不同处理对库尔勒香梨萼端黑斑病抗性诱导的研究

以库尔勒香梨为试材,通过采前喷施钙液（钙浓度0.011%,0.014%,0.017%,0.020%,0.023%）、采后1-MCP处理（1-MCP浓度1.0,2.0,3.0,4.0,5.0μL/L）、草酸处理（草酸浓度25,50,100,200,400 mmol/L）、紫外线照射处理（紫外线剂量3,6,9,12,15 kJ/m2）和水杨酸处理（水杨酸浓度1,2,3,4,5 mmol/L）5类处理,研究钙、1-MCP、草酸、水杨酸处理和紫外线照射对库尔勒香梨黑斑病抗性诱导的影响。通过LSD多重比较,4 mmol/L水杨酸对黑斑病病原菌病斑面积的抑制效果最好,其次是采前喷施0.011%钙和1.0μL/L 1-MCP处理;1.0μL/L1-MCP对黑斑病病原菌病斑深度的抑制效果最好,其次是2.0μL/L 1-MCP和50 mmol/L草酸处理。黑斑病的发病情况需从病斑面积和病斑深度两方面综合判定,1.0μL/L 1-MCP处理对两者综合的抑制效果最好,而且从经济和便捷角度而言,更具市场前景。

Research on Different Treatment in Induced Resistance to Calyx End Black Spot of Korla Pear

Taking Korla Pear as test materials,the experiment was conducted to reveal the effect of calcium,oxaic acid,salicylic acid,ultraviolet radiation on induced resistance of calyx end black spot of Korla Pear by using 5 kinds of treatment such as preharvest calcium（ 0. 011%,0. 014%,0. 017%,0. 020%,0. 023%）,postharvest 1-methylcylclopropene（ 1-MCP） treatment with concentration of 1. 0,2. 0,3. 0,4. 0,5. 0 μL /L,oxalic acid with concentration of 25,50,100,200,400 mmol /L,ultraviolet radiation with 3,6,9,12,15 kJ /m2 and salicylic acid with concentration of 1,2,3,4,5 mmol /L,and to reveal the effect of 1-MCP,oxalic acid,salicylic acid and ultraviolet radiation on induced resistance of Korla Pear. LSD multiple comparison showed that 4 mmol /L salicylic acid had the best inhibition effect on induced resistance of calyx end black spot area of Korla Pear and followed by 0. 011% calcium and 1. 0 μL /L 1-MCP treatment which had the best effect on the lesion depth of black spot pathogen and followed by 2. 0 μL /L 1-MCP and 50 mmol /L oxalic acid. The disease characteristics of calyx end black spot should be found both in the disease spot area and depth. The treatment with 1. 0 μL /L 1-MCP had the most significant inhibition effect on the two. Moreover,it had great economic and social benefit.