scholarly journals Physiological quality of seeds and growth of seedlings of chickpea under salt stress

2021 ◽  
Vol 10 (11) ◽  
pp. e597101119940
Author(s):  
Amanda Maria Leal Pimenta ◽  
Nelson de Abreu Delvaux Júnior ◽  
Sérgio Manoel da Silva Fernandes ◽  
Josiane Cantuária Figueiredo ◽  
Samy Pimenta ◽  
...  
Keyword(s):  
Salt Stress ◽  
Seedling Growth ◽  
Primary Root ◽  
Dry Mass ◽  
Sodium Chloride Solutions ◽  
Physiological Quality ◽  
Mean Germination Time ◽  
Germination And Growth ◽  
Osmotic Potentials

Salt stress is a condition that causes physiological changes in several species, the identifying cultivars tolerant to such conditions is essential to high salinity environments. The objective was to evaluate the physiological quality of seeds of chickpea cultivars to salt stress during germination and seedling growth. Two cultivars (‘BRS Cícero’ and ‘BRS Aleppo’) and five osmotic potentials simulated with sodium chloride solutions (0.0; -0.2; -0.4; -0.6 and -0.8 MPa), were evaluated by the test of germination speed index, mean germination time, epicotyl and primary root length, epicotyl and primary root fresh mass, epicotyl and the primary root dry mass of the seeds were evaluated. Significant interactions were found for all variables, indicating that there are cultivars with specific performance for a particular salt condition, and the simulated salt stress conditions negatively affected germination and seedling growth. Osmotic potentials of less than -0.4 MPa are harmful to the germination and growth of chickpea seedlings. The ‘BRS Cícero’ seeds showed a higher salt tolerance than ‘BRS Aleppo’. The cultivar BRS Aleppo has a longer epicotyl length compared to 'BRS Cícero' when subjected to the same conditions of salt stress.

scholarly journals Priming and drying on the physiological quality of eggplant seeds

2012 ◽  
Vol 30 (3) ◽  
pp. 484-488 ◽  
Author(s):  
Delineide P Gomes ◽  
Alexandre F da Silva ◽  
Denise Cunha FS Dias ◽  
Eveline M Alvarenga ◽  
Laércio J da Silva ◽  
...  
Keyword(s):  
Root Length ◽  
Primary Root ◽  
Dry Weight ◽  
Control Group ◽  
Peg 6000 ◽  
Physiological Quality ◽  
Three Sheets ◽  
Osmotic Potentials ◽  
Primary Root Length

We evaluated the effect of the priming with polyethyleneglicol (PEG) 6000 followed or not of drying on two lots of eggplant seeds with medium and low vigor respectively. The seeds were submitted to the treatments of priming with PEG 6000 in the osmotic potentials of -0.6, -0.9 and -1.2 MPa during 48 or 96 hours of priming with and without subsequent drying. For the soaking of seeds in osmotic solutions, these were placed over three sheets of paper boxes such germitest gerbox conditioning moistened with each solution in a 3:1 ratio. The control group was represented by unprimed seeds. The priming for both lots provided higher values in relation to the vigor through the first counting of germination, seedlings and primary root length, germination and emergence rates, emergence and dry weight of seedlings when compared to the non-primed seeds. These results were not verified for germination; significant differences practically were not observed in relation to the controls. Improvements in relation to the vigour were not higher on lot 2 than those obtained on lot 1. The priming with PEG 6000 with subsequent drying increased the vigor of eggplant seeds of the cultivar Morro Grande in relation to those non-primed, however, without differences in the germination.

scholarly journals Antioxidant activity and physiological performance of popcorn seed after saline stress and analysis of seedling images

2020 ◽  
Vol 44 ◽  
Author(s):  
Hugo Cesar Rodrigues Moreira Catão ◽  
Franciele Caixeta ◽  
Amanda Moreira Lopes ◽  
Flavia Andrea Nery-Silva ◽  
Adílio de Sá Júnior
Keyword(s):  
Antioxidant Activity ◽  
Salt Stress ◽  
Dry Mass ◽  
Saline Stress ◽  
Physiological Performance ◽  
Randomized Design ◽  
Physiological Quality ◽  
Completely Randomized Design ◽  
The Relationship

ABSTRACT Salinity influences all germination stages and may adversely affect seedling establishment in the field. The objective of this research was to determine the relationship between the antioxidant activity and the physiological performance of seeds and to verify the efficacy of the imaging analysis of popcorn seedlings after seed exposure to saline stress. A completely randomized design was used that consisted of four replicates in a factorial scheme. This scheme comprised three popcorn hybrids (P618, AP6002, and AP8203) and five saline potential levels (0.0; -0.1; -0.3; -0.6, and -0.9 MPa) that were obtained from KCl solutions of different concentrations. First count germination, germination and seedling vigor classification (strong normal seedlings), and dry mass of seedlings were evaluated to determine the physiological quality of the seed. The images of seedlings were used to evaluate the coleoptile and root lengths, indices of vigor, uniformity, and growth using the Groundeye® software. The activities of the antioxidant enzymes superoxide dismutase (SOD), ascorbate peroxidase (APX), and catalase (CAT) were also determined. Saline stress compromises the physiological quality and antioxidant activity of seeds and the performance of popcorn seedlings. Computerized image analysis using Groundeye® was efficient in evaluating the popcorn seedlings after being subjected to salt stress. Hybrids AP6002 and AP8203 were more tolerant to salt stress than hybrid P618.

scholarly journals Residual effect of bur gherkin seed treatment with biostimulant under salt stress

2016 ◽  
Vol 38 (3) ◽  
pp. 219-226 ◽  
Author(s):  
Maria Lilia de Souza Neta ◽  
Francisco de Assis de Oliveira ◽  
Salvador Barros Torres ◽  
Antonia Adailha Torres Souza ◽  
Sara Monaliza Costa Carvalho ◽  
...  
Keyword(s):  
Salt Stress ◽  
Agricultural Production ◽  
Seed Treatment ◽  
Accelerated Aging ◽  
Residual Effect ◽  
Dry Mass ◽  
Beneficial Effects ◽  
Physiological Quality ◽  
Previously Treated

Abstract: The physiological quality of seeds used in agricultural production is one of the main factors that should be considered when implanting the culture. This study aimed at evaluating the quality of bur gherkin seeds, cv. Liso de Calcutá, coming from plants grown from seeds that were previously treated with biostimulant (0, 5, 10, 15 and 20 mL. kg-1 seeds) and cultivated in two irrigation water salinities (0.5 and 3.5 dS. m-1). Initially, the water content of seeds was determined and the following tests were performed: germination, accelerated aging, greenhouse emergence, emergence speed index, height and dry mass of seedling aerial part. It was found that the physiological quality of bur gherkin seeds coming from plants that were subjected to salt stress is negatively affected, and that the use of biostimulant, applied via seeds, provides beneficial effects on the physiological quality of seeds produced in the next generation.

scholarly journals PRODUCTION AND PHYSIOLOGICAL QUALITY OF SOYBEAN SEEDS IN ORTHIC QUARTZARENIC NEOSOIL OF THE CERRADO REGION

2015 ◽  
Vol 28 (4) ◽  
pp. 127-134
Author(s):  
CHARLINE ZARATIN ALVES ◽  
GUSTAVO MARTINS ZAQUEU ◽  
ERIC FABIANO SERAGUZI ◽  
AGUINALDO JOSÉ FREITAS LEAL ◽  
JOSUÉ BISPO DA SILVA
Keyword(s):  
Electrical Conductivity ◽  
Aerial Part ◽  
Water Distribution ◽  
Accelerated Aging ◽  
Dry Mass ◽  
Soybean Seeds ◽  
Scheme Design ◽  
Physiological Quality ◽  
Tetrazolium Test

ABSTRACT: The aim of this study was to evaluate the effect of the sowing periods in production, productivity component and physiological quality of seeds of three soybean cultivars (TMG133RR, P98Y70RR and NS7670RR) in Orthic Quartzarenic Neosoil in the cerrado region. The design used was a randomized block a factorial scheme design with four repetitions, and each plot with useful space consisted of three rows of four meters length, spaced at 0.45 meters. Field evaluations were the final stand, the height of the plants, height of the first pod insertion, the mass of 100 seeds and productivity. Already in the lab seeds were evaluated for germination and vigor (first germination count, emergency, emergence speed index, length and dry mass of the aerial part of the plant and roots, electrical conductivity, accelerated aging and tetrazolium test). It concludes that it is possible to use Orthic Quartzarenic Neosoils, located in the Cerrado region at altitudes higher than 600 m, in years and places with good water distribution in the spring-summer seasons, for grain and soybeans production, but as a first goal, the crop should be sown in the first 20 days of November otherwise it should take place in early December.

scholarly journals Calidad fisiológica de semillas y variabilidad entre plantas en una población de arroz

2016 ◽  
Vol 11 (3) ◽  
pp. 28
Author(s):  
Luis Osmar Braga Schuch ◽  
Igor Kohls ◽  
Andreia da Silva Almeida ◽  
Cristiane Deuner ◽  
Jerffeson Araujo Cavalcante
Keyword(s):  
Spatial Distribution ◽  
Grain Yield ◽  
Plant Height ◽  
Seedling Growth ◽  
Coefficient Of Variation ◽  
Dry Matter ◽  
Early Seedling Growth ◽  
Physiological Quality ◽  
Early Seedling

<p>La calidad fisiológica de la semilla podría afectar el rendimiento de granos de arroz. Las diferencias en la calidad fisiológica de las semillas pueden causar la reducción y desuniformidad de la emergencia en el campo, acarreando una diferencia en el crecimiento inicial de las plantas, y consecuentemente afectando el cultivo y su rendimiento. Se realizo un experimento con el objetivo de evaluar la distribución espacial y la variabilidad en la población entre las plantas de arroz, en función de la calidad fisiológica de las semillas. Fueron utilizados nueve lotes de semillas de la cultivar BR-IRGA 410, siendo tres de alta, tres de media y tres de baja calidad fisiológica. Cada bloque consistió de nueve líneas de 5,5 metros de longitud, separadas por 0,12 metros. Se evaluó el número de fallas consecutivas y la variabilidad entre las plantas a través del coeficiente de variación de la altura de plantas y de la materia seca. El uso de las semillas con baja calidad fisiológica proporcionó mayor desuniformidad en la distribución espacial de la planta en el campo, y una mayor variabilidad entre las plantas que componen la población, lo que puede proporcionar un aumento en la competencia intra-especifica.</p><p align="center"><strong><em>Seeds physiological quality and variability among plants in populations of rice</em></strong><strong><em> </em></strong></p><p><strong>Abstract: </strong>Several authors try to relate the physiological quality of seeds with grain yield of rice. Differences in the physiological quality of seeds can cause reduction and uniformity of emergence in the field, leading to differential on early seedling growth, and consequently affecting the culture and your yield. An experiment was conducted to evaluate the spatial distribution and variability in populations of rice plants, depending on the physiological quality of seeds. Were used nine seed lots of cultivar BR-IRGA 410, three lots of high, three lots of medium and three lots of low physiological quality. Each block was composed of nine lines of 5.5 meters in length, spaced 0.12 meters. We evaluated the number of consecutive failures in emergence, and plant variability through the coefficient of variation of plant height and dry matter. The use of seed with low physiological quality provides increased uniformity in the spatial distribution of plants in the field, and greater variability from plants comprising the population, which can provide an increase in intra-specific competition.</p><p> </p>

scholarly journals SPATIAL DISTRIBUTION OF PHYSIOLOGICAL QUALITY OF Joannesia princeps Vell. SEEDS1

2018 ◽  
Vol 41 (4) ◽  
Author(s):  
Rômulo André Beltrame ◽  
José Carlos Lopes ◽  
Julião Soares de Souza Lima ◽  
Vagner Mauri Quinto
Keyword(s):  
Spatial Distribution ◽  
Root System ◽  
Spatial Dependence ◽  
Aerial Part ◽  
Dry Mass ◽  
Fresh Mass ◽  
Plastic Bags ◽  
Mother Plants ◽  
Physiological Quality

ABSTRACT The objective of this study was to analyze the spatial distribution of the attributes that determine the physiological quality of Joannesia princeps seeds. Seeds were collected, individually from, 40 mother plants in the Horto Florestal Municipal Laerth Paiva Gama, in Alegre-ES, which constituted the georeferenced sampling mesh. For germination, the seeds tegument was cracked and was held the imbibition in gibberellic acid GA3 500 mg L-1 for 24 h in environmental chamber with temperature adjusted to 30 ºC. The seeds were sown in plastic bags of ± 600 cm3 containing soil+sand+manure in the proportion of 1:1:1. On the 65th day after sowing, the following variables were analised: emergence (E), emergence speed index (IVE), root length (CR), diameter of base (DC), shoot length of the aerial part (CPA), fresh mass of the root system (MFSR), fresh mass of the aerial part (MFPA), dry mass of the root system (MSSR) and dry mass of the aerial part (MSPA). Data were subjected to descriptive statistics, geostatistics and kriging. With the exception of CPA and MFSR, it was found spatial dependence for the other studied variables: E, IVE, CR, DC, MFPA, MSSR e MSPA; varying of 14,0 a 47,5 m, so that the lowest range for the CR and longer range and degree of spatial dependence for the IVE. The analysis of the spatial distribution of the physiological quality of seeds of J. princeps can be used as a tool to define the sampling region of seeds with high and low vigor.

scholarly journals Yield and physiological quality of wheat seeds after desiccation with different herbicides

2017 ◽  
Vol 39 (3) ◽  
pp. 254-261 ◽  
Author(s):  
Fábio Henrique Krenchinski ◽  
Victor José Salomão Cesco ◽  
Danilo Morilha Rodrigues ◽  
Vinicius Gabriel Caneppele Pereira ◽  
Alfredo Junior Paiola Albrecht ◽  
...  
Keyword(s):  
Seed Quality ◽  
Block Design ◽  
Dry Mass ◽  
Wheat Crop ◽  
Glufosinate Ammonium ◽  
Randomized Block Design ◽  
Seedling Length ◽  
Physiological Quality ◽  
Wheat Seeds

Abstract: Some desiccation techniques for harvesting wheat may affect seed quality. The objective of this study was to evaluate the effect of different desiccant herbicides applied to the wheat crop and their effects on the production and seed quality. The experiment was conducted with cultivar COODETEC 150 (CD 150) in two sites in Palotina (Paraná state, Brazil) with a randomized block design consisting of 7 treatments (desiccation herbicides) and 4 replications. Desiccation was realized when 50% of the plants were in stage 80 with seeds in powdery or mass consistency. The variables analyzed were percentage of moisture content after harvest, Yield, hectoliter weight, mass of 100 seeds, vigor, germination, fresh mass of seedlings, dry mass of seedlings and root length. The herbicides carfentrazone-ethyl and clethodim were the ones that promoted greatest reduction in vigor. The herbicide paraquat caused reduction in seedling length. There was a reduction in the mass of 100 seeds for glufosinate-ammonium, clethodim, diquat and carfentrazone-ethyl. Glufosinate-ammonium, paraquat, glyphosate, clethodim and diquat caused reduction in yield. Desiccation of Cultivar CD 150 at stage 80 is not recommended, since plant Yield and physiological seed parameters were adversely affected by herbicides.

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 Temperatures and substrates for germination and vigor of Erythroxylum pauferrense Plowman seeds

2019 ◽  
Vol 41 ◽  
pp. e46030
Author(s):  
João Everthon da Silva Ribeiro ◽  
Arliston Pereira Leite ◽  
Jackson Silva Nóbrega ◽  
Edna Ursulino Alves ◽  
Riselane de Lucena Alcântara Bruno ◽  
...  
Keyword(s):  
Dry Mass ◽  
Germination Percentage ◽  
Seed Vigor ◽  
Randomized Design ◽  
Temperature Regimes ◽  
Seedling Length ◽  
Physiological Quality ◽  
Mean Germination Time ◽  
Completely Randomized Design ◽  
Understory Plant

Erythroxylum pauferrense is an endemic understory plant species of the Northeast Region of Brazil. The species is of great importance to the region and so ecophysiological studies are needed for its preservation. The objective of the present study was to determine the best substrates and temperatures for testing germination and seed vigor of E. pauferrense. An experiment was performed comprising a completely randomized design in a 5 x 4 factorial scheme, with five temperature regimes (20, 25, 30, 35°C constant and 20-30°C alternating) and four types of substrates (paper, vermiculite, sand and commercial substrate). The following characteristics were evaluated: germination percentage, first germination count, germination speed index, mean germination time, seedling length and dry mass (root and shoot). Paper and vermiculite substrates combined with constant temperatures of 20, 25, 30 and alternated between 20-30°C, provide greater seed germination and vigor while 35°C reduces seed physiological quality.

scholarly journals PHYSIOLOGICAL QUALITY OF Brachiaria brizantha SEEDS TREATED WITH FUNGICIDE AND INSECTICIDE

2018 ◽  
Vol 31 (3) ◽  
pp. 651-656
Author(s):  
ERIC FABIANO SERAGUZI ◽  
CARLOS HENRIQUE QUEIROZ REGO ◽  
FERNANDA BRITO CARDOSO ◽  
ANA CARINA DA SILVA CÂNDIDO ◽  
CHARLINE ZARATIN ALVES
Keyword(s):  
Root Development ◽  
Dry Mass ◽  
Brachiaria Brizantha ◽  
Thiophanate Methyl ◽  
Physiological Characterization ◽  
Randomized Design ◽  
Phytotoxic Effect ◽  
Physiological Quality ◽  
Completely Randomized Design

ABSTRACT This study aimed to evaluate the effects of chemical treatment of seeds with fungicide and insecticide on the seed physiological quality of Brachiaria brizantha cultivar MG5. Two experiments with four replicates were carried out in a completely randomized design. In the first experiment, the seeds were treated with the fungicide pyraclostrobin + fipronil + thiophanate-methyl and in the second, with the insecticide thiamethoxam, both at doses of 0, 150, 300, 450, and 600 mL of commercial product (CP)/100 kg of seeds. Physiological characterization was done on the basis of the first germination count, germination (%), emergence (%), emergence speed index, and length and dry mass of shoot and root. The treatment of B. brizantha seeds with the fungicide pyraclostrobin + fipronil + thiophanate-methyl benefits the physiological quality of seeds, improving germination and root development, with no phytotoxic effect up to the dose of 600 mL of CP/100 kg of seeds. The insecticide thiamethoxam has a biostimulating effect on B. brizantha cultivar MG5 up to the dose of 270 mL of CP/100 kg of seeds, but is phytotoxic in larger doses.

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