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Table 3 Induction rate and production rate for induced tetraploid according to various treatments of water pressure shock (6000 psi), cold and chemical shock in Korean rose bitterling, Rhodeus uyekii

From: Cytogenetic study of diploid and induced tetraploid in Korean rose bitterling, Rhodeus uyekii

  Induced tetraploid (%)
Induction rate Production rate
Control 0a 0a
Water pressure shock (6000 psi) 6.2 ± 0.64b 3.1 ± 0.54d
Water pressure shock (6000 psi) + cold shock (4 °C) 5.8 ± 0.77b 2.2 ± 0.60c
Water pressure shock (6000 psi) + chemical shock (cytochalasin B) 6.0 ± 0.59b 1.4 ± 0.58b
  1. Induction rate = (the number of induced tetraploid/total number of treated eggs) × 100
  2. Production rate = (survival rate of treated eggs/survival rate of control eggs) × induction rate of tetraploid
  3. Induction and production rate were measured at 2 days after hatched, respectively
  4. Each value is mean and standard deviation percentage of triplicate experiments (n = 30). Means in columns having different superscript letter are significantly different (P < 0.05)