Metabolic characterization and oil profile of sunflower cultivars cultivated with increasing nitrogen doses

Authors

  • Janiélio Gonçalves da Rocha Universidade Estadual do Norte Fluminense Darcy Ribeiro
  • Luiziene Soares Alves Universidade Federal Rural do Rio de Janeiro
  • Orlando Carlos Huertas Tavares Universidade Federal Rural do Rio de Janeiro
  • Elvia Mariam Lis Martinez Stark Universidade Federal Rural do Rio de Janeiro
  • Manlio Silvestre Fernandes Universidade Federal Rural do Rio de Janeiro
  • Rosane Nora Castro Universidade Federal Rural do Rio de Janeiro
  • André Marques dos Santos Universidade Federal Rural do Rio de Janeiro
  • Sonia Regina de Souza Universidade Federal Rural do Rio de Janeiro

DOI:

https://doi.org/10.14393/BJ-v36n0a2020-47816

Keywords:

Helianthus annuus L., Biofuel., Oilseed.

Abstract

Sunflower (Helianthus annuus L.) has great economic importance due to its oil yield and quality. Among the factors influencing these parameters, nitrogen fertilization stands out. In this study we evaluated the effect of different N-urea doses (0,10,30,50,90,130 kg N-urea ha-1) at planting and 30 days after emergency on soluble fractions, oil profile and yield of three sunflower cultivars (BRS324, Catissol 01and Neon). Plants were harvested at the flowering stage for metabolic study, and at the end of the cycle for oil extraction and characterization. The Catissol 01 genotype presented the highest N-NO3- accumulation capacity, mainly in the stem. The Neon genotype presented the highest achene production at 30 and 50 kg N ha-1. Oleic oil had the highest yield, with the Catissol 01 and Neon cultivar standing out. Among the cultivars, Catissol 01 is economically more suitable for biofuel production, when cultivated at 50 kg N ha-1 since higher N doses did not result in increased oil yield.

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Author Biography

André Marques dos Santos, Universidade Federal Rural do Rio de Janeiro

 

 

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Published

2020-12-30

How to Cite

ROCHA, J.G. da, ALVES, L.S., TAVARES, O.C.H., STARK, E.M.L.M., FERNANDES, M.S., CASTRO, R.N.., SANTOS, A.M. dos and SOUZA, S.R. de, 2020. Metabolic characterization and oil profile of sunflower cultivars cultivated with increasing nitrogen doses. Bioscience Journal [online], vol. 36, pp. 266–279. [Accessed7 December 2022]. DOI 10.14393/BJ-v36n0a2020-47816. Available from: https://seer.ufu.br/index.php/biosciencejournal/article/view/47816.

Issue

Section

Agronomy