Erratum to: Heterosis for seed, oil yield and quality of some different hybrids sunflower - OCL 2021, 28, 25 https://doi.org/10.1051/ocl/2021010Mohamed A. Ahmed, Tamer H.A. Hassan and Hamdy A. ZahranOCL, 28 (2021) 31DOI: https://doi.org/10.1051/ocl/2021019
