Figure 4From: Abscisic acid induced freezing tolerance in chilling-sensitive suspension cultures and seedlings of riceEffect of cell inoculum size on freezing tolerance of rice cells incubated with or without ABA. Cell cultures initiated from 0.5-1.5 g of rice cells in 50 mL of medium were incubated at 25°C for 7 days with or without ABA (75 μM). Freezing tolerance was determined as described in the Methods and survival was determined by regrowth.Back to article page