Avaliação do potencial fisiológico de sementes de soja por meio de imagens

Wendt, Letícia; Gomes-Júnior, Francisco Guilhien; Zorato, Maria de Fátima; Moreira, Gláucia Cristina

doi:10.1590/s1983-40632014000300011

Cited by 16 publications

(23 citation statements)

References 6 publications

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“…Among the techniques available, X-ray analysis has been used to evaluate the internal morphology of seeds, making it possible to study the relationship between the occurrence of problems (mechanical damage, plant tissue malformation, and insect and microorganism damage) and physiological potential. Various studies have already been performed on seeds of different species and have shown the effectiveness of X-ray tests on identification of injuries associated with loss of germination, including studies on sweet corn (Gomes-Junior and Cicero, 2012), rice (Silva et al, 2014), and soybean (Wendt et al, 2014). In addition, X-ray images of seeds can be associated with other computerized image techniques for the purpose of increasing the effectiveness of seed analysis (Gomes-Junior, 2010).…”

Section: Introductionmentioning

confidence: 99%

Image analysis to evaluate the physiological potential and morphology of pearl millet seeds

Javorski¹,

Castan²,

Silva³

et al. 2018

J. Seed Sci.

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The use of fast and precise procedures for seed analysis is an important factor for making decisions at different stages of seed production. The aim of this study was to evaluate the occurrence of internal damage and associate morphological traits of pearl millet seeds with their physiological potential, and evaluate seed vigor using the Seed Vigor Imaging System (SVIS®) compared to other traditional vigor tests. Eight seed lots of the pearl millet cultivar ADR 300 were analyzed for germination, vigor (first count, accelerated aging, cold test, and SVIS®), internal morphology (X-ray), and morphological parameters (perimeter, area, and roundness). The X-ray test is effective in evaluating the internal morphology of pearl millet seeds, allowing identification of mechanical damage and of deteriorated and malformed tissues, making it possible to establish a relationship between the damage observed and the negative effect on germination. SVIS® analyses on two-day-old seedlings are a reliable method for assessing seed vigor of pearl millet. Parameters of perimeter and area of the seeds are related to their physiological potential.

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Section: Introductionmentioning

confidence: 99%

Image analysis to evaluate the physiological potential and morphology of pearl millet seeds

Javorski¹,

Castan²,

Silva³

et al. 2018

J. Seed Sci.

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“…The seeds with 25% moisture content, for example, showed 96% germination. As observed by Holtz and Reis (2013) and Xavier et al (2015), this fact is usually related to the seeds storage in the field conditions, which ultimately affects not only the seeds physical quality but also physiological attributes such as germination, mainly due to the seeds exposure to fluctuations in temperature and relative humidity accelerating the deterioration. The relationship observed between germination and seed moisture content corroborated the results observed for the dry matter of seeds during maturation, since the largest dry matter accumulation occurred at the moisture contents of 55% (253.62 mg.seed -1 ), corresponding to the maximum germination potential of the seeds (Figure 2b).…”

Section: Resultsmentioning

confidence: 89%

“…Drying soybean seeds with moisture contents above 30% at temperatures of 50 °C increased the damage at the cellular level, particularly in the area of the embryonic axis of the soybean seeds (Silva et al, 2007;Afrakhteh et al, 2013), possibly because of its external location in the seed and the relatively thin protective tegument (Pinto et al, 2012). The development of normal seedlings perhaps was compromised by damage in the hypocotyl-radicle axis, which reduced the ability of the seeds to absorb reserves and produce vigorous seedlings (Surki et al, 2012;Wendt et al, 2014;Pereira et al, 2015).…”

Section: Resultsmentioning

confidence: 99%

“…Soybean seeds with different physiological quality levels showed differences in the parameters related to the seedling establishment, with the values associated with the emergence decrease as the physiological quality decreased (Diniz et al, 2013;Cantarelli et al, 2015). Therefore, production components, such as the initial and final stand, number of pods per plant, number of seeds per pod, and productivity can be affected (Wendt et al, 2014).…”

Section: Resultsmentioning

confidence: 99%

“…In addition, leaving the crop in the field exposes the seeds to adverse conditions that may reduce the performance of the seeds. It is, therefore, necessary to obtain a better understanding of the maturity stage at which the seeds acquire the ability to tolerate drying and the time at which the maximum germination and vigor potential are reached, under different climatic conditions (Carvalho and Novembre, 2012;Zadeh et al, 2014;Donato et al, 2015;Xavier et al, 2015;Castro et al, 2016). Besides, it is important to know the adequate temperature to apply to the seeds as long as the moisture content decreases while seeds remain in the field conditions.…”

Section: Introductionmentioning

confidence: 99%

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Physiological potential of soybean seeds after maturation and submitted to artificial drying

et al. 2017

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-This study evaluated the physiological potential of soybean seeds harvested during two seasons, on different maturation stages and subjected to different drying temperatures. The seeds were harvested at the maturations stages R7, R7 + 2, R7 + 3, R7 + 5, R7 + 6, R7 + 7, R7 + 10 and R7 + 12 days (55, 50, 45, 40, 35, 30, 25, and 20% of moisture content). For each maturation stage, seeds were divided into three samples: one sample was used to directly evaluate the physiological potential, and the others were dried at 40 °C and 50 °C, until reaching the moisture content of 11.5%. The physiological potential was evaluated through germination test, first germination count of germination, accelerated aging, modified cold, electrical conductivity and seedling emergence. The maximum physiological potential of seeds is achieved at the moisture content of 55%, the point that the dry matter is maximum. The seeds became tolerant to artificial drying approximately at the stage R7 + 7 days (30% of moisture content). Germination and vigor of the soybean seeds reduce as the drying temperature is increased from 40 °C to 50 °C, and this effect is enhanced when the seeds show moisture contents above 30%.Index terms: Glycine max L., seed development, germination, seed drying, vigor.Potencial fisiológico de sementes de soja durante a maturação e submetidas à secagem artificial RESUMO -O presente trabalho teve como objetivo avaliar o potencial fisiológico de sementes de soja provenientes de duas épocas de semeaduras, em diferentes estádios de maturidade, submetidas a diferentes temperaturas de secagem. As sementes foram colhidas nos estádios de maturação R7, R7 + 2, R7 + 3, R7 + 5, R7 + 6, R7 + 7, R7 + 10 e R7 + 12 dias (55, 50, 45, 40, 35, 30, 25 e 20% de teor de água). Para cada estádio, houve a separação das sementes em três partes, sendo uma diretamente submetida à avaliação do potencial fisiológico, e as outras secas a 40 °C e 50 °C, até atingirem o teor de água de 11,5%. O potencial fisiológico foi avaliado pela germinação, primeira contagem, envelhecimento acelerado, frio modificado, condutividade elétrica e emergência. O máximo potencial fisiológico é alcançado com 55% de teor de água, momento onde o acúmulo de massa seca é máximo. As sementes tornam-se tolerantes à dessecação próximo ao estádio R7 + 7 dias (30% de teor de água). Germinação e vigor das sementes de soja reduzem com o aumento da temperatura de secagem de 40 °C para 50 °C, sendo o efeito potencializado quando os teores de água estão acima de 30%.Termos para indexação: Glycine max L., desenvolvimento de sementes, germinação, secagem de sementes, vigor.1

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Discrimination of Urochloa seed genotypes through image analysis: Morphological features

et al. 2021

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The tropical forage species seed market, including signalgrass (Urochloa), is expanding. There is demand for fast, automated methods that can be implemented for quality control of the seeds produced, with the aim of evaluating physical purity. In this respect, seed morphological features obtained by processing radiographs with the Tomato Analyzer software and of red-green-blue obtained and processed on the Groundeye device were used to test differentiation of materials of the Urochloa genus. Seeds of Urochloa brizantha (A.Rich.) R.D.Webster cvv. BRS Piatã, Marandu, and Xaraés MG-5; Urochloa ruziziensis (R.Germ. & C.M.Evrard) Crins cv. Ruziziensis; and Urochloa decumbens (Stapf) R.D.Webster cv. Basilisk were evaluated. Morphological features obtained by Tomato Analyzer allowed differentiation of Urochloaseeds at an accuracy level greater than 80% for all the materials evaluated. Seed area was one of the features that allowed this differentiation. The Groundeye system also showed high efficiency in distinguishing Urochloa seeds, except for Piatã and Xaraés, which exhibited morphological similarity, and lower accuracy levels in distinguishing their seeds (<50%). Additional studies should be conducted to evaluate Urochloa seed lots from other origins to validate the use of image analysis techniques for the purpose of obtaining morphological features and to assist in determining the physical purity of the materials. INTRODUCTIONCorrect identification of species and even cultivars in the seed analysis laboratory is a time-consuming operation (Chaugule & Mali, 2016) because of the similarity among seeds of the same genus, or even as a result of the absence of specific morphological descriptors of the materials under Abbreviations: LDA, linear discriminant analysis; RGB, red-green-blue; WMIH, width at mid-height.

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Avaliação do potencial fisiológico de sementes de soja por meio de imagens

Cited by 16 publications

References 6 publications

Image analysis to evaluate the physiological potential and morphology of pearl millet seeds

Image analysis to evaluate the physiological potential and morphology of pearl millet seeds

Physiological potential of soybean seeds after maturation and submitted to artificial drying

Discrimination of Urochloa seed genotypes through image analysis: Morphological features

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