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Electrical conductivity of pumpkin hybrid Bárbara seeds

The electrical conductivity in the soaked seed solution has been used successfully to evaluate seed vigor. This work was developed with the objective of determining the adequate procedures to evaluate the electrical conductivity test of pumpkin (Cucurbita moschata Duch ex. Lam) seeds. For pumpkin, hybrid Bárbara, five lots of seeds, in both stages, were used, all with quality patterns (germination) above the minimum demanded by commercialization. The standard germination, first countig of germination, seedling emergency, and emergency speed index and electrical conductivity (EC) test were run. For the EC test two volumes of water (50 and 75mL), three temperatures (20, 25 and 30ºC) and eight period of seed soaking (1, 2, 4, 8, 12, 16, 20 and 24 hours) were used. So, it can be concluded that the EC test can be conducted using 50 seeds, 25ºC, 75mL and 8h of embibition period for pumpkin seeds.

Cucurbita moschata; vigor; germination; physiological potential


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