Assessment of the physiological potential of super sweet corn seeds

Article English OPEN
Alvarenga,Renata Oliveira ; Marcos-Filho,Julio ; Timóteo,Tathiana Silva (2013)
  • Publisher: ABRATES - Associação Brasileira de Tecnologia de Sementes
  • Subject: germination | vigor | seed testing | primary root | Zea mays L.
    mesheuropmc: food and beverages

The assessment of physiological potential is essential in seed quality control programs. This study compared the sensitivity of different procedures for evaluating super sweet corn seed vigor, focusing on the primary root protrusion test. Six seed lots, each of the SWB 551 and SWB 585 hybrids, were used. Seed physiological potential was evaluated by germination and vigor tests (speed of germination, traditional and saturated salt accelerated aging, cold test, seedling length, seedling emergence and primary root protrusion). Primary root protrusion was evaluated every 12 hours at 15 °C, 20 °C and 25 °C using two criteria (primary root protrusion and seedlings at the 2 mm root stage). It was concluded that the primary root protrusion test at 15 °C can evaluate super sweet corn seed vigor by counting the number of seedlings at the 2 mm root stage.
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