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作者	单位
吴雪莲，曲航，邱城，余耀斌，彭杨勤，郝治华，张唐伟，拉琼	（1.西藏自治区农牧科学院农业质量标准与检测研究所，西藏拉萨 850032； 2.西藏自治区农牧科学院，西藏拉萨 850002； 3.辽宁省农业科学院植物营养与环境资源研究所，辽宁沈阳 110161）

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中文摘要:

为了明确产地和品种对西藏青稞营养品质的影响，对采自西藏6个地（市）、26个县的7个普通青稞品种和3个有色青稞品种（257份样品）的5个品质指标和8种矿质元素含量进行了分析。结果表明，（1）产地生态条件是影响青稞品质和矿质元素含量的首要因素，产地对普通青稞的10个被测指标有显著影响；品种对普通青稞的5种被测指标有显著影响；产地和品种的交互作用显著影响5个被测矿质元素含量；产地显著影响有色青稞的黄酮、粗蛋白和磷含量。（2）青稞不同品质指标和矿质元素含量变异程度不同，变异系数最高为52.3%。供试青稞粗淀粉含量为46.64%~53.76%，粗蛋白含量为6.51%~14.21%，粗纤维含量为1.66%~3.4%，β-葡聚糖含量为3.63%~5.13%，黄酮含量为0.18%~0.40%；钾含量为4 224.8~7 646.5 mg·kg^-1，磷含量为2 243.1~6 288.7 mg·kg^-1，镁含量为731.6~1 572.0 mg·kg^-1，钙含量为246.4~789.0 mg·kg^-1，铁含量为27.59~173.99 mg·kg^-1，锌含量为17.56~85.22 mg·kg^-1，锰含量为10.42~22.23 mg·kg^-1，铜含量为2.12~11.84 mg·kg^-1。（3）有色青稞的粗淀粉和黄酮含量显著高于普通青稞，而粗蛋白和粗纤维含量显著低于普通青稞，β-葡聚糖含量二者间无显著差异。

英文摘要:

In order to clarify the effects of location and variety on the nutritional quality of hulless barley in Tibet, thirteen quality traits and mineral element content were analyzed among 7 conventional hulless barley varieties and 3 colored hulless barley varieties, which were collected from six regions and 26 counties of Tibet. The results showed that: the effects of locality, as the major factor, were responsible for ten parameters, and differences among the hulless barley varieties were examined in five parameters, and the location × variety interactions were noted in contents of five mineral elements. Overall, there were large spatial variations among quality traits and mineral element contents of Tibetan hulless barley, and maximum coefficient of variation was 52.3%. Moreover, the result showed a wide range of nutritional quality contents of the conventional hulless barley and colored hulless barley varieties, with 46.64% to 53.76% for starch, 6.51% to 14.21% for protein, 1.66% to 3.4% for fiber, 3.63% to 5.13% for β-glucan, 0.18% to 0.40% for flavone, 4 224.8 to 7 646.5 mg·kg^-1 for K, 2 243.1 to 6 288.7 mg·kg^-1 for P, 731.6 to 1 572.0 mg·kg^-1 for Mg, 246.4 to 789.0 mg·kg^-1 for Ca, 27.59 to 173.99 mg·kg^-1 for Fe, 17.56 to 85.22 mg·kg^-1 for Zn, 10.42 to 22.23 mg·kg^-1 for Mn, and 2.12 to 11.84 mg·kg^-1 for Cu. The content of starch and flavone of the colored hulless barley varieties were significantly higher than those of the conventional hulless barley, while the protein and fiber contents were significantly lower than those of the conventional hulless barley, but no significant difference was observed in the β-glucan content between the conventional hulless barley and the colored hulless barley.

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