采后伽师瓜和86-1甜瓜果实抗链格孢菌侵染研究

Infection of Alternariaalternatain postharvest Jiashi melon and 86-1 melon

以伽师瓜和86-1甜瓜为试材,通过损伤接种链格孢菌的方法,从甜瓜果实病斑直径、病程相关蛋白活性及保护酶活性三方面比较了二者之间的差异。结果表明,伽师瓜的病斑直径小于86-1甜瓜的,果皮病斑直径小于果肉。整个贮藏期间,接种链格孢菌后伽师瓜和86-1 2种甜瓜的病程相关蛋白活性和保护酶活性得到提高,在抵御链格孢菌侵染的过程中起到了重要作用。尤其在侵染中后期作用显著,且伽师瓜接种果皮和果肉活性均高于86-1甜瓜。

Jiash melon and 86-1melon were used as experiment material in this paper.After inoculated with Alternaria alternata by injury,the differences between the two were compared in terms of lesion diameter,pathogen-induced plant protein and protective enzyme activity.The results showed that the lesions of Jiashi melon were less than 86-1,and the diameter of the pericarp was smaller than the sarcocarp.After inoculated with Alternaria alternata, pathogeninduced plant protein and protective enzyme activity of two melons were increased during whole storage period.It played an important role in resisting the infection of Alternaria alternata,especially in the middle and late stages of infection.The activity of inoculated pericarp and sarcocarp in Jiashi melon was higher than 86-1melon.