Teste de Condutividade Elétrica em Sementes de Bowdichia virgilioides Kunth

Dalanhol, Samanta Jaqueline; Rezende, Eduardo Henrique; Abreu, Daniela Cleide Azevedo de; Nogueira, Antônio Carlos

doi:10.4322/floram.2014.013

Cited by 18 publications

(20 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…These results corroborate with Dalanhol et al (2014), which evaluated physiological quality of three Bowdichia virgilioides Kunth seed lots of different colours, and observed that the yellow seeds lot presented greater percentage of germination (98%), while the lot with orange and red seeds presented 85.3% and 31.3% of germination, respectively. The germination test is performed in optimal conditions, that's why it is not sensitive to detect small variation of vigour in the seed lots (Marcos Filho, 1999); nevertheless, in this study, the test ranked the lots in different germination levels.…”

Section: Resultssupporting

confidence: 89%

“…White clover seeds have uneven ripeness, resulting in plants with tegument colour variation, ranging from yellow to brown-red (Costa et al, 2014). According to Dalanhol et al (2014), the same occurs with Bowdichia virgilioides Kunth seeds, and the tegument colour variation is closely related to physiological quality of seed lots. Atis et al (2011) observed that tegument colour of red clover (Trifolium pratense) seeds may indicate their quality, and greater germination and vigour values were found for yellow seeds.…”

Section: Resultsmentioning

confidence: 95%

See 1 more Smart Citation

Electrical Conductivity Test for Measurement of White Clover Seeds Vigor

Santos¹,

Carvalho²,

Pinto³

et al. 2019

JAS

View full text Add to dashboard Cite

This study aimed to evaluate the physiological performance of white clover seed lots of different tegument colours, besides to analyses the electrical conductivity test methodology with different seeds number, water volume and soaking periods. The experiment was developed at the Seed Didactic Laboratory in the Agronomy College “Eliseu Maciel” at the Federal University of Pelotas, in Pelotas-RS, Brazil. White clover seeds were manually separate, composing four lots of different coloured seeds: yellow, orange, brown and mixed. White clover seeds of yellow colour tend to present greater physiological potential through its germination and vigour. The electrical conductivity test was not efficient on identifying different vigour levels in white clover seed lots.

show abstract

Section: Resultssupporting

confidence: 89%

Section: Resultsmentioning

confidence: 95%

Electrical Conductivity Test for Measurement of White Clover Seeds Vigor

Santos¹,

Carvalho²,

Pinto³

et al. 2019

JAS

View full text Add to dashboard Cite

show abstract

“…The beginning of seed deterioration process is characterized by the de-structuring of the cell membrane system. The electrical conductivity test provides information together with other vigor analysis during the storage period (Milani et al 2012, Dalanhol et al 2014. The values for electrical conductivity of L. albescens seeds, after 24 and 48 hours, showed no significant differences between storage locations (laboratory and cold room temperature).…”

Section: Seed Conservation Testmentioning

confidence: 99%

Análise de sementes de Lupinus albescens Hook. & Arn

et al. 2019

View full text Add to dashboard Cite

The objective of this study was to describe the dispersion, color, size and morphological characteristics of fruits and seeds of Lupinus albescens, as well as pre-germinative treatments, aspects of luminosity and seed conservation. Above twenty populations were collected in São Francisco de Assis/RS and Alegrete/RS, pre-germinative treatments (seven pre-germinative methods, scarification times and temperatures) were analyzed; photoblastic test (seeds scarified between sandpapers, submitted to 25ºC); imbibition curve (control and scarification treatments between sandpapers); seeds conservation (cold room in plastic bag and natural environment in paper bag). Evaluations: description of fruits, seeds and viability analysis, using a completely randomized design. The results showed dispersion by autocoria, brown coloration of fruits and seeds and some striped seeds. Superior pre-germinative treatment was between sandpapers, for 40 seconds and under 25ºC. Seeds are classified as neutral photoblasts and without dormancy. Natural environment and paper bag were suitable for storage.

show abstract

“…The electric conductivity test was directly related to the cell membranes integrity, since the levels reorganization of the membrane and the reparation of damages are higher on seeds with greater vigor (DALANHOL et al, 2014), as those kept at 34% of relative humidity. This test has been efficient to evaluate the membrane permeability during seed deterioration on arborous species (ORTIZ et al, 2015).…”

Section: Discussionmentioning

confidence: 99%

PHYSIOLOGICAL AND BIOCHEMICAL ALTERATIONS ON THE STORAGE OF Cedrela fissilis VELLOZO SEEDS

Flores

Ataíde

Borges³

et al. 2018

View full text Add to dashboard Cite

In order to ensure the ex-situ conservation of a species, knowing the behavior of the seed during storage is necessary, as it is influenced by several factors inherent to the seed and by characteristics of the environment, such as temperature and relative humidity. This study aimed to evaluate the physiological and biochemical alterations on Cedrela fissilis (pink cedar) seeds during storage under different environmental conditions. Seeds were stored at 20ºC in desiccators containing salts that established the relative humidity of 34 %, 55 %, 75 %, and 93 %. Analysis were performed on fresh seeds (without storage -time zero), which were used as control, and every two months through a period of eight months of storage. At each assessment, the following aspects were quantified: water content; lipid peroxidation; and the activities of catalase and glucose-6-phosphate dehydrogenase. Germination and electrical conductivity tests were analysed. Seed vigor decreased on humidity at 20 °C. It correlated mainly with decrease of glucose-6-phosphate dehydrogenase activity and increase of lipid peroxidation. Keywords: Pink cedar, germination, vigor, enzymes, lipids. ResumoAlterações fisiológicas e bioquímicas durante o armazenamento de sementes de Cedrela fissilis Vellozo. Para garantir a conservação ex-situ de uma espécie, é necessário conhecer o comportamento das sementes durante o armazenamento, visto que este é influenciado por vários fatores inerentes à semente e às características do ambiente, tais como temperatura e umidade relativa. Este estudo teve como objetivo avaliar as alterações fisiológicas e bioquímicas em sementes de Cedrela fissilis (cedro rosa) durante o armazenamento sob diferentes condições ambientais. As sementes foram armazenadas a 20ºC em dessecadores contendo sais que estabeleceram as umidades relativas do ar de 34 %, 55 %, 75 % e 93 %. As análises foram realizadas em sementes frescas (sem armazenamento -tempo zero), usadas como controle, e a cada dois meses durante um período de oito meses de armazenamento. Em cada avaliação, foram quantificados: teor de água; peroxidação de lípidos; e as atividades das enzimas catalase e glicose-6-fosfato desidrogenase. Também, foi analisada a germinação e condutividade elétrica das sementes. O vigor das sementes diminuiu em todas as umidades a 20 °C, correlacionando-se, principalmente, com a diminuição na atividade de glicose-6-fosfato desidrogenase e com o aumento na peroxidação lipídica. Palavras-chave: Cedro rosa, germinação, vigor, enzimas, lipídios.

show abstract

Teste de Condutividade Elétrica em Sementes de Bowdichia virgilioides Kunth

Cited by 18 publications

References 13 publications

Electrical Conductivity Test for Measurement of White Clover Seeds Vigor

Electrical Conductivity Test for Measurement of White Clover Seeds Vigor

Análise de sementes de Lupinus albescens Hook. & Arn

PHYSIOLOGICAL AND BIOCHEMICAL ALTERATIONS ON THE STORAGE OF Cedrela fissilis VELLOZO SEEDS

Contact Info

Product

Resources

About