抑制葡萄灰霉菌适宜SO2浓度筛选研究

摘要

The objective of the paper is to investigate the sulfur dioxide (SO2) to inhibit Botrytis cinera Pers to control the decay of grapes during storage to select suitable SO2 concentration inhibiting Botrytis cinera Pers to provide a bass for controlling decay of grapes during storage.The fuming treatment medium with different SO2 concentrations and Botrytis cinera Pers on the surface of grapes fruit were used to study inhibition effects on Botrytis cinera Pers and effects on grapes quality and to select suitable SO2 treatment concentration.Resuts showed that there was positive correlation between the inhibition effect of Botrytis cinera Pers in vitro and the inhibition and concentration of Botrytis cinera Pers.The significant effect of SO2 to control Botrytis cinerea Pers was beginning from 200μL/L.Grapes inoculated Botrytis cinerea Pers bacteriostatic experiment showed,200 μL/L or 250 μl/L treatment effect was significantly better than the other concentrations.But 250μl/L SO2 handling was harmful to grape quality.Suming up the inhibition of Botrytis cinerea Pers and the affection of grape fruit quality,SO2 concentration of 200 μL/L was suit for embalmed thompson seedless storage.%采用不同SO2浓度熏蒸处理培养基及表面接种葡萄果实上的灰霉菌(Botrytis cinera Pers),研究其对灰霉菌的抑制效果及对葡萄品质的影响,筛选适宜的SO2处理浓度.体外抑菌试验表明,SO2对灰霉菌的抑制作用与浓度成正相关,从200 μL/L开始抑制效果显著,SO2对表面接种灰霉菌葡萄的抑菌试验,SO2浓度为200,250 μL/L的处理效果明显好于其他浓度,但250 μL/L SO2处理对葡萄品质产生了伤害,综合对灰霉菌的抑制及对葡萄果实品质的影响,SO2浓度为200 μL/L适宜无核白葡萄贮藏防腐处理.