The germination capacity test to estimate the potential of seedlings emergence in the field decreases when the environmental conditions are unfavorable. However, different vigour tests have been used to identify the seed lots that have better perform in these situations. The objective of this research was to correlate the results of tests conducted in the laboratory with the emergence of sunflower seedlings in the field. For this, five lots of seeds sunflower cultivar 'Embrapa 122 V2000' were submitted to the germination and vigour tests (first count, classification of seedlings, cold test, electrical conductivity, seedling emergence in sand and in the field, emergence speed index, accelerated aging and controlled deterioration). Under adverse conditions, the seed vigour evaluated by accelerated aging, controlled deterioration and electrical conductivity presented higher correlation with sunflower plant emergence in field.
Helianthus annuus L.; establishment; physiological potential
