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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)