Tratamento de sementes de soja com Cobre-polifenólico

Abstract

The hypothesis of this work is based on the possibility to improve the germination and development of soybean seedlings through the treatment of seeds with polyphenolic copper. Thus, the objective of this work was to verify the effect of different doses of polyphenolic copper on germination and initial development of seedlings in different soybean varieties. The work was carried out at the Seed Technology Laboratory at the Federal University of Mato Grosso Do Sul, Chapadão do Sul Campus – MS, using soybean seeds of three BRASMAX varieties: Olimpo (80I82RSF IPRO); Cheetah (67I68RSF IPRO); and Cyclone (81K83RSF CE). The varieties were analyzed separately, in a completely randomized experimental design with six doses of the copper-polyphenolic product (20% copper; density 1.48): (0.0; 0.1; 0.2; 0. 3; 0.4; 0.5 mL kg-1 of seed) and four repetitions. The characteristics evaluated were initial water content, percentage of germination, length of root and shoot, dry mass of root and shoot and quantification of copper in the seed. The data obtained were submitted to regression analysis. With the present work it was possible to observe that the treatment of seeds with different doses of polyphenolic copper contributes to the improvement of characteristics related to the quality of soybean seeds. Seed treatment with polyphenolic copper contributes to the increase in germination of soybean seeds of the Guepardo and Ciclone varieties. The length and dry mass of soybean seedlings of the Olimpo, Guepardo and Ciclone varieties follow the increase in the applied polyphenolic-copper dose. The root length and dry mass of soybean seedlings increased with different doses of polyphenolic copper. In General, the seed treatment with polyphenolic copper ate dose 0,4 and 0,5 mL.kg-1 seed, contribute to the improvement of characteristics related to physiological quality of soybean seeds and seedlings development. The copper content in seeds increases linearly with the dose up to 0,5 mL.kg-1 Seed.