Electrical conductivity of the seed soaking solution and soybean seedling emergence

Vieira, Roberval Daiton; Neto, Angelo Scappa; Bittencourt, Sonia Regina Mudrovitsch de; Panobianco, Maristela

doi:10.1590/s0103-90162004000200007

Cited by 46 publications

(35 citation statements)

References 4 publications

(6 reference statements)

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“…It should be noticed that, in soybean seed lots of high vigor, the electric conductivity values must be under 70-80 μS cm -1 g -1 ), values registered under 10 days of harvest delay. However, seeds with electric conductivity values up to 90 μS cm -1 g -1 may express a satisfactory performance under adverse field conditions (Vieira et al 2004). This level was found in seeds with a harvest delay up to 15 days.…”

Section: Resultsmentioning

confidence: 99%

Physiological and enzymatic changes in soybean seeds submitted to harvest delay1

Zuffo

Júnior

Carvalho

et al. 2017

Pesqui. Agropecu. Trop.

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Harvest delay may affect the physiological quality of soybean seeds due to the occurrence of unfavorable environmental conditions in the field. This study was conducted to investigate the physiological and enzymatic changes in soybean seeds submitted to harvest delay. A randomized block design, with eight seed harvest periods (0; 5; 10; 15; 20; 25; 30; and 35 days after the R8 phenological stage - full maturity) of the BRS 820 RR® cultivar, with four replicates, was used. At each harvest period, the moisture content, 1,000-seed weight, germination, seedling emergence, emergence speed index, accelerated aging, vigor and viability (tetrazolium test), electrical conductivity, enzymatic expression and seed yield were measured. Harvest delay up to 35 days after the R8 phenological stage do not affect the 1,000-seed weight and seed yield. The delayed harvest from the R8 stage results in increased damage by stink bugs and moisture. The harvest delay of seeds from the 10th day after the R8 stage impairs the seed vigor and, from the 15th day, seed germination. Seeds harvested with a delay after the R8 stage have lower expressions of the following isoenzymatic systems: malate dehydrogenase, alcohol dehydrogenase, esterase, isocitrate lyase and superoxide dismutase, especially after 15 days of harvest delay.

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Section: Resultsmentioning

confidence: 99%

Physiological and enzymatic changes in soybean seeds submitted to harvest delay1

Zuffo

Júnior

Carvalho

et al. 2017

Pesqui. Agropecu. Trop.

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“…Hoffmaster et al (2003) and Marcos-Filho et al (2009) also demonstrated the potential of this software in evaluating the vigor of soybean seeds using 3-day old seedlings. The electrical conductivity test has been standardized for other leguminous seeds (Vieira et al, 2004;Artola and Carrillo-Castañeda, 2005;Muasya et al, 2006). Nakagawa et al (2003) proposed a 24 hour imbibition period at 20 ºC for sun hemp seeds to determine seed vigor.…”

Section: -----------------------------------------------------% -----mentioning

confidence: 99%

“…It is adapted to dry conditions and grown worldwide because of its very high nitrogen-fixing potential (Wang et al, 2009). It also protects soils against erosion, reduces soil compaction, promotes significant nutrient recycling, suppresses pathogens, weeds and nematodes and supplies high quality fiber for manufacturing specialized paper products.…”

Section: Introductionmentioning

confidence: 99%

Automated system of seedling image analysis (SVIS) and electrical conductivity to assess sun hemp seed vigor

Silva

Lopes

Marcos-Filho³

et al. 2012

Rev. bras. sementes

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-The development of new procedures for quickly obtaining accurate information on the physiological potential of seed lots is essential for developing quality control programs for the seed industry. In this study, the effectiveness of an automated system of seedling image analysis (Seed Vigor Imaging System -SVIS) in determining the physiological potential of sun hemp seeds and its relationship with electrical conductivity tests, were evaluated. SVIS evaluations were performed three and four days after sowing and data on the vigor index and the length and uniformity of seedling growth were collected. The electrical conductivity test was made on 50 seed replicates placed in containers with 75 mL of deionised water at 25 ºC and readings were taken after 1, 2, 4, 8 and 16 hours of imbibition. Electrical conductivity measurements at 4 or 8 hours and the use of the SVIS on 3-day old seedlings can effectively detect differences in vigor between different sun hemp seed lots.

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“…Several years of research were dedicated to develop vigor tests, which are successfully used either by seed companies on seed quality control programs or to research purposes, providing information about the planting value of a wide range of environmental conditions and evaluate storage potential of seed lots (HAMPTON;TEKRONY, 1995), as well as additional information to differentiate seed lots of acceptable standard germination (TEKRONY, 2003;VIEIRA et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

Vigor Tests Association as an Alternative for Precise and Efficient Assessment of Maize Seed Quality

et al. 2015

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-This study aimed to associate two concepts of seed vigor testing, the aging and seedling growth using image analysis, providing a feasible and time-saving way to evaluate maize seed vigor in large scale. For this purpose, five seed lots with different vigor levels from two single hybrids were used. The seeds were characterized by moisture content, germination, seedling emergence, seedling emergence speed index, accelerated aging and cold tests. The treatments were composed by varying the accelerated aging periods (0, 24, 48, 72 and 96h) and seedling growth periods (48 and 72h), before submitting the seedlings to image analysis for seedling root length measurement. Considering the results obtained, the adaptation of accelerated aging test by reducing the aging duration from 96h to 48h, and the replacement of the germination test by seedling root length measurement using image analysis could be considered a potential tool for maize seed vigor assessment. The treatments composed of 48h of seed aging followed by seedlings root length measurements using image analysis provided reliable data, compared to traditional vigor tests and it could be considered an efficient and timesaving approach, associating two different concepts of seed vigor analysis.Keywords: Zea mays L. Seed analysis. Physiological potential. Image analysis. ASSOCIAÇÃO DE TESTES DE VIGOR PARA AVALIAÇÃO PRECISA E EFICIENTE DA QUALIDADE DE SEMENTES DE MILHORESUMO -O experimento teve como objetivo associar conceitos para avaliação do vigor de sementes, o envelhecimento acelerado e crescimento de plântulas medido por meio da análise de imagens. Para tanto, cinco lotes de sementes com diferentes níveis de vigor de dois híbridos simples foram utilizados. As sementes foram caracterizadas pelo teor de água, germinação, porcentagem e índice de velocidade de emergência de plântulas, envelhecimento acelerado e teste de frio. Os tratamentos foram constituídos por diferentes períodos de envelhecimento acelerado (0, 24, 48, 72 e 96h) e de crescimento de plântulas (48 e 72h) e, em seguida, as plântulas, submetidas à análise de imagens para mensuração do comprimento de raízes. A adaptação do teste de envelhecimento acelerado, reduzindo a duração do envelhecimento de 96h para 48h e a substituição do teste de germinação pela mensuração do comprimento de raízes das plântulas por meio da análise de imagens, comprovou-se um método potencial para avaliação da qualidade de sementes de milho. Assim, os tratamentos compostos por 48h de envelhecimento, seguido pela mensuração do comprimento de raízes utilizando a análise de imagens, forneceram dados confiáveis em comparação aos testes de vigor tradicionais e podem ser considerados uma nova abordagem para a análise de vigor de sementes.

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Electrical conductivity of the seed soaking solution and soybean seedling emergence

Cited by 46 publications

References 4 publications

Physiological and enzymatic changes in soybean seeds submitted to harvest delay1

Physiological and enzymatic changes in soybean seeds submitted to harvest delay1

Automated system of seedling image analysis (SVIS) and electrical conductivity to assess sun hemp seed vigor

Vigor Tests Association as an Alternative for Precise and Efficient Assessment of Maize Seed Quality

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