Treatment of soybean seeds with mechanical damage: effects on their physiological potential

Autor(es)

Fonseca de Oliveira, Gustavo Roberto ^[1] ; Cicero, Silvio Moure ^[2] ; Krzyzanowski, Francisco Carlos ^[3] ; Gomes-Junior, Francisco Guilhien ^[2] ; Batista, Thiago Barbosa ^[1] ; Franca-Neto, Jose De Barros ^[3]

Afiliação do(s) autor(es)

^[1] Univ Estadual Paulista UNESP, Dept Prod Vegetal, BR-14884900 Botucatu, SP - Brazil

^[2] Univ Sao Paulo, Escola Super Agr Luiz de Queiroz, BR-13418900 Piracicaba, SP - Brazil

^[3] EMBRAPA Soja, Caixa Postal 231, BR-86001970 Londrina, Parana - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF SEED SCIENCE; v. 43, 2021.
• Citações Web of Science: 0

Resumo

Abstract: Mechanical damage is a serious problem for the physiological potential of soybean seeds, especially when combined with chemical treatment. The aim of this study was to investigate the effects of chemical treatment on the physiological potential of soybean seeds with increasing levels of mechanical damage. Soybean seeds (cv. M6410 IPRO) of two lots with differences in vigor were subjected to five levels of mechanical damage (zero, one, two, three, and four impacts) brought about in a controlled manner. After characterization of the effect of the impacts on seed physical integrity (X-ray, X-ray microtomography, tetrazolium, and sodium hypochlorite), the seeds were subjected to four combinations of chemical treatment with fungicides (carbendazim and thiram), insecticides (imidacloprid and thiodicarb), micronutrients (cobalt and molybdenum), polymer (Peridiam®), and drying powder (Talkum Gloss®). Seed germination and vigor were evaluated sixty days after chemical treatment. A progressive increase in mechanical damage, especially that which causes cracks in the seed coat, reduces the physiological potential of soybean seeds and increases their sensitivity to the phytotoxic effect of the chemical treatment. The physical integrity of the seed coat is crucial for the success of technologies used for chemical seed treatment. (AU)

• Processo FAPESP: 12/24683-7 - Estudo comparativo da análise radiográfica com métodos tomográficos para avaliação da ocorrência de injúrias mecânicas em sementes
• Beneficiário: Francisco Guilhien Gomes Junior
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 15/24008-6 - Desenvolvimento de técnicas de análise de imagens para avaliação do vigor e da morfologia interna de sementes
• Beneficiário: Francisco Guilhien Gomes Junior
• Modalidade de apoio: Auxílio à Pesquisa - Regular