Abstract
Effects of cultivation temperature and high temperature treatment on seed-germination of rocket larkspur were investigated. The optimal temperature for seed-germination was 15~20°C, and high germination rates were also observed at alternating temperature 15/25°C (16 h/8 h) and 15/30°C (16 h/8 h). Treatment of alternating temperature 25/30°C (12 h/12 h) for 10 days before sowing was more effective than those of 25, 27.5, 30 and 25/35°C (12 h/12 h) for 5, 15 and 20 days to shorten the period of seed-germination. Using this method, seed-germination of rocket larkspur ‘Miyoshi White’ and ‘Sydney White’ became more uniform.
