关键词: 黑果枸杞, 盐分梯度, 微量元素, 氨基酸, 品质评价

Abstract: To reveal the effect of different salinization gradient on the quality of Lycium ruthenicum, the grey multi-dimensional comprehensive membership function was used to evaluate the natural active substances, trace elements and amino acids differences between different salinized soil cultivation types (T1, 0.11%~0.20%, T2, 0.72%~098% and T3, 1.10%~2.20%) and wild types (T4, 0.96%) of L. ruthenicum. The results showed that the highest contents of reducing sugar and transformed sugar in T2 were 317.8 g·kg-1 and 309.5  g·kg-1, which were 1.55 and 1.59 times higher than those of T4, respectively. The total contents of Mn, Zn and free amino acids in cultivated fruits at T1 were the highest, which were 9.55 mg·kg-1, 23.70 mg·kg-1 and 9.61 mg·kg-1, respectively, and 1.39, 3.27, 2.38 times higher than those of T4. Grey multidimensional comprehensive membership evaluation method showed that the highest score of fruit quality was 1.47 under T2 treatment, while the wild type T4 was 1.03. To sum up, the optimization of salinized soil components could enhance the degree of nutrient accumulation of L. ruthenicum. The results provided a reference for revealing the mechanism of the interaction between the two systems and the metabolic pathway of halophytes.

Key words: Lycium ruthenicum Murr, salinity gradient, microelements, amino acids, quality evaluation