金属盐结合马铃薯糖苷生物碱对灰葡萄孢菌引起樱桃番茄腐烂抑制效果的研究

INHIBITION STUDY OF METAL SALTS COMBINED WITH POTATO GLYCOALKALOIDS ON CHERRY TOMATOES DECAY INDUCED BY BOTRYTIS CINEREA

试验采取人工创伤接种法处理樱桃番茄,以腐烂率为测定指标,在测定马铃薯糖苷生物碱抑制灰葡萄孢菌引起樱桃番茄腐烂的最适浓度和低浓度金属盐对灰葡萄孢菌引起樱桃番茄腐烂抑制效果的基础上,研究最适浓度糖苷生物碱与金属盐相结合的抑制效果。结果表明:当糖苷生物碱浓度达到300μmol/l时,由灰葡萄孢菌引起的樱桃番茄腐烂率最低;Na Cl、KCl、Ca Cl2、Mg SO4的浓度为0.25%、0.5%、1%、2%、3%时对灰葡萄孢菌引起的樱桃番茄腐烂均有不同程度的抑制效果;糖苷生物碱与金属盐(0.25%Na Cl、1%KCl、3%Ca Cl2、0.25%Mg SO4)结合使用时,对灰葡萄孢菌引起的樱桃番茄腐烂抑制效果最佳,比单独使用300μmol/l糖苷生物碱时樱桃番茄腐烂率分别降低了6.67%、17.83%、11.94%、14.17%,其中1%KCl与糖苷生物碱结合使用时,番茄的腐烂率仅为6.67%。

The artifical traumatic inoculation processing method for cherry tomatoes,the decay rate was selected as determination standard. On the basis of inhibition effect of optimal concentration potato glycoalkaloids and low concentration metal salts on cherry tomatoes decay induced by Botrytis cinerea. Study on cherry tomatoes inhibition effect of optimal concentration of glycoalkaloids combined with metal salts. The results showed that： lowest decay rate caused by Botrytis cinerea on cherry tomatoes when concentration of potato glycoalkaloids is 300 umol / l; cherry tomatoes decay induced by Botrytis cinerea could be inhibited by Na Cl、KCl、Ca Cl2、Mg SO4（ 0. 25% 、0. 5% 、1% 、2% 、3%） in varying degrees; The inhibition effect on cherry tomatoes decay induced by Botrytis cinerea was the best at potato glycoalkaloids combined with metal salts（ 0. 25% Na Cl、1% KCl、3% Ca Cl2、0. 25% Mg SO4） which is more inhibition effect than single use of 300 umol / l glycoalkaloids,decay rate decreased respectively about 6. 67% 、17. 83% 、11. 94% 、14. 17%,in which the decay rate of 1% KCl combined with potato glycoalkaloids was the lowest,which was 6. 67%.