Abstract:

The contents of nutrient elements such as P, S, K, Ca, Mn, Fe, Cu, Zn, Rb, and Sr were determined using total
reflection X-ray fluorescence spectrometry (TXRF) in the flesh of Chinese dwarf cherry from ten genotypes and Jing Ou 2
from 5 producing areas. The results indicated that Chinese dwarf cherry was a rich source of elements especially Ca, and
the highest Ca content (441.1 mg/kg fresh fruit ) was found in genotype CH among ten genotypes. A large variability in
nutritional element contents among the examined genotypes was obtained, because of the variation coefficients larger than
30% in S, Fe, Ca, and Sr contents. Principal component analysis was applied to the data matrix to evaluate analytical results.
It was found that P, S, K, Rb, Ca, and Sr might acted as eigenelements for the germplasm resource of Chinese dwarf cherry.
The fruit quality of nutrient elements was also significantly affected by producing area and the highest nutrient element
contents were found in Zhangbei county of Hebei province.

Key words: Chinese dwarf cherry, total reflection X-ray fluorescence, nutrient element, germplasm, producing area