Grain production, fatty acid and oil profile from sunflower cultivars receiving different boron doses

  • Luiziene Soares Alves UFRRJ - Universidade Federal Rural do Rio de Janeiro
  • Larissa Gasparelo Morais Universidade Federal Rural do Rio de Janeiro
  • Munir Mauad Universidade Federal da Grande Dourados
  • Diego de Mello Conde de Brito Universidade Federal Rural do Rio de Janeiro
  • André Marques dos Santos Federal Rural University of Rio de Janeiro https://orcid.org/0000-0002-2397-3775
  • Rosane Nora Castro Universidade Federal Rural do Rio de Janeiro
  • Sonia Regina de Souza Universidade Federal Rural do Rio de Janeiro
Keywords: Helianthus annuus L, Linoleic acid, Oil content, Crude protein

Abstract

Among the main factors that affect the productivity of crops is deficiency of nutrients. Boron (B) is an essential micronutrient for plants, and sunflower is one of the most sensitive plants to deficiency of the element. Its inadequate supply can impair sunflower plants’ metabolism and grain and oil yield. The objective of this study was to assess the effect of different boron doses on the production of sunflower grains and the content and quality of the oil obtained from them. The experimental design was randomized blocks in a factorial scheme with three cultivars (Helio251, BRS323, BRS324) and four B doses (0, 2.5, 5.0, 8.0 kg ha-1). Two harvests were performed, the first in the R5 reproductive stage and the second at the end of the R9 cycle. In both cases, the levels of B in the capitulum were measured. At the end of the cycle, the grain yield, crude protein and oil content in the grains and fatty acid profile were analyzed. The cultivars responded differently to the treatments with B. The boron fertilization influenced the grain yield and oil content, but was not correlated with the profile of the majority unsaturated fatty acids and crude protein in the grains. Variations were observed in the fatty acid profile between the cultivars, an important aspect that needs to be evaluated according to the purpose of the production. In soil with lower availability of B, cultivar BRS323 was most efficient in B uptake, grain yield and oil content and quality.

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Author Biographies

Luiziene Soares Alves, UFRRJ - Universidade Federal Rural do Rio de Janeiro

 Institute of Chemistry

Laboratory of Plant Biochemistry

Larissa Gasparelo Morais, Universidade Federal Rural do Rio de Janeiro

Institute of Chemistry

Laboratory of Plant Biochemistry

Munir Mauad, Universidade Federal da Grande Dourados

Faculty of Agrarian Sciences

Diego de Mello Conde de Brito, Universidade Federal Rural do Rio de Janeiro

Institute of Chemistry

Department of Biochemistry

André Marques dos Santos, Federal Rural University of Rio de Janeiro

Institute of Chemistry

Department of Biochemistry

Laboratory of Plant Biochemistry

Rosane Nora Castro, Universidade Federal Rural do Rio de Janeiro

Institute of Chemistry

Department of Organic Chemistry

Sonia Regina de Souza, Universidade Federal Rural do Rio de Janeiro

Institute of Chemistry

Department of Biochemistry

Laboratory of Plant Biochemistry

Published
2020-03-17
How to Cite
Alves, L. S., Morais, L. G., Mauad, M., Brito, D. de M. C. de, Santos, A. M. dos, Castro, R. N., & Souza, S. R. de. (2020). Grain production, fatty acid and oil profile from sunflower cultivars receiving different boron doses. Bioscience Journal, 36(4). https://doi.org/10.14393/BJ-v36n4a2020-48018
Section
Agricultural Sciences