Abstract:

In the greenhouse, rape leaves were sprayed with four chemical inducers (0.01% mercuric chloride, 10 mg/mL salicylic acid, 1 mmol/L riboflavin, 0.1 mmol/L BTH, respectively) from 2008 to 2009. The leaves treated with water as control. Then, all the leaves were collected and used to extract the β-1, 3-glucanase and to measure the activities. When treated with mercuric chloride, salicylic acid, riboflavin, the β-1, 3-glucanase activity raised in the begin days and declined. However, the β-1, 3-glucanase activity raised to the peak on the six day when treated with BTH. The results showed that the levels of β-1, 3-glucanase activity were all induced when treated with four chemical inducers. Moreover, the BTH has the best effect on induction of the β-1, 3-glucanase.