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灰霉葡萄孢(Botrytis cinerea)和交链孢(Alternaria sp.)是鲜食葡萄采后贮运中的主要病原菌,SO_2能有效地控制它们引起的鲜食葡萄的采后腐烂。作者分别设定50μl/L·1h、100μl/L·1h、200μl/L·0.5h、200μl/L·1h和对照5个处理,研究了不同剂量的SO_2对灰霉葡萄孢和交链孢的孢子、菌丝及所引起的腐烂的抑制作用。结果发现:各处理中200μl/L·1h的SO_2是抑制灰霉葡萄孢和交链孢的最佳剂量,但并不能彻底杀死灰霉葡萄孢和交链孢的孢子及菌丝,待SO_2消散后一定时间内孢子还可恢复萌发力。且在相同的剂量下,低浓度长时间的处理对孢子萌发的延缓效果优于高浓度短时间的处理。
Botrytis cinerea and Alternaria sp. Were the main pathogenic bacteria in postharvest storage and transportation of fresh grapes, and SO 2 could effectively control postharvest decay of fresh grapes caused by them. The effects of different doses of SO 2 on the growth of Botrytis cinerea and Alternaria were studied under the conditions of 50μl / L · 1h, 100μl / L · 1h, 200μl / L · 0.5h, 200μl / L · 1h and control. Spores, mycelium and the decay caused by the inhibition. The results showed that SO 2 at 200μl / L · 1h was the best dosage for inhibiting Botrytis cinerea and Alternaria alternata, but could not completely kill spores and mycelium of Botrytis cinerea and Alternaria alternata, Spores after a certain period of time can also restore the germination force. And in the same dose, the low concentration of long-time treatment of spore germination retarding effect is better than the high concentration of short-term treatment.