摘要
以‘台农一号’芒果为材料,研究不同剂量短波紫外线和贮藏温度对采后芒果蒂腐病病原菌(Pestalotiopsis mangiferae)病斑直径、总酚和类黄酮含量、丙二醛、可溶性蛋白质及过氧化物酶、多酚氧化酶活性的影响。结果表明:4.9kJ/m^2辐照能显著抑制病斑直径的扩展,诱导总酚、类黄酮含量的升高,降低可溶性蛋白质的消耗,提高过氧化物酶、多酚氧化酶活性的活力,抑制丙二醛的生成;9.8kJ/m^2辐照会破坏植物细胞损伤,削弱类黄酮、可溶性蛋白质、过氧化物酶、多酚氧化酶上的诱导作用。与25℃相比,13℃下贮藏可抑制病斑直径的扩展,维持较高的总酚、类黄酮含量,抑制丙二醛的生成,延迟过氧化物酶、多酚氧化酶活力的达到峰值的时间。4.9 kJ/m^2,13℃的处理对芒果蒂腐病抑制和品质维持最好。
The effects of different doses of ultraviolet-C(UV-C)and storage temperature on the expansion of lesions caused by Pestalotiopsis mangiferae,total phenols,flavonoids,malondialdehyde,soluble protein,enzyme activities of peroxidase and polyphenol oxidase of postharvest mango fruits were studied.UV-C treatment at 4.9 kJ/m^2 significantly suppressed the expansion of lesions,enhanced the content of total phenols and flavonoids,reduced the content of soluble protein,increased the activity of peroxidase and polyphenol oxidase,and inhibited the production of malondialdehyde.UV-C treatment at 9.8 kJ/m^2 could damage plant cells,and weaken the promoting effects on flavonoids,soluble proteins,peroxidase and polyphenol oxidase activities.Compared with 25℃,low temperature treatment at 13℃ could suppress the expansion of lesions,maintain higher content of total phenols and flavonoids,inhibit the formation of malondialdehyde,and delay the peak time of peroxidase and polyphenol oxidase activity.UV-C treatment at 4.9 kJ/m^2 combined with storage at 13℃ had best a control effect on P.mangiferae of mango fruits,and maintained much better quality of postharvest mango fruits effectively.
作者
麦馨允
黄江奇
黄斌
王艺
蓝喜丹
廖芬艳
MAI Xinyun;HUANG Jiangqi;HUANG Bin;WANG Yi;LAN Xidan;LIAO Fenyan(College of Agriculture and Food Engineering,Baise University,Baise,Guangxi 533000,China;Longbang Customs,Jingxi,Guangxi 533800,China)
出处
《热带作物学报》
CSCD
北大核心
2020年第4期764-772,共9页
Chinese Journal of Tropical Crops
基金
广西高校中青年教师基础能力提升项目(No.KY2016LX341,No.KY2016YB415)。
关键词
芒果
短波紫外线
温度
蒂腐病
芒果拟盘多毛孢
mango
ultraviolet-C
temperature
stem-end rot disease
Pestalotiopsis mangiferae
