Qualidade fisiológica de sementes de cultivares e linhagens de soja no Estado de Minas Gerais

Vasconcelos, Edmar Soares de; Reis, Múcio Silva; Sedyiama, Tuneo; Cruz, Cosme Damião

doi:10.4025/actasciagron.v31i2.396

Cited by 3 publications

(4 citation statements)

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“…fisiológica de sementes de soja (Pereira et al 2000, Motta et al 2002, Ávila et al 2003, Rahman et al 2013. A qualidade é a meta prioritária no processo de produção de sementes de qualquer cultura, uma vez que dela dependem a germinação e a emergência das plântulas (Vasconcelos et al 2009). …”

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“…Por fim, o efeito de ambiente respondeu por 21,90 % da variação, demonstrando a importância da escolha da época de semeadura na produção de sementes de alta qualidade. A presença do efeito ambiental e não apenas genético na variação fenotípica dos caracteres informativos da qualidade fisiológica de sementes de soja também é relatado em outros estudos (Pereira et al 2000, Vasconcelos et al 2009, Gomes et al 2012.…”

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Épocas de semeadura e desempenho qualitativo de sementes de soja

Bornhofen

Benin

Galván

et al. 2015

Pesqui. Agropecu. Trop.

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Variações na época de semeadura da soja refletem diretamente no potencial fisiológico das sementes produzidas. Este estudo objetivou identificar épocas de semeadura que maximizem qualitativamente a produção de sementes de soja. Os experimentos foram desenvolvidos em dois anos agrícolas, em esquema fatorial 2 × 4 × 6, com quatro épocas de semeadura e seis cultivares de soja (Don Mario 5.8i RR, BMX Energia RR, BMX Força RR, BRS 255 RR, BRS 294 RR e BRS 295 RR). Utilizou-se o delineamento de blocos casualizados, com três repetições. Foram avaliadas doze características informativas da qualidade de sementes de soja, por meio dos testes de germinação, dano mecânico, envelhecimento acelerado e tetrazólio. Houve efeito significativo da época de semeadura e de cultivares sobre a qualidade das sementes. Constatou-se diferença na sensibilidade das cultivares a variações na época de semeadura, quanto aos atributos qualitativos de semente. Semeaduras em meados de dezembro são recomendadas para a produção de sementes com qualidade superior.

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Épocas de semeadura e desempenho qualitativo de sementes de soja

Bornhofen

Benin

Galván

et al. 2015

Pesqui. Agropecu. Trop.

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“…The selection of superior genotypes for traits related to seed quality is therefore important (Pereira et al, 2017). For this reason, the involvement of seed technologists in genetic improvement programs has been fundamentally important to the success of these programs (Vasconcelos et al, 2009) In soybean breeding programs, the physiological quality of seeds is usually evaluated in the more advanced phases of the programs, such as in cultivation and use value (CUV) tests. However, the seed physiological quality of the lineages is of great interest to breeders to assist in decision-making.…”

Section: Introductionmentioning

confidence: 99%

Physiological quality of soybean seeds and the influence of maturity group

et al. 2022

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Productive soybean genotypes is one of the main objectives of soybean breeding programs. However, there are few studies on the selection of characteristics associated with the quality and performance of soybean seeds. The objective in this study was to predict physiological and genetic parameters associated with seed quality in segregating soybean populations derived from parents of differing maturity groups. Eight genotypes of the F2:3 segregating soybean population (numbered 163, 24, 57, 108, 164, 169, 157, and 81) cultivated in the 2018/19 harvest were evaluated. To conduct the experiment, a completely randomized design was used. The physiological quality of the seeds was evaluated by germination test, tetrazolium test, and image analysis. Statistical analyses were performed by using a mixed model approach. Greater seed vigor was observed in the genotypes 108, 164, and 169, whose results were among the best for most of the analyzed parameters. The greater mechanical damage and damage due to stink bugs can explain the lower vigor of some seeds, as observed in genotypes 57 and 163, while weathering damage did not correspond to the results of the seed vigor tests. The analyses indicated a greater influence of genetic characteristics than of relative maturity group on the responses of the genotypes. No effect of relative maturity group on soybean seed vigor was evident.

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“…The physiological quality, vigor and performance of soybean seeds may be influenced by factors such as the chosen cultivar (VASCONCELOS et al, 2009), tillage systems, crop sequence used (NAKAGAWA et al, 2003), sowing period (MOTTA et al, 2002), packaging during storage (GIURIZATTO et al, 2008), period of seed production (ALBRECHT et al, 2009), kind of combine used (MARCONDES et al, 2005;MARCONDES et al, 2010), moisture content at harvest (PESKE AND HAMER, 1997), among other factors.…”

Section: Introductionmentioning

confidence: 99%

Physiological Quality of Soybean Seeds Under Mechanical Injuries Caused by Combines

Pacheco¹,

Nóbrega²,

Lima³

et al. 2015

Rev. Caatinga

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-The mechanical harvesting causes injuries on seeds and may affect their quality. Different threshing mechanisms and their adjustments may also affect the intensity of impacts that machines cause on seeds. So, this study aimed at diagnosing and evaluating the effect of two combines: the first one with a threshing system of axial flow and the other one with a threshing system of tangential flow, under adjustments of concave opening (10 mm, 30 mm and 10 mm for a combine with axial flow and 3.0 mm, 15 mm and 3.0 mm for a combine with tangential flow) and three cylinder rotations on the quality of soybean seeds harvested at two moisture contents. Soybean seeds of cultivar 'ND 4910' were harvested at 16.6% moisture (mid-morning) and 13.7% moisture in the afternoon. The seeds quality was evaluated by germination tests, germination speed index (GSI), germination rate, moisture content, percentage of purity and vigor by tetrazolium test. Despite the combine, the results showed that the mechanical injury has most reduced seeds quality, at 16.6% moisture content, concave opening of 30 mm (axial) and 10 mm (tangential) and cylinder rotation of 1100 rpm (axial) and 1000 (tangential), both with the highest rotations used. The combine with tangential flow had the highest degree of seeds purity. When seeds moisture content at harvest was close to 13.7%, there was the highest seed injury, while, at 16.6%, there was the highest number of crushed soybeans, regardless the combine adjustment.

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Qualidade fisiológica de sementes de cultivares e linhagens de soja no Estado de Minas Gerais

Cited by 3 publications

References 1 publication

Épocas de semeadura e desempenho qualitativo de sementes de soja

Épocas de semeadura e desempenho qualitativo de sementes de soja

Physiological quality of soybean seeds and the influence of maturity group

Physiological Quality of Soybean Seeds Under Mechanical Injuries Caused by Combines

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