences the quality and productivity of barley seeds because it participates in numerous metabolic routes. It is a limiting factor of the production, the lack or the excess can bring consequence to the culture. In this manner, the present study aims to evaluate the influence of different nitrogen doses on the physiologic quality and biochemical characters of brewing barley seeds produced in two growing environments. The experiment was conducted in the 2017 crop season, in a randomized block design, organized in a factorial scheme, being 2 cultivation environment × 2 brewing barley cultivars × 4 nitrogen doses, disposed in four replicates. The physiological quality of the seeds was evaluated by germination, first counting of germination, accelerated aging, field emergence, shoot and root length, dry mass of shoot and root of seedlings, electrical conductivity (3, 6 and 24 hours) and isoenzymes. The growing environment promotes differences in the barley seeds physiologic quality. The nitrogen fertilizing, at dose of 120 kg ha-1, results in superiority in the physiologic quality of seeds. The cultivar BRS Cauê in both environments presented higher vigor. The nitrogen fertilizing alters the isoenzymatic expression of barley seedlings, creating variation in the bands intensity, at different nitrogen doses.

scholarly journals Foliar fungicide and environments on the physiological quality of oat seeds

2014 ◽  
Vol 36 (1) ◽  
pp. 15-24 ◽  
Author(s):  
Eliege Aparecida de Paiva Oliveira ◽  
Claudemir Zucareli ◽  
Inês Cristina de Batista Fonseca ◽  
José Carlos de Oliveira ◽  
Alberto Sérgio do Rego Barros
Keyword(s):  
Grain Yield ◽  
Seed Quality ◽  
Block Design ◽  
Seedling Emergence ◽  
Accelerated Aging ◽  
Dry Weight ◽  
Oat Seeds ◽  
Physiological Quality ◽  
Foliar Fungicide

The oat crop is of great economic importance and seed production depends on several factors (biotic and abiotic) that can alter its quality. Thus, the study aimed to evaluate the physiological quality of oat seeds produced with and without application of foliar fungicide in contrasting environments. The experimental design was a randomized block design in a factorial 6x2 (cultivar x fungicide) for each site, with four replications. The physiological quality of seeds was evaluated by grain yield, germination, first count, accelerated aging, moisture content after accelerated aging, seedling length, seedling dry weight, electrical conductivity and seedling emergence in field. Data were subjected to joint and individual analysis of variance, and means were compared by Tukey’s test at 5%. Grain yield in Mauá da Serra is superior to Londrina, Parana State - Brazil, but the seed quality is lower, although all cultivars have shown germination above 90% in the two cultivation sites. Cultivars FAEM 6 DILMASUL and UPFA OURO showed no disease, indicating possible resistance. The application of the product has a beneficial effect on seed germination and vigor, even in the absence of disease.

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

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.  

scholarly journals Productivity and physiological quality of seeds with burn down herbicides at the pre harvest of bean crops

2014 ◽  
Vol 36 (4) ◽  
pp. 384-391 ◽  
Author(s):  
Marlo Adriano Bison Pinto ◽  
Claudir José Basso ◽  
Stela Maris Kulczynski ◽  
Cristiano Bellé
Keyword(s):  
Management Practices ◽  
Seed Quality ◽  
Block Design ◽  
Seedling Emergence ◽  
Accelerated Aging ◽  
Production Environment ◽  
Glufosinate Ammonium ◽  
Time Of Application ◽  
Physiological Quality

The physiological quality of bean seeds is influenced by the production environment and management practices employed during cultivation. The objective of this study was to evaluate the productivity and physiological quality of bean seeds after desiccant applications at different times at pre-harvest. A randomized block design was used, with a factorial (3x3) + 1 arrangement, where the application of three desiccants was tested: glyphosate (960 g a.i. ha-1), paraquat dichloride (240 g a.i. ha-1) and glufosinate ammonium (400 g a.i. ha-1) + mineral oil, applied three times (days after flowering - DAF), and a control without herbicide in four replications. Seed quality was determined by the following tests: germination, first count, seedling emergence speed rate, accelerated aging, electrical conductivity and seedling dry biomass. Seed yield was not influenced by either herbicides or time of application. Regardless of time of application, the lowest percentage of normal seedlings after the germination, first count and accelerated aging tests was observed in seeds desiccated with the herbicide glufosinate ammonium. The herbicide glyphosate reduces seedling vigor. The times of application of the product paraquat dichloride did not affect the germination and vigor of bean seeds.

scholarly journals Is the physiological potential of oilseed rape influenced by fertilization with nitrogen and sulfur?

2020 ◽  
Vol 42 ◽  
Author(s):  
Thayná Cristina Stofel Andrade ◽  
Tathiana Elisa Masetto ◽  
Luiz Carlos Ferreira de Souza ◽  
Graciela Beatris Lopes
Keyword(s):  
Oilseed Rape ◽  
Block Design ◽  
Accelerated Aging ◽  
Seed Storage ◽  
Seed Vigor ◽  
Randomized Block Design ◽  
Physiological Quality ◽  
Red Latosol ◽  
Positive Effect

Abstract: The productivity of the oilseed rape crop is responsive to the application of nitrogen (N) and the effect of N is sulfur (S)-dependent. In addition, storage may influence seed vigor. The aim of the present study was to assess the effect of fertilization with nitrogen and sulfur on the physiological quality of rapeseeds. All combinations of four doses of N (0, 40, 80, and 120 kg.ha-1) and five of S (0, 30, 60, 90, and 120 kg.ha-1) were evaluated with four replications each distributed in a randomized block design in a distroferric Red Latosol soil. The effects of the nutrients and their combinations on the physiological potential of rapeseeds were evaluated even immediately after harvest and 180 days of storage through the germination test, accelerated aging, field emergence and seedling performance. The application of N associated with S had a positive effect on the physiological quality of the seeds. The application of the 120 kg.ha-1 dose of N and the 80 kg.ha-1 dose of S promoted the highest germination and vigor of the seeds. Seed storage for a period of 180 days led to a drastic reduction in the physiological potential of the rapeseeds.

scholarly journals Effect of seed vigor and sowing densities on the yield and physiological potential of wheat seeds

2021 ◽  
Vol 43 ◽  
Author(s):  
Carolina Pereira Cardoso ◽  
José Henrique Bizzarri Bazzo ◽  
Jéssica de Lucena Marinho ◽  
Claudemir Zucareli
Keyword(s):  
Seed Yield ◽  
Seedling Emergence ◽  
Accelerated Aging ◽  
Seed Vigor ◽  
Wheat Crop ◽  
Seedling Length ◽  
Physiological Quality ◽  
Initial Seed ◽  
Wheat Seeds

Abstract: Initial seed vigor and sowing density interact in establishment of plants in the field, and can thus affect expression of the plasticity of the wheat crop and the yield and physiological quality of the seeds produced. The aim of this study was to evaluate the effect of seed vigor levels in combination with sowing densities on the yield and physiological potential of wheat seeds. The cultivars BRS Gralha-Azul and BRS Sabiá were used in a randomized block experimental design in a 2 × 4 factorial arrangement, with four replications. The treatments consisted of seeds of high and low vigor and four sowing densities (150, 250, 350, and 450 seeds.m-2). The following evaluations were made: seed yield, germination, first germination count, seedling length, seedling dry matter, accelerated aging, emergence speed index, and seedling emergence in sand. An increase in sowing density favors the seed yield of both cultivars; however, it reduces the vigor of the seeds produced by the cultivar BRS Gralha-Azul, especially of the seeds produced by plants originating from high vigor seeds. For the cultivar BRS Sabiá, an increase in sowing density decreases the germination performance of seeds produced by plants originating from low vigor seeds.

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.

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