Growth and physiological responses of cabbage cultivars biofortified with inorganic selenium fertilizers

Autor(es)

de Almeida Junior, Hilario ; Carmona, Victor Vergara ; Dutra, Alexson Filgueiras ; Cecilio Filho, Arthur Bernardes

• Tipo de documento: Artigo Científico
• Fonte: Scientia Horticulturae; v. 302, p. 11-pg., 2022-08-25.

Resumo

Selenium (Se) is essential for humans and animals. Problems associated with Se deficiency in the population diets is spread throughout the world and its related to low Se concentration in the foods. This study aimed to evaluate the effectiveness of different sources and Se concentration on agronomic biofortification of cabbage and its effects on nutritional and photosynthetic parameters. Two cabbage cultivars were treated with five Se concentrations (0, 5, 15, 30 and 60 mu M) and two sources (selenate and selenite). The concentration of Se in the cabbage heads increased continuously up to 60 mu M, but with no effect on the N, P and S concentrations. At low Se concentration (5 mu M), there was an increase in the net photosynthesis, stomata conductance, intern carbon concentration and transpiration, besides increases in photosynthetic pigment levels, which led to an increase of over 100% in head dry mass and yield. The cultivars responded differently to the treatments, but both were highlighting the efficiency of Se fertilization in the heads. Both chemical forms of Se can be used at low concentrations (5 and 15 mu M) for the agronomic biofortification of cabbage, however, selenite demonstrated to be most efficient. (AU)

• Processo FAPESP: 14/05834-0 - Nutrição mineral, biofortificação e atividade enzimática de cultivares de repolho tratadas com selênio
• Beneficiário: Hilário Júnior de Almeida
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado