ARTÍCULO
TITULO

Response of wheat seeds to zinc application during storage

Elisa S. Lemes    
Lilian M. de Tunes    
Andreia da S. Almeida    
Geri E. Meneghello    
Sandro de Oliveira    
Marlove F. B. Muniz    

Resumen

Seed coating is among the most potentially beneficial treatments to enhance seed performance, contributing to the improvement of crop stands due to its role in improved seedling development. Thus, micronutrients such as zinc exhibit potential for use in seed coatings. The objective of this research is to evaluate the effect of coating wheat seeds with zinc sulfate on traits that are related to seed quality during storage and nutrition efficiency during seedling growth. The levels of ZnSO4 used were 0, 1, 2, 3 and 4 mL kg-1 seed. After 0, 3 and 6 months of storage, the germination percentage, mean root length, root dry mass, seedling emergence, nutritional efficiency (absorption, transport and use) and zinc content in the seeds were evaluated. Seed coating with ZnSO4 increased seedling dry weight and zinc content in roots, which are the primary sink for this nutrient. Higher rates of ZnSO4 coating resulted in higher absorption efficiency and a concomitant decrease in Zn transport and use efficiency. Thus, the application of appropriate doses of zinc to seeds increases the accumulation of this nutrient, resulting in well-nourished plants that present improved initial development under adverse conditions.Recubrimiento de semillas es uno de los tratamientos potencialmente más beneficioso para mejorar el rendimiento de la semilla. También contribuye a proporcionar a los productores con mejores puestos de cultivos derivados de un mejor desarrollo de la plántula, que destaca la posibilidad de uso de micronutrientes como el zinc para el recubrimiento de semillas. El objetivo de esta investigación es evaluar el efecto del recubrimiento de semillas de trigo con sulfato de zinc, en las características relacionados con la calidad de la semilla durante el almacenamiento y la eficiencia nutricional de respuesta durante el crecimiento de plántulas. Las semillas fueron tratadas con 0, 1, 2, 3 y 4 mL de ZnSO4 por kg de semillas. Después de un período de 0, 3 y 6 meses de almacenamiento fueron evaluados porcentaje de germinación, la longitud media de la raíz, materia seca de la raíz, la emergencia de plántulas, eficiencia nutricional (absorción, transporte y uso) y el contenido de zinc en las semillas. Recubrimiento de semillas con ZnSO4 aumentó materia seca de plántulas y el contenido de zinc en las raíces. Por lo tanto, con los resultados obtenidos en este estudio, se observó que la aplicación de dosis apropiadas de zinc en las semillas proporciona una acumulación de este nutriente que se traduce en una planta bien alimentada, que presentan un mejor desarrollo inicial en condiciones adversas.

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