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1.
Semina ciênc. agrar ; 42(1): 71-86, jan.-fev. 2021. ilus, tab, graf
Article in English | VETINDEX | ID: biblio-1501907

ABSTRACT

Computerized seedling analysis is a promising tool for assessing seed vigor, providing reliable and less subjective results. The aim of this study was to define a method for evaluating the vigor of chickpea seeds through computerized image analysis, using the Seedling Analysis System (Sistema de Análise de Plântula - SAPL®) as a basis. Two chickpea cultivars were evaluated, consisting of five seed lots of cv. BRS Aleppo and four seed lots of cv. Cícero. Test were performed on the seeds of each cultivar for initial characterization of the physiological potential of the lots, and the results were compared with the determinations made via SAPL®. The results showed high correlations between the variables obtained from computerized analysis and from traditional vigor tests, especially for the close relationship between the cold test and low temperature germination test with the corrected vigor index (r > 0.9) evaluated on the fourth day after the beginning of the test. The total length of seedlings, length of the primary root, and growth and corrected vigor indices obtained through computerized analysis of seedlings on the 4th day after sowing allowed separation of the lots regarding vigor. Computerized analysis of seedlings using SAPL® is effective in determining the vigor of chickpea seed lots.


A análise computadorizada de plântulas tem se apresentado como uma ferramenta promissora para avaliação do vigor de sementes, proporcionando a obtenção de resultados confiáveis e menos subjetivos. O objetivo do trabalho foi definir uma metodologia para avaliação do vigor de sementes de grão-de-bico por meio da análise computadorizada de imagens, utilizando como base o Sistema de Análise de Plântula (SAPL®). Duas cultivares de grão-de-bico foram avaliadas, sendo cinco lotes da cv. BRS Aleppo e quatro lotes da cv. Cícero. As sementes de cada cultivar foram submetidas a testes para caracterização inicial do potencial fisiológico dos lotes, sendo esses comparados com as determinações feitas pelo SAPL®. Os resultados demonstraram altas correlações entre as variáveis obtidas com a análise computadorizada e os testes tradicionais de vigor, com ênfase para a estreita relação entre o teste de frio e germinação a baixa temperatura com o índice de vigor corrigido (r > 0.9), avaliado no quarto dia após o início do teste. O comprimento total de plântulas, da raiz primária e os índices crescimento e vigor corrigido obtidos por meio da análise computadorizada de plântulas no quarto dia após a semeadura permitiram a separação dos lotes quanto ao vigor. A análise computadorizada de plântulas com o uso do software SAPL® apresenta eficácia na determinação do vigor de sementes de grão-de-bico.


Subject(s)
Cicer , Cicer/growth & development , Cicer/chemistry , Molting , Image Processing, Computer-Assisted , Seeds/classification , Seeds/chemistry
2.
Semina Ci. agr. ; 42(1): 71-86, jan.-fev. 2021. ilus, tab, graf
Article in English | VETINDEX | ID: vti-31431

ABSTRACT

Computerized seedling analysis is a promising tool for assessing seed vigor, providing reliable and less subjective results. The aim of this study was to define a method for evaluating the vigor of chickpea seeds through computerized image analysis, using the Seedling Analysis System (Sistema de Análise de Plântula - SAPL®) as a basis. Two chickpea cultivars were evaluated, consisting of five seed lots of cv. BRS Aleppo and four seed lots of cv. Cícero. Test were performed on the seeds of each cultivar for initial characterization of the physiological potential of the lots, and the results were compared with the determinations made via SAPL®. The results showed high correlations between the variables obtained from computerized analysis and from traditional vigor tests, especially for the close relationship between the cold test and low temperature germination test with the corrected vigor index (r > 0.9) evaluated on the fourth day after the beginning of the test. The total length of seedlings, length of the primary root, and growth and corrected vigor indices obtained through computerized analysis of seedlings on the 4th day after sowing allowed separation of the lots regarding vigor. Computerized analysis of seedlings using SAPL® is effective in determining the vigor of chickpea seed lots.


A análise computadorizada de plântulas tem se apresentado como uma ferramenta promissora para avaliação do vigor de sementes, proporcionando a obtenção de resultados confiáveis e menos subjetivos. O objetivo do trabalho foi definir uma metodologia para avaliação do vigor de sementes de grão-de-bico por meio da análise computadorizada de imagens, utilizando como base o Sistema de Análise de Plântula (SAPL®). Duas cultivares de grão-de-bico foram avaliadas, sendo cinco lotes da cv. BRS Aleppo e quatro lotes da cv. Cícero. As sementes de cada cultivar foram submetidas a testes para caracterização inicial do potencial fisiológico dos lotes, sendo esses comparados com as determinações feitas pelo SAPL®. Os resultados demonstraram altas correlações entre as variáveis obtidas com a análise computadorizada e os testes tradicionais de vigor, com ênfase para a estreita relação entre o teste de frio e germinação a baixa temperatura com o índice de vigor corrigido (r > 0.9), avaliado no quarto dia após o início do teste. O comprimento total de plântulas, da raiz primária e os índices crescimento e vigor corrigido obtidos por meio da análise computadorizada de plântulas no quarto dia após a semeadura permitiram a separação dos lotes quanto ao vigor. A análise computadorizada de plântulas com o uso do software SAPL® apresenta eficácia na determinação do vigor de sementes de grão-de-bico.(AU)


Subject(s)
Cicer/chemistry , Cicer/growth & development , Seeds/chemistry , Seeds/classification , Molting , Image Processing, Computer-Assisted , Cicer
3.
Ci. Rural ; 49(8): e20180107, July 2019. graf, tab
Article in English | VETINDEX | ID: vti-23582

ABSTRACT

The aim of this paper was to verify the viability of digital image processing in the measurement of rice seedling and its potential use as seed vigor test. The experiment took place at the Laboratório Didático de Análise de Sementes, located in Capão do Leão (RS), using seeds of eight rice cultivars: Irga 424, Puitá Inta CL, BRS Esmeralda, SCS 116, Guri Inta CL, BRS Pampa, BRSGO Serra Dourada and Olimar. An image processing system (IPS) was used to measure length and area of shoot and root as an index of seed vigor in rice seeds. The experiment design was completely randomized with five replications. The evaluated variables were root and shoot length in graded ruler and by image, root and shoot area, and field emergence. Results obtained with the IPS were correlated with other quality tests though the Pearson tests. Determination of shoot length and leaf area of the seedlings obtained through IPS is effective for assessing the vigor of rice seeds.(AU)


O objetivo neste trabalho foi verificar a viabilidade do processamento digital de imagens na mensuração de plântulas de arroz e sua potencial utilização como teste de vigor em sementes. O experimento foi realizado no Laboratório Didático de Análise de Sementes, localizado no Capão do Leão (RS), utilizando sementes de oito cultivares de arroz: Irga 424, Puitá Inta CL, BRS Esmeralda, SCS 116, Guri Inta CL, BRS Pampa, BRSGO Serra Dourada e Olimar. Uma ferramenta de processamento de imagens (FPI) foi utilizada para mensurar o comprimento e a área da parte aérea e de raízes de plântulas de arroz de modo a classificar as sementes em níveis de vigor. O delineamento experimental foi inteiramente casualizado com cinco repetições. As variáveis avaliadas foram comprimento de raiz e parte aérea em régua graduada e pela imagem, área de raiz e parte aérea e emergência a campo. Os resultados obtidos com o FPI foram correlacionados com outros testes de qualidade por correlação de Pearson. A determinação do comprimento de parte aérea e área foliar de plântulas obtidos através do FPI é efetivo para avaliar o vigor de sementes de arroz.(AU)


Subject(s)
Seedlings/anatomy & histology , Oryza/anatomy & histology , Weights and Measures , Image Processing, Computer-Assisted , Seeds/growth & development , Plant Components, Aerial/anatomy & histology , Plant Roots/anatomy & histology
4.
Ciênc. rural (Online) ; 49(8): e20180107, 2019. tab, graf
Article in English | LILACS | ID: biblio-1045425

ABSTRACT

ABSTRACT: The aim of this paper was to verify the viability of digital image processing in the measurement of rice seedling and its potential use as seed vigor test. The experiment took place at the Laboratório Didático de Análise de Sementes, located in Capão do Leão (RS), using seeds of eight rice cultivars: Irga 424, Puitá Inta CL, BRS Esmeralda, SCS 116, Guri Inta CL, BRS Pampa, BRSGO Serra Dourada and Olimar. An image processing system (IPS) was used to measure length and area of shoot and root as an index of seed vigor in rice seeds. The experiment design was completely randomized with five replications. The evaluated variables were root and shoot length in graded ruler and by image, root and shoot area, and field emergence. Results obtained with the IPS were correlated with other quality tests though the Pearson tests. Determination of shoot length and leaf area of the seedlings obtained through IPS is effective for assessing the vigor of rice seeds.


RESUMO: O objetivo neste trabalho foi verificar a viabilidade do processamento digital de imagens na mensuração de plântulas de arroz e sua potencial utilização como teste de vigor em sementes. O experimento foi realizado no Laboratório Didático de Análise de Sementes, localizado no Capão do Leão (RS), utilizando sementes de oito cultivares de arroz: Irga 424, Puitá Inta CL, BRS Esmeralda, SCS 116, Guri Inta CL, BRS Pampa, BRSGO Serra Dourada e Olimar. Uma ferramenta de processamento de imagens (FPI) foi utilizada para mensurar o comprimento e a área da parte aérea e de raízes de plântulas de arroz de modo a classificar as sementes em níveis de vigor. O delineamento experimental foi inteiramente casualizado com cinco repetições. As variáveis avaliadas foram comprimento de raiz e parte aérea em régua graduada e pela imagem, área de raiz e parte aérea e emergência a campo. Os resultados obtidos com o FPI foram correlacionados com outros testes de qualidade por correlação de Pearson. A determinação do comprimento de parte aérea e área foliar de plântulas obtidos através do FPI é efetivo para avaliar o vigor de sementes de arroz.

5.
Electron. j. biotechnol ; Electron. j. biotechnol;18(4): 267-272, July 2015. graf, tab
Article in English | LILACS | ID: lil-757862

ABSTRACT

Background The size and weight of tomato seeds depend on genetics and can be modified by environment and management. In some species, a strong relation has been described between physical aspects of the seeds and the quality of the corresponding seedlings, but this cannot be considered a general rule. The objective of this research was to identify any association between the biometric characteristics of tomato seeds and the growth and development of their seedlings. Results A total of 18 lots of hybrid tomato seeds were used (from indeterminate plants with round fruits), belonging to six varieties from two reproduction seasons. Each lot was evaluated for seed size and weight, and seed quality, in terms of the germination test (5 and 14 d after sowing). The number of normal roots emerged with a length above 2 mm was also evaluated at d 3, 4 and 5 after sowing. The length of the seedlings and their total and partial dry weight were measured 5 d after sowing. The results indicate that there was no association between seed size and weight and subsequent seedling emergence, and only weak correlations were found between the dry weight of the radicle and cotyledon and seed size. Conclusion There is little association between the physical characteristics of the seeds and the subsequent seedlings, making it impossible to propose the use of seed weight or size as a compliment to quality evaluation tests.


Subject(s)
Solanum lycopersicum/anatomy & histology , Solanum lycopersicum/growth & development , Seedlings/anatomy & histology , Seedlings/growth & development , Seeds , Biometry
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