Huang Haijiao, Gao Xiaoli, Li Yang, Tian Pengjia, Nima Yangzong, Laba Zhaxi, Ci Zhen, Wei Xinhong, Qu Ji, Guan Weixing, Liao Wenhua
Tibet Academy of Agricultural and Animal Husbandry Sciences, Lhasa 850000, China.
Bioinformation. 2020 Apr 30;16(4):314-322. doi: 10.6026/97320630016314. eCollection 2020.
Barley (Hordeum vulgare L.) is an important agricultural crop. Various studies on the genetic diversity, biochemical and molecular attributes on this species are known. However, information on nutritional variability in a large panel of barley cultivars is limited. Therefore, it is of interest for a quantitative analysis of vitamins, amino acids and dietary fibers in 245 barley of Tibet region in China. The coefficient of variation analysis revealed strong variation of vitamins (VB1>VB2>VE), essential amino acids (valine, histidine, methionine, lysine), non-essential amino acids (proline, tyrosine, cysteine), dietary fibers, (cellulose > lignin). Principal component analysis detected three clusters of cultivars, each with specific characteristics. However, the most nutritional cultivars were found in Cluster 3, which encompassed 52 cultivars. Distinctly, six cultivars (ZQ2000, BJX230, BJX229, BJX249, BJX191 and BJX265) were identified with highest nutritional values. This study reveals a large nutritional diversity in barley cultivars from Tibet and represents an important reference for the exploitation of these germplasm in crop improvement and breeding programmes.
大麦（Hordeum vulgare L.）是一种重要的农作物。关于该物种的遗传多样性、生化和分子特性已有多项研究。然而，关于大量大麦品种营养变异性的信息有限。因此，对中国西藏地区245份大麦中的维生素、氨基酸和膳食纤维进行定量分析很有意义。变异系数分析显示维生素（VB1>VB2>VE）、必需氨基酸（缬氨酸、组氨酸、蛋氨酸、赖氨酸）、非必需氨基酸（脯氨酸、酪氨酸、半胱氨酸）、膳食纤维（纤维素>木质素）存在显著变异。主成分分析检测到三个品种聚类，每个聚类都有特定特征。然而，营养最丰富的品种出现在聚类3中，该聚类包含52个品种。明显地，鉴定出六个营养值最高的品种（ZQ2000、BJX230、BJX229、BJX249、BJX191和BJX265）。本研究揭示了西藏大麦品种丰富的营养多样性，为这些种质在作物改良和育种计划中的开发利用提供了重要参考。
