论文部分内容阅读
低温对苹果采后致腐真菌生长的抑制作用大于气体成分变化对其的影响。要完全抑制青霉菌（Penicilliumexpansum）菌丝的生长，在空气中需5℃以下低温，或5℃＋5％CO2＋2％～3％O2。炭疽病菌（Glomerellacingulata）菌丝生长可被5℃以下低温或10℃＋10％CO2＋2％～3％O2完全抑制。完全抑制霉心病菌（Trichotheciumroseum）、干腐病菌（Botryosphaeriaberengeriana）、轮纹病菌（Botryosphaeriaberengerianaf．sp．piricola）菌丝生长需10℃以下低温或15℃＋15％CO2＋2％～3％O2。CO2的抑菌作用与温度密切相关。温度高于20℃时，抑菌作用明显下降。五种病原菌在正常空气中起始生长天数与温度的平方根呈显著负相关（r＝－0．8839～－0．9495）；在20℃时，起始生长天数与CO2呈显著正相关（r＝0．9318～0．9861）。
The inhibitory effect of low temperature on the growth of post-harvest apple-induced fungi was greater than the change of gas composition. To completely inhibit the growth of Penicilliumexpansum mycelia, cryogenic air below 5 ° C or 5 ° C + 5% CO 2 + 2% -3% O 2 should be used. Colletotrichum gloeosporioides (Glomerellacingulata) mycelial growth can be 5 ℃ low temperature or 10 ℃ +10% CO2 +2% ~ 3% O2 completely inhibited. Trichothecium roseum, Botryosphaeria berengeriana and Botryosphaeria berengerianaf sp. Piricola could completely inhibit the growth of mycelia under low temperature of 10 ℃ or 15 ℃ + 15% CO2 + 2% ~ 3% O2. The bacteriostatic effect of CO2 is closely related to temperature. When the temperature is higher than 20 ℃, the bacteriostatic effect obviously drops. There was a significant negative correlation between the days of initial growth of five pathogens and the square root of temperature in normal air (r = -0.8839 ~ -0.9495). At 20 ℃, the number of days of initial growth was positively correlated with CO2 (r = 0.9318 ~ 0.9861).