Qualidade de sementes de quatro cultivares de soja, colhidas em dois locais no estado do Mato Grosso do Sul

Minuzzi, Andréia; Braccini, Alessandro de Lucca e; Rangel, M. A. S.; Scapim, Carlos Alberto; Barbosa, Mauro Cezar; Albrecht, Leandro Paiola

doi:10.1590/s0101-31222010000100020

Cited by 57 publications

(56 citation statements)

References 11 publications

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“…For Minuzzi et al (2010), the qualitative reduction of the physiological parameters may be related to the seed respiratory process, which, in turn, may be favored by situations of frequent rainfall during the pre-harvesting period. Therefore, the precipitations caused at 10, 15 and 20 days after the R 8 stage resulted in the acceleration of the physiological quality deterioration process of the soybean seeds from day 10 of delayed harvesting.…”

Section: Causes Of Variationmentioning

confidence: 99%

Physiological and sanitary quality of soybean seeds harvested at different periods and submitted to storage1

Zuffo

Júnior

Zambiazzi

et al. 2017

Pesqui. Agropecu. Trop.

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Delayed harvesting may affect the physiological quality of soybean seeds, due to adverse conditions in the field. This study aimed to evaluate the physiological and sanitary quality of soybean seeds (BRS 820 RR® cultivar) harvested at eight periods (0; 5; 10; 15; 20; 25; 30; and 35 days after the R8 phenological stage - full maturity) and stored for two periods (0 and 8 months). The following evaluations were carried out: moisture content, germination and emergence rate, emergence speed index, total plant dry mass, accelerated aging, electrical conductivity, mechanical damage, vigor and viability (tetrazolium) and sanitary quality of the seeds. The delayed harvesting of soybean seeds from 10 days after R8 impairs seed vigor and germination, in addition to increase the incidence of pathogens. Regardless of the harvesting period, the soybean seeds stored for eight months showed a reduction in their physiological quality, with an increase in the incidence of Phomopsis spp.

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Section: Causes Of Variationmentioning

confidence: 99%

Physiological and sanitary quality of soybean seeds harvested at different periods and submitted to storage1

Zuffo

Júnior

Zambiazzi

et al. 2017

Pesqui. Agropecu. Trop.

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“…However, these authors allowed a longer time of exposure to the elements, since the seeds remained in the field until stage R8, R8 + 15 days and R8 + 30 days. Minuzzi et al (2010) indicate that obtaining higher quality of seeds occurs when the crop is carried out seven days after stage R7.…”

Section: Germinationmentioning

confidence: 99%

Physiological quality of soybean seeds produced under artificial rain in the pre-harvesting period

et al. 2016

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-The objective of this experiment was to evaluate responses of soybean cultivars seeds (with different levels of lignin) considering harvest postponement under the incidence of water and the effect of storage. The experiment was conducted in Iraí de Minas, Brazil using a randomized block design with three replications under a 5 x 3 x 3 factorial arrangement, with five soybean cultivars (NK 7059 RR, SYN 1163 RR, SYN 9070 RR, AS 7307 RR and SYN 1283 RR), three harvesting periods (R8, R8 + one rain simulation in the pre-harvesting period and R8 + two simulations in the pre-harvesting period) under three storage times (0, 90 and 180 days). Seeds were evaluated for their chemical composition (lignin contents), the percentage of moisture damage using the tetrazolium test and physiological quality (germination, accelerated aging, conductivity test, seedling emergence and emergence index). Cultivar AS 7307 RR had the highest lignin content in the integument, the lowest percentage of damage by moisture and the highest physiological quality. Cultivars NK 7059 RR and SYN 1163 RR had the lowest lignin contents in the integument and the highest moisture damage. Electrical conductivity increased after storing all cultivars.Index terms: Glycine max, lignin, storage.Qualidade fisiológica de sementes de soja submetidas à chuva artificial na pré-colheita RESUMO -Objetivou-se com este trabalho avaliar o desempenho de sementes de cultivares de soja com diferentes teores de lignina considerando o retardamento da colheita sob incidência artificial de chuva, e ao longo do armazenamento. O ensaio foi conduzido em Iraí de Minas, MG, em blocos casualizados com três repetições e esquema fatorial 5 x 3 x 3, sendo cinco cultivares de soja (NK 7059 RR, SYN 1163 RR, SYN 9070 RR, AS 7307 RR e SYN 1283 RR), três épocas de colheita (R8, R8 + uma simulação de chuva na pré-colheita e R8 + duas simulações de chuva na pré-colheita), e três épocas de armazenamento (0, 90 e 180 dias). As sementes foram avaliadas quanto à composição química (teor de lignina), porcentagem de danos por umidade usando o teste de tetrazólio, e a qualidade fisiológica (germinação, teste de envelhecimento, condutividade elétrica, emergência, índice de emergência). A cultivar AS 7307 RR apresentou maior teor de lignina no tegumento, menor porcentagem de danos por umidade e melhor qualidade fisiológica. As cultivares NK 7059 RR e SYN 1163 RR apresentam menores teores de lignina no tegumento e maiores danos por umidade. Os valores de condutividade elétrica aumentam com o armazenamento para todas as cultivares.Termos para indexação: Glycine max, lignina, armazenamento.

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“…The storage of soybean seeds in tropical and subtropical environments is the most difficult stage of the production chain (Minuzzi et al, 2010). Since its beginning, still in the plant, when the seed reaches its physiological maturity point, according to Silva et al (2010), until the end, at planting, the storing conditions are adverse because of the predominant high temperatures and variable relative humidity.…”

Section: Introductionmentioning

confidence: 99%

Physiological quality of soybean seeds artificially cooled and stored in different packages

Virgolino

Resende

Gonçalves

et al. 2016

Rev. bras. eng. agríc. ambient.

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A B S T R A C TThe aeration of seeds with artificially cooled air and their storage in big-bag packages aim to lengthen the shelf life while maintaining the quality. Thus, the objective was to study the effects of cooling before storage on germination and vigor of soybean seeds stored in trifoliate kraft paper bag and big bag in non-air-conditioned environment. Seeds of soybean cultivar NA 7337 RR were mechanically harvested in March 2013, holding an average moisture content of 18% w.b. In June, 16,000 kg of seeds were processed and cooled to 18 °C. Equal amount of non-cooled seeds was used as a control. Equally divided in kraft paper and in big bags, and combining cooling and packaging, the seeds were stored for three months and analyzed for moisture content, germination and vigor. Cooling to room temperature and different packaging types had similar effects on seed quality. Big bags packing showed better efficiency in retaining the moisture content of cooled seeds. No direct effects of cooling could be identified prior to storage on the germination and vigor of soybean seeds.Qualidade fisiológica de sementes de soja resfriadas artificialmente e armazenadas em diferentes embalagens R E S U M O A aeração de sementes com ar artificialmente resfriado e o armazenamento em embalagens do tipo 'big bags' , podem proporcionar melhor manutenção da qualidade fisiológica. Assim, objetivou-se avaliar a qualidade fisiológica de sementes de soja resfriadas artificialmente e armazenadas em diferentes embalagens em ambiente não climatizado. Sementes de soja, cultivar NA 7337 RR, foram colhidas mecanicamente em março de 2013, com teor de água médio de 18% (b.u.). Em junho 16.000 kg de sementes foram beneficiados e resfriados até 18 ºC. Quantidade semelhante de sementes não resfriadas foi utilizada como controle. Divididas em embalagens de papel 'kraft' e em 'big bags' combinando resfriamento e embalagem, as sementes foram armazenadas por três meses e analisadas quanto ao teor de água, germinação e vigor. O resfriamento e a temperatura ambiente e os tipos diferentes de embalagem tiveram efeitos semelhantes na qualidade fisiológica das sementes. As embalagens 'big bags' foram mais eficientes na manutenção do teor de água das sementes resfriadas. Não foram identificados efeitos diretos do resfriamento na germinação nem no vigor das sementes de soja, antes do armazenamento.

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Qualidade de sementes de quatro cultivares de soja, colhidas em dois locais no estado do Mato Grosso do Sul

Cited by 57 publications

References 11 publications

Physiological and sanitary quality of soybean seeds harvested at different periods and submitted to storage1

Physiological and sanitary quality of soybean seeds harvested at different periods and submitted to storage1

Physiological quality of soybean seeds produced under artificial rain in the pre-harvesting period

Physiological quality of soybean seeds artificially cooled and stored in different packages

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