The Rice Blast Disease in Korea and Its Control with Race Prediction and Gene Rotation

Laboratory experiments were conducted to evaluate seed leakage solutes during imbibition as physiological character associated with germinability of soybeans. The electrical conductivities of the leakage solutes of soybean seeds from four varieties Essex, Pickett, Wayne and Bonus were measured at different temperatures and soaking time. As time and temperature increased, leakage solutes from the seeds become significantly pronounced. There were significant differences in the leakage solutes among varieties. The average electrical conductivity of leakage solutes from Essex and Pickett after 40 minutes soaking was significantly lower at 20, 25 and 30℃ than those of Wayne and Bonus. The conductivity of leakage solutes was negatively correlated with subsequent seedling growth of soybean seeds.