“Influence of Bio-Regulators on the Seed Germination and Seedling Growth of Onion Cultivars - Doi: 10.4025 actasciagron.V34i2.13401”. Acta Scientiarum. Agronomy, vol. 34, nº 2, outubro de 2011, p. 187-92, https://doi.org/10.4025/actasciagron.v34i2.13401.