National Research and Development Institute for Cryogenics and Isotopic Technologies-ICSI Rm. Valcea, ICSI Analytics Group, 4 Uzinei Street, RO-240050 Râmnicu Vâlcea, Romania.
University of Craiova, Faculty of Horticulture, Department of Horticulture and Food Science, 13 Al. I. Cuza Street, RO-200585 Craiova, Romania.
Molecules. 2019 Apr 8;24(7):1378. doi: 10.3390/molecules24071378.
：The aim of the study was to investigate the differences between walnut genotypes of various geographical and genetic origins grown under the same or different environmental conditions. The biological material analyzed consisted in walnut kernels of 34 cultivars, nine advanced selections, and six hybrids harvested in 2015 and 2016, summing up to a total of 64 samples. The walnuts, walnut oil, and residue were characterized in respect to their chemical (proximate composition-fat, protein, nutritional value, fatty acids profile by ¹H-NMR) and carbon-13 isotopic composition. The data was used to statistically discriminate the cultivars according to composition, geographical area of origin, and year of harvest, comparing the Romanian cultivars, selections, and hybrids with the internationally available ones.
：本研究旨在调查在相同或不同环境条件下生长的不同地理和遗传起源的核桃基因型之间的差异。分析的生物材料由 2015 年和 2016 年收获的 34 个品种、9 个高级选种和 6 个杂交种的核桃仁组成，共计 64 个样本。对核桃、核桃油和残渣的化学性质（组成-脂肪、蛋白质、营养价值、¹H-NMR 法脂肪酸图谱）和碳-13 同位素组成进行了分析。利用这些数据，根据组成、地理起源地区和收获年份，对品种进行了统计区分，并将罗马尼亚品种、选种和杂交种与国际上现有的品种进行了比较。
