Properties of carbonized wheat kernels from the late Neolithic site of Donghuishan, Gansu Province, China

文献类型： 外文期刊

第一作者： Wei, Yimin

作者： Wei, Yimin;Guo, Boli;Ren, Mankuan

作者机构：

关键词： C-14 isotope dating; Carbonized wheat kernel (Triticum aestivum); kernel properties; ruins of Donghuishan

期刊名称：CEREAL CHEMISTRY （ 影响因子：1.984； 五年影响因子：2.043 ）

ISSN： 0009-0352

年卷期： 2019 年 96 卷 4 期

页码：

收录情况： SCI

摘要： Background and objectives The Dongshuishan ruins in Minle, Gansu, is a site of the late Neolithic (Siba culture) with crop cultivation history. A total of 105 carbonized wheat kernels (Triticum aestivum) were found at the ruins. The properties of carbonized kernels were analyzed and then compared with modern wheat kernels. Findings The single kernel weight of carbonized kernel was 9.52 mg on average, and the length and width of a kernel were 4.62 and 3.26 mm on average, respectively. The ratio of kernel width to length was 0.71 on average. The kernel length was shorter than that of modern wheat variety, but with a similar kernel width. The carbonized kernels were higher in N-15 isotope content and high in the major minerals zinc (Zn), copper (Cu), lead (Pb), and strontium (Si). The carbonized kernels have existed since 3,463-3,361 cal BP. Conclusions It is estimated that the single kernel weight from Donghuishan was 45-47% of that of the modern wheat. Studying the properties of carbonized wheat affords us a significant reference that merits attention in the progress of improving and evolving varieties in the last hundred years in China. Significance and novelty Ascertaining the cultivation years of wheat in Donghuishan and analyzing the spread of wheat from West Asia to East Asia provided historic evidence for how the wheat spread from Donghuishan to middle China since 4,000 years ago.

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