The objective of this study was to compare different vigor tests used to evaluate physiological quality in mogango seeds, and the relationship between the results obtained in the laboratory and field performance. The lots were evaluated by the following tests: standard germination, first count of germination, traditional accelerated aging and with non-saturated NaCl solution (both at 41ºC/48 and 72h) and compared with emergence and plant development. The plants were evaluated at fifteen, twenty five and thirty five days after sowing. Plant height, number of leaves and dry weight were estimated. A randomized complete block design was used with four treatments (lots) and four replications. Based on the results it was concluded that traditional 72h accelerated aging provided a better differentiation among mogango seed lots with different physiological quality. Variations in mogango seed lots can affect the initial plant performance, especially plant height and dry weight.
Cucurbita pepo; vigor; plant establishment
