Analysis of the content of mineral elements in 'Huangguan' pears of Jizhua disease

Abstract：【Objective】To analyze the relationship between Jizhua disease and mineral nutrition and provide a scientific basis for explaining its physiological mechanism and exploring prevention measures, the content of mineral elements in fruits and normal fruits with different degrees of disease were measured.【Methods】Taking‘Huangguan'pears with different incidence as test materials, inductively coupled plasma atomic emission spectrometry was used to determine the content of K, Ca, Mg, B, Fe, Cu, Zn, Mn and other elements in the same period of harvested Jizhua disease severely diseased fruit, Jizhua disease mildly diseased fruit and normal fruit, and the correlation between the Jizhua disease and mineral elements of‘Huangguan'pear was analyzed.【Results】The results showed that the content of B element in the severe and mild fruit peels was significantly lower than normal fruit.In the flesh, the content of element B in the severely diseased fruit was significantly lower than that in the mildly diseased fruit, and the content in the mildly diseased fruit was significantly lower than that of the normal fruit, and this change is consistent with the degree of disease.However, there is no correlation or poor correlation between the changes of other mineral elements and the degree of disease, and the deficiency characteristics of these elements are different from the incidence of Jizhua disease.【Conclusion】The occurrence of Jizhua disease may be closely related to the low content of B element in fruits.