Does Forced Plant Maturation by Applying Herbicide with Desiccant Action Influence Seed Longevity in Soybean?

Autor(es)

Chamma, Larissa ; da Silva, Gustavo Ferreira ; Perissato, Samara Moreira ; Alievi, Cleonei ; Chaves, Prinscilla Pamela Nunes ; Giandoni, Valeria Cristina Retameiro ; Calonego, Juliano Carlos ; da Silva, Edvaldo Aparecido Amaral

• Tipo de documento: Artigo Científico
• Fonte: PLANTS-BASEL; v. 12, n. 15, p. 12-pg., 2023-08-01.

Resumo

Herbicides with desiccant actions may be used to anticipate the harvesting of soybean seeds. This technique aims to minimize the negative influence of biotic and abiotic factors on seed physiological quality at the end of the plant cycle. However, forced seed maturation with the application of herbicides can compromise the acquisition of seed quality components, especially longevity. Thus, the objective of this research was to evaluate the physiological quality of soybean seeds subjected to forced maturation with desiccants. The experiment was performed in a completely randomized design, with a treatment consisting of soybean plants subjected to the application of herbicides with desiccant action at stage R7.3 and another that underwent the natural process of maturation, that is, without herbicide application. The herbicide used was Paraquat. Seed germination, vigor (first germination count, dry mass, seedling length, time to reach 50% germination(t50), emergence index, and emergence speed), and longevity(P50) were evaluated. The herbicides did not affect germination (normal seedlings). However, the acquisition of vigor and longevity, and the preservation of seed vigor during storage were affected. Thus, the results indicate that the application of herbicide with desiccant action interrupts the process of acquisition of seed physiological quality, notably longevity in soybean seeds. (AU)

• Processo FAPESP: 17/50211-9 - Base genética e molecular da retenção de clorofila nas sementes: um passo à frente para melhorar a adaptabilidade da soja às mudanças climáticas
• Beneficiário: Edvaldo Aparecido Amaral da Silva
• Modalidade de apoio: Auxílio à Pesquisa - Temático