Figure 2From: Development of efficient catharanthus roseus regeneration and transformation system using agrobacterium tumefaciens and hypocotyls as explantsEffect of sonication intensity and time on the survival rate of hypocotyls after 10 days in MSCP1 medium. Survival rate of explants was evaluated at 10 days after co-cultivation. Only the green explants were taken into account, and the withered were thought as non-survival. Survival rate = number of green explants/number of total explants × 100.Back to article page