Alterações fisiológicas e bioquímicas em sementes de Pterogyne nitens tull. Durante o envelhecimento artificial

Ataíde, Glauciana da Mata; Flores, Andressa Vasconcelos; Borges, Eduardo Euclydes de Lima e

doi:10.1590/s1983-40632012000100010

Cited by 16 publications

(9 citation statements)

References 17 publications

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“…West Indian cherry plants irrigated with 3.8 dS m -1 water also showed reduction in the %D, 13.33% for every 25% increase in K 2 O recommendation, which is equivalent to a reduction of about 48% in the %D of West Indian cherry plants fertilized with 125% K 2 O dose, compared with those under 50% of the recommendation of Musser (1995). Cell membrane damage is caused by the release of ions, leading to greater loss in integrity and destabilization of the cell membrane, and the quantity of leachates is determined considering that the higher the content leaked from the cell, the greater the damage caused to the cell membrane (ATAÍDE, 2012), which may indicate a mechanism that prevents tissue desiccation due to the reduction in the leaf osmotic component (FIOREZE et al, 2013).…”

Section: Results and Discussonmentioning

confidence: 99%

Saline water and potassium fertilization in cultivation of grafted west indian cherry BRS 366 Jaburu

Pinheiro¹,

Lima²,

Gheyi³

et al. 2019

Biosci. J.

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Agricultural exploitation in the semi-arid region of Northeast Brazil depends on the use of irrigation to guarantee safe production of crops. Nevertheless, the waters commonly used in this region have high levels of salts and require management strategies that make their use possible in agriculture. In this context, the present study aimed to evaluate water relations, photosynthetic pigments and growth of grafted West Indian cherry as a function of saline water irrigation and potassium (K) fertilization. The study was conducted under greenhouse conditions in lysimeters filled with eutrophic Regolithic Neosol with sandy loam texture, in the municipality of Campina Grande-PB, Brazil. Treatments were distributed in randomized blocks and consisted of two factors: two levels of irrigation water electrical conductivity -ECw (0.8 and 3.8 dS m -1 ) and four K doses (50, 75; 100 and 125% of the recommendation), with three replicates and one plant per plot. The 100% dose corresponded to 19.8 g of K 2 O per plant per year. The West Indian cherry crop was sensitive to water salinity of 3.8 dS m -1 in the post-grafting phase, resulting in a decline in photosynthetic pigment content and growth. Increasing K doses reduced the percentage of cell membrane damage and promoted increase in the synthesis of chlorophyll a and carotenoids in West Indian cherry plants. There was significant interaction between salinity levels and K doses for the leaf osmotic potential, water saturation deficit, percentage of cell membrane damage and chlorophyll b content in West Indian cherry plants.

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Section: Results and Discussonmentioning

confidence: 99%

Saline water and potassium fertilization in cultivation of grafted west indian cherry BRS 366 Jaburu

Pinheiro¹,

Lima²,

Gheyi³

et al. 2019

Biosci. J.

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“…As stated by Ataíde et al (2012), the artificial aging test was developed to predict the storage potential of lots of clover and fescue. So, this test has been used to investigate the physiological mechanisms involved in the aging process during storage (Sung and Jeng, 1994).…”

Section: Resultsmentioning

confidence: 99%

“…The artificial aging test was initially developed by Delouche (1965) in order to estimate the storage potential of clover and fescue seeds (Ataíde et al, 2012). However, it is widely used to evaluate seedling performance in field, and to make distinction on the physiological quality of seed lots with similar emergence behavior (Miloševic et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Association between the artificial aging test and the natural storage of coffee seeds

et al. 2018

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-The accelerated aging test is recognized as an efficient method for evaluating the vigor of seed lots and for estimating their storage potential. Thus, this work aimed to evaluate the association between artificial aging and natural storage of coffee seeds, through the correlation factor analysis. Seeds of four cultivars of Coffea arabica L. (Catuaí Amarelo, Arara, Catiguá, and Mundo Novo) and one of Coffea canephora Pierre (Apoatã) were used. Part of the newly-harvested seeds were aged in a growth chamber under controlled temperature and relative humidity conditions (42 ºC and 100% RH) for periods of 0, 4, 6, 8, and 10 days. The other part of the seeds was stored in tri-wall paper packaging for a period of 2, 4, and 6 months in a non-climate-controlled environment. Artificial aging allows predictions on the storage potential of coffee seeds, although the artificial aging periods depend on the cultivars.

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“…But when analyzing the activity by spectrophotometry, the enzymatic activity values obtained for lots 1 and 2 were superior and different from those obtained for lots 3 and 4, which were equal to each other ( Figure 6). For Ataíde et al (2012) and Berjak (2006), reducing the activity of enzymes such as catalase is related to loss of seeds viability and vigor.…”

Section: Resultsmentioning

confidence: 99%

Methods for the assessment of isoenzymes activity in sunflower seeds

Faria

Guimarães

Carvalho³

et al. 2015

J. Seed Sci.

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-Enzyme activity detection in seeds allows the assessment of the deterioration process in the early stages. In this context, the objective was to assess the effectiveness and the degree of similarity between the results of izoenzymes activity using different methods, as follows: spectrophotometry, visual analysis after electrophoresis, evaluation of the bands nodes gels with software GelAnalyzer. 250 hybrid seeds were submitted to artificial aging to form four lots with differences in physiological quality. In addition to the enzymatic determinations, physiological germination tests, emergence and emergence speed index were performed. It was concluded that there are differences in results according to the methods used; the results were consistent between test methods and correlated with physiological results when the catalase enzyme was evaluated; and in the isozyme analysis of superoxide dismutase and alcohol dehydrogenase there was a divergence among the results of the methodologies, and according to such, the relationship to seeds physiological quality.Index terms: seed quality, deterioration, enzymatic changes.Métodos para a avaliação da atividade de isoenzimas em sementes de girassol RESUMO -A detecção da atividade enzimática em sementes permite avaliar o processo de deterioração ainda nos primeiros estádios. Nesse contexto, objetivou-se avaliar a similaridade entre os resultados da atividade de isoenzimas, utilizando-se diferentes métodos: espectrofotometria, análise visual dos géis de poliacrilamida após eletroforese e avaliação das bandas nós géis com auxílio do software GelAnalyzer, e sua relação com a qualidade fisiológica das sementes. Foram utilizadas sementes do híbrido 250 da empresa Heliagro submetidas ao envelhecimento artificial para a constituição de quatro sublotes com diferenças na qualidade fisiológica. Além das determinações enzimáticas, foram realizados os testes fisiológicos de germinação, emergência e índice de velocidade de emergência. Concluiu-se que há diferenças de resultados conforme o método utilizado; os resultados foram consistentes entre métodos de análise e correlacionados com os resultados fisiológicos quando a enzima avaliada foi a catalase; para a análise isoenzimática da superóxido dismutase e da álcool desidrogenase houve divergência entre os resultados das metodologias, e em função dessas a relação com a qualidade fisiológica das sementes.Termos para indexação: qualidade de sementes, deterioração, alterações enzimáticas.

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Alterações fisiológicas e bioquímicas em sementes de Pterogyne nitens tull. Durante o envelhecimento artificial

Cited by 16 publications

References 17 publications

Saline water and potassium fertilization in cultivation of grafted west indian cherry BRS 366 Jaburu

Saline water and potassium fertilization in cultivation of grafted west indian cherry BRS 366 Jaburu

Association between the artificial aging test and the natural storage of coffee seeds

Methods for the assessment of isoenzymes activity in sunflower seeds

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