SABIIA - Sistema Aberto e Integrado de Informação em Agricultura (Sabiia)

Meira,Messulan Rodrigues; Martins,Ernane Ronie; Resende,Luciane Vilela.

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...

Accelerated aging as vigor test for sunn hemp seeds

Palavras-chave: Tea-of-pedestrian; Germination; Vigor test; Electrical conductivity.

Ano: 2016

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016001202096

Silva,Clíssia Barboza da; Barbosa,Rafael Marani; Vieira,Roberval Daiton.

ABSTRACT: This study aimed to determine the most appropriate method to assess the sunn hemp ( Crotalaria juncea L.) seed vigor in the accelerated aging test. Five seed lots from harvest 2007/2008 were evaluated for germination, vigor and seedling emergence in the field. Accelerated aging test was performed at 41°C during 48, 72 and 96 hours, with and without sodium chloride saturated solution. Then, the promising procedure was also performed for 2008/2009 and 2009/2010 harvests. In the traditional accelerated aging test, the no-uniform water acquisition by the seeds adversely affected results. Accelerated aging test with sodium chloride saturated solution is the most appropriate method to evaluate the physiological potential of sunn hemp seeds, and the...

Fluid-dynamic behavior of flaxseed fluidized and spouted bed

Palavras-chave: Crotalaria juncea L.; Forage crop; Physiological potential; Germination; Standization.

Ano: 2017

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000100402

Santana,Elza Brandão; Valente,Maria da Conceição da Costa; Corumbá,Lorena Gomes; Andrade,Elisangela Lima; Costa,Cristiane Maria Leal; Faria,Lênio José Guerreiro de.

ABSTRACT: Processing of particles in a moving bed, such as a fluidized bed or a spouting bed, is commonly used in the operations of drying, coating, and granulation of particulate systems. This process has applications in the chemical, pharmaceutical and, presently, agronomical industries, especially for seed treatment/coating. This research aimed to analyze the fluid-dynamic behavior of fluidized and spouting beds with different air temperatures and loads of flaxseeds (Linum usitatissimum L.), with estimates of the fluid-dynamic parameters correlated to each process. The parameters were compared with the values obtained from classical correlations in the literature, with indications of associated percentages of deviation. Influence of fluid dynamics on...

Lolium multiflorum seed quality analyzed by accredited laboratories in the Rio Grande do Sul State

Palavras-chave: Linum usitatissimum L.; Dynamic bed; Physiological quality; Germination; Fluid-dynamic parameters.

Ano: 2017

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001000207

Huth,Caroline; Lopes,Sidinei José; Müller,Caren Alessandra; Rosa,Cariane Pedroso da; Andrade,Fabrício Fuzzer de; Santos,Larissa Staggemeier dos; Mattioni,Nilson Matheus.

ABSTRACT: The objective of this research was to carry out a survey, through the levels of physical purity, percentage of pure seeds, number of other seeds, and the physiological quality through germination, in the samples of ryegrass seeds analyzed in laboratories accredited by the Ministry of Agriculture, Livestock and Supply in Rio Grande do Sul. Data from 3959 ryegrass samples analyzed from the period 2014 to 2017 were compiled. Quality of the seeds was presented through the percentage of samples within the standards recommended for commercialization, for the variables germination, pure seeds, seeds of cultivated species, wild, noxious, tolerated and noxiously forbidden, in all factors, cultivar, region of origin, category and crop of seed production....

Drift of 2,4-D and dicamba applied to soybean at vegetative and reproductive growth stage

Palavras-chave: Ryegrass; Seed production; Germination; Purity.

Ano: 2020

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782020000200203

Silva,Diecson Ruy Orsolin da; Silva,Edson Dalla Nora da; Aguiar,Adalin Cezar Moraes de; Novello,Bruna Dal’Pizol; Silva,Álvaro André Alba da; Basso,Claudir José.

ABSTRACT: The introduction of dicamba and 2,4-D-resistant soybean will increase the use of auxin herbicides for management of herbicide-resistant weeds, increasing risk of drift in non-target crops. The field experiment was conducted in 2016/17 to evaluate injury, growth, yield, germination and seeds vigor of soybean effects to simulated drift of 2,4-D and dicamba applied to soybean at the V3 and R2 growth stages. To simulate drift, 2,4-D was applied at 0; 5.16; 10.4; 20.8 e 41.5g ae ha-1 and dicamba at: 0; 3.7; 7.4; 14.9 e 29.8g ae ha-1. The injury of the dicamba is greater than 2,4-D, and the V5 stage is more susceptible to both herbicides. The greatest reductions in soybean yield follow the drift of dicamba in R2 and 2,4-D in V5. The physiological...

Physical and physiological quality of seeds of Campo Grande Stylosanthes coated with different binder materials

Palavras-chave: Dose response; Injury; Germination; Vigor; Synthetic auxin.

Ano: 2018

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018000800151

Baroni,Danilo Força; Vieira,Henrique Duarte; Silva,Flávio Wirlan Andrade da; Acha,Amanda Justino; Pires,José Inácio Coelho.

ABSTRACT: The binder materials used in seed coating provide adherence of the filler materials onto the seeds. Adequate concentrations of the binder promote good physical characteristics of coating while not impairing seed physiological characteristics. Thus, the objective of this study was to evaluate the type and the concentration of binder materials that allow the best physical and physiological characteristics in coated seeds of Campo Grande Stylosanthes. Seed coating was carried out in a coating pan, using sand as the filling material. The treatments consisted of 2 types of binders mixed in 3 ratios (PVA glue and gum arabic glue, diluted in water, 3:1, 2:1, and 1:1), and uncoated seeds as control. The coated seeds were evaluated for physical and...

Relationship between fruit maturation stage and physiological quality of physic nut (Jatropha curcas L.) seeds

Palavras-chave: Germination; Coating; Stylosanthes capitata/macrocephala.

Ano: 2020

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782020000400201

Silva,Laércio Junio da; Dias,Denise Cunha Fernandes dos Santos; Milagres,Carla do Carmo; Dias,Luiz Antônio dos Santos.

The physic nut (Jatropha curcas L.) has great potential for use in biodiesel production due to the high oil content of its seeds. Production of high quality seeds depends upon the appropriate time of harvest. A field experiment was carried out to monitor the maturation process of physic nut seeds and to establish the ideal harvest time of the seeds based on external fruit color. Fruits were collected at different maturation stages based on the external color: green, yellow-green, yellow, yellow-brown and brown. Seeds were extracted manually and, after natural drying, were submitted to the following tests and determinations: moisture content and dry matter, germination, first count seedling emergence, seedling growth, accelerated aging, electrical...

Physiological quality of osmoprimed eggplant seeds

Palavras-chave: Germination; Vigor; Harvest; Maturity.

Ano: 2012

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542012000100005

Reis,Rodrigo de Góes Esperon; Guimarães,Renato Mendes; Vieira,Antônio Rodrigues; Gonçalves,Nayara Roberto; Costa,Valéria Hanny.

Eggplant seeds germination can be slow and uneven, justifying the use of pre-germinative treatments to improve the performance of seed lots. One option of treatment is the controlled hydration of seeds by priming. In this way, this study aimed to evaluate the performance of eggplant seeds cv. Embu submitted to different methodologies of priming. The seeds used in the experiment were stored in cold chamber (15º C and 55% RH) in paper bags. The research was carried out at Central Laboratory of Seeds/UFLA. The seeds were submitted to the priming in aerated solutions varying the following factors: temperature (15º C and 25º C), time (24, 48 and 72 hours) and solution (water, PEG, KNO3 and PEG+KNO3). Seeds were washed in running water and dried at 30º C, until...

Physiological quality, anatomy and histochemistry during the development of carrot seeds ( Daucus carota L.)

Palavras-chave: Solanum melongena; Priming; Germination; Vigour.

Ano: 2012

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542012000500005

Miranda,Rafaela Marques de; Dias,Denise Cunha Fernandes dos Santos; Picoli,Edgard Augusto de Toledo; Silva,Patrícia Pereira da; Nascimento,Warley Marcos.

ABSTRACT The adequate time for carrot seed harvest influences its physiological quality. The objective of this study was to evaluate physiological, anatomical and histochemical changes in carrot seeds harvested at different stages of development and to establish the most appropriate harvest time. Secondary umbels were harvested at 14, 21, 28, 35, 42, 49, 56 and 63 days after anthesis (DAA). For seed anatomical and histochemical characterization, sections were stained with Toluidine blue stain, Xylidine Ponceau, Lugol’s iodine, Sudan Black B and submitted to polarized light. Seed moisture content, seed dry matter, germination, first count, emergence percentage and emergence speed index of seedlings were evaluated. Cultivar Brasília carrot seeds at 14 DAA...

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

Palavras-chave: Maturity; Harvest; Reserve substances; Germination; Vigor.

Ano: 2017

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000200169

Stefanello,Raquel; Muniz,Marlove Fátima Brião; Nunes,Ubirajara Russi; Dutra,Cláudia Braga; Somavilla,Iana.

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,...