库尔勒香梨黑头病发病后矿物质及活性氧代谢变化研究

The active oxygen metabolism and mineral of Korla fragrant pear after the blackhead disease

库尔勒香梨是新疆名优农产品,在其采后贮藏的期间易发多种病害。黑头病是近年所发现在采后期间对香梨威胁较大的一种病害,通过将黑头病致病菌接种在健康香梨上,贮藏在不同条件下,测量其发病后超氧化物歧化酶(SOD)、过氧化物酶(POD)、过氧化氢酶(CAT)的活性以及超氧阴离子(O_2^-)的产生速率、丙二醛(MDA)含量,以及比较发病前后香梨矿物质元素含量变化。得出结论:香梨黑头病的发病加剧了其活性氧代谢程度,使有害物质迅速积累,同时香梨的矿物质元素含量下降。

Korla pear is Xinjiang famous agricultural products, in its post-harvest storage period prone to a variety of diseases. Blackhead disease is a disease that has been discovered in recent years for a greater threat to pear during postharvest period, and is stored under different conditions by inoculating blackhead pathogens on healthy pear. The activities of superoxide dismutase（SOD）, peroxidase（POD）, catalase（CAT） and the production rate of superoxide anion（O_2^-）, malondialdehyde（MDA） and compare the changes in the content of mineral elements in the pear before and after the onset. The incidence of blackhead disease of pearls increased the level of active oxygen metabolism to the rapid accumulation of harmful substances, while the content of mineral elements in pear decreased.