Condicionamento fisiológico de sementes de pepino e relação com desempenho das plantas em campo

Lima, Liana Baptista de; Filho, Júlio Marcos

doi:10.1590/s0101-31222009000300003

Cited by 13 publications

(9 citation statements)

References 20 publications

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“…Nevertheless it was not possible identifying the most vigorous 'Supremo' seed lot, even under expected variation on sensitivity of each test. the efficiency of the vigor tests performed here confirms the observations of Lima and Marcos-Filho (2009) regarding the ability to rank seed lots of cucumber seeds.…”

Section: Resultssupporting

confidence: 87%

“…Among tests used to assess cucumber seed vigor, literature includes the germination first count (torres et al, 1999), traditional accelerated aging and saturated salt accelerated aging (Bhering et al, 2000;Abdo et al, 2005;Lima and Marcos-Filho, 2009), electrical conductivity (Abdo et al, 2005), controlled deterioration (Pandey et al, 1990;Alsadon et al, 1995), percentage or speed of seedling emergence (Barbedo et al, 1997;Lima and Marcos-Filho, 2009), and seedling length ).…”

Section: Introductionmentioning

confidence: 99%

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Assessment of physiological potential of cucumber seeds using the software Seedling Vigor Imaging System® (SVIS®)

Chiquito¹,

Gomes²,

Marcos-Filho³

2012

Rev. bras. sementes

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-The software Seed Vigor Imaging System (SVIS ® ), has been successfully used to evaluate seed physiological potential by automated analyses of scanned seedlings. In this research, the efficiency of this system was compared to other tests accepted for assessing cucumber (Cucumis sativus L.) seed vigor of distinct seed lots of Supremo and Safira cultivars. Seeds were subjected to germination, traditional and saturated salt accelerated aging, seedling emergence, seedling length and SVIS analyses (determination of vigor indices and seedling growth uniformity, lengths of primary root, hypocotyl and whole seedlings). It was also determined whether the definition of seedling growth/uniformity ratios affects the sensitivity of the SVIS ® . Results showed that analyses SVIS have provided consistent identification of seed lots performance, and have produced information comparable to those from recommended seed vigor tests, thus demonstrating a suitable sensitivity for a rapid and objective evaluation of physiological potential of cucumber seeds. Analyses of four-days-old cucumber seedlings using the SVIS ® are more accurate and growth/uniformity does not affect the precision of results.

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Section: Resultssupporting

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Assessment of physiological potential of cucumber seeds using the software Seedling Vigor Imaging System® (SVIS®)

Chiquito¹,

Gomes²,

Marcos-Filho³

2012

Rev. bras. sementes

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“…The samples of each lot (6 g each) were distributed to form a single layer on the surface of a metal mesh suspended within the box. Seed samples were kept in a jacketed water chamber at 41 °C, during 96 hours (Lima and Marcos-Filho, 2009). After aging, a germination test evaluated the mean percentage of normal seedlings four days after sowing.…”

Section: Methodsmentioning

confidence: 99%

“…Seedling Length: evaluated by a computer program of seedling image analysis, Seed Vigor Imaging System ® (Hoffmaster et al, 2003), described by Marcos-Filho et al (2009), providing the individual seedling length originated from each seed submitted to the embryonic area evaluation. Seeds were placed in paper towel rolls (25 seeds per roll) to germinate, as previously described, with an evaluation 4 days after sowing.…”

Section: Methodsmentioning

confidence: 99%

Semi-automated assessment of the embryonic area of cucumber seeds and its relationship to germination and seedling length

2013

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-Automated evaluations are highly useful for the seed industry to provide reliable information about different parameters of seed quality and fast results and to reduce errors based on human visual analysis. The objective of this research was to identify variations in the degree of embryo development in commercial cucumber seed lots and their relationship with physiological potential. Seeds of Supremo and Safira cultivars (four lots each), with germination above 90%, were X-rayed, evaluated according to embryonic area (using the Tomato Analyzer software) and germinated (4 days at 25 °C); germination percentage and seedling length data were obtained. The average seed embryo area was 79.7 and 80.9% (Supremo and Safira, respectively), ranging from 4.4 and 1.0 percentage points among the lots of each cultivar. The semiautomated analysis using the Tomato Analyzer software identifies small variations in the embryonic development of cucumber seed lots; seeds with an embryonic area less than 78.1% were more likely to produce less developed seedlings.Index terms: Cucumis sativus, quality control, imaging analysis, x-rays.Avaliação semiautomática da área embrionária de sementes de pepino e sua relação com a germinação e crescimento de plântulas RESUMO -A automação das avaliações de diferentes atributos da qualidade de sementes é altamente desejável pela indústria de sementes, pois além da rápida obtenção de resultados, reduz erros humanos de interpretação decorrentes da análise baseada em estimativas visuais. Com o objetivo de identificar variações do grau de desenvolvimento embrionário em sementes de pepino de lotes comerciais, bem como sua possível relação com o potencial fisiológico, sementes das cultivares Supremo e Safira (quatro lotes cada), com germinação mínima de 90%, foram radiografadas, submetidas à avaliação da área embrionária (software Tomato Analyzer) e avaliadas quanto à germinação (4 dias a 25 °C) e comprimento de plântulas. A área embrionária média das sementes foi de 79,7 e 80,9% (cultivares Supremo e Safira, respectivamente), com variações de 4,4 e 1,0 pontos percentuais entre os lotes de cada cultivar, respectivamente. A análise semiautomatizada, realizada com o auxílio do software Tomato Analyzer, possibilita a identificação de variações estreitas no grau de desenvolvimento embrionário de lotes de sementes de pepino, uma vez que as sementes cuja área embrionária ocupa espaço inferior a 78,1% da cavidade interna são mais propensas a originarem plântulas menos desenvolvidas.Termos para indexação: Cucumis sativus, controle de qualidade, análise de imagens, raios-x.

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“…De acordo com Lima & Marcos Filho (2009) O comprimento do hipocótilo e raiz das plântulas foi realizado com quatro subamostras de 25 sementes, que foram semeadas em rolos de papel germitest, utilizando três folhas umedecidas com água destilada, na proporção de 2,5 vezes o peso do papel seco. Foram semeadas 20 sementes para cada repetição sobre uma linha traçada longitudinalmente a 2 cm da borda superior do rolo.…”

Section: Introductionunclassified

Effect of Drying and Priming on Germination and Vigor Os Cucumber Seeds

Theodoro

Cândido

Alves

2012

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RESUMO:O condicionamento osmótico é uma técnica que busca aumentar a velocidade de germinação, uniformidade das plântulas no campo e até aumentar a porcentagem de germinação, o que é de grande interesse ao produtor. Assim, no presente trabalho foram utilizadas três doses de polietileno glicol (-0,4; -0,8 e -1,2MPa) seguidas ou não de secagem em ambiente de laboratório por 48 horas. Foram avaliados testes de germinação e vigor (primeira contagem, índice de velocidade de germinação, emergência, comprimento do hipocótilo e raiz e massa de matéria seca da parte aérea e raiz). A secagem das sementes de pepino não foi eciente para manter os efeitos benécos obtidos no condicionamento osmótico. O condicionamento osmótico utilizando polietileno glicol seguido da semeadura aumenta a velocidade de germinação de sementes de pepino, sendo que o potencial osmótico indicado situa-se entre -0,8 e -1,2MPa. Palavras-chave: Cucumis sativus L., osmocondicionamento, desidratação das sementes. ABSTRACT:Priming is a technique that seeks to increase the speed of germination, seedling emergence uniformity and even increase the germination percentage, which is of great interest to the producer. Thus, in this study we used three doses of polyethylene glycol (-0,4; -0,8 and -1,2MPa) followed or not by drying in a laboratory environment for 48 hours. We evaluated the germination and vigor (rst count, speed of germination, emergence, hypocotyls length and root and weight of shoot and root). Drying the seeds

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Condicionamento fisiológico de sementes de pepino e relação com desempenho das plantas em campo

Cited by 13 publications

References 20 publications

Assessment of physiological potential of cucumber seeds using the software Seedling Vigor Imaging System® (SVIS®)

Assessment of physiological potential of cucumber seeds using the software Seedling Vigor Imaging System® (SVIS®)

Semi-automated assessment of the embryonic area of cucumber seeds and its relationship to germination and seedling length

Effect of Drying and Priming on Germination and Vigor Os Cucumber Seeds

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