| 青藏高原青稞品质评价体系构建及生态区划分析 |
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| 引用本文：陈鲁鹏，姚晓华，姚有华，李 新，吴昆仑.青藏高原青稞品质评价体系构建及生态区划分析[J].西北植物学报,2023,43(4):667~678 |
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| 作者 | 单位 | | 陈鲁鹏1,2,3，姚晓华1,2,3，姚有华1,2,3，李 新1,2,3，吴昆仑1,2,3* | (1 青海大学,西宁 810016；2 青海省农林科学院,西宁 810016；3 青海省青稞遗传育种重点实验室/国家麦类改良中心青海青稞分中心 青藏高原种质资源研究与利用实验室,西宁 810016) |
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| 基金项目:国家重点研发计划项目(2019YFD1001701-4)；国家大麦产业技术体系(CARS-05)；青海省自然科学基金计划-创新团队(2022-ZJ-902) |
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| 中文摘要:为探究青藏高原地区青稞(Hordeum vulgare L. var. nudum Hook. f.)品种品质间的差异，建立青稞品质评价指标体系，对青稞品质生态适应性进行区划。该研究以15个青藏高原主栽青稞品种为试验材料，连续两年种植于青藏高原具有代表性的8个生态区，测定了籽粒总淀粉、粗蛋白、粗脂肪、β-葡聚糖等13个品质指标，并利用单因素方差分析、相关性分析、主成分分析和聚类分析方法对被测指标进行分析排序。结果表明：(1)13个品质指标中有11个指标在15个参试品种间存在显著差异，有12个指标在8个种植区间存在显著差异；品质指标总黄酮含量与总多酚含量具有显著正相关关系，与β-葡聚糖含量存在极显著正相关关系；结合不同品种在不同生态区的表现，确定支链淀粉、直链淀粉、总黄酮、β-葡聚糖和总多酚含量为对青稞综合品质影响最大的指标。(2)聚类分析将15个参试品种分成4类，将8个种植地区聚类成3个生态区，各生态区品质表现较好的品种为‘昆仑18号’、‘昆仑19号’、‘昆仑15号’、‘甘青8号’和‘甘青4号’。(3)对所测品质指标在品种水平和地区水平上进行主成分分析发现，将13个品质指标均划分为5个主成分，累计方差贡献率分别为85.16%和94.40%；籽粒品质综合评价得分最高的品种为‘昆仑18号’，品质最优生态地区为青海省贵南县。 |
| 中文关键词:青稞 品质指标 品质评价 生态区划 |
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| Construction of Quality Evaluation System and Analysis of Ecological Regionalization of Qinghai-Tibet Plateau Hulless Barley |
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| Abstract:In order to explore the differences in the quality of hulless barley (Hordeum vulgare L. var. nudum Hook.f.) varieties in the Qinghai-Tibet Plateau, establish the quality evaluation index system of hulless barley, and regionalize the ecological adaptability of hulless barley quality, we used 15 main hulless barley varieties in the Qinghai-Tibet Plateau as experimental materials and measured thirteen quality indexes such as total starch, crude protein, ether extract and β-glucan. One-way analysis of variance, correlation analysis, principal component analysis and cluster analysis were used to analyze the measured indexes. The results showed that: (1) among the 13 quality indexes, 11 indexes had significant differences among the 15 tested varieties, and 12 indexes had significant differences in the 8 planting zones. There was a significant positive correlation between the total flavonoid content and the total polyphenol content, and the β-glucan content. Based on the performance of different varieties in different ecological regions, the contents of amylopectin, amylose, total flavonoids, β-glucan and total polyphenols were the greatest influence on the comprehensive quality of hulless barley. (2) The 15 tested varieties were divided into 4 categories by cluster analysis, and the 8 regions were divided into 3 ecological zones. The varieties with better quality in each ecological zone were Kunlun 18, Kunlun 19, Kunlun 15, Ganqing 8 and Ganqing 4. (3) These results showed that 13 indicators could be converted into 5 principal components, and the cumulative variance contribution rates were 85.16% and 94.40%, respectively. The variety with the highest comprehensive evaluation score was Kunlun 18, and the area with the best quality was Guinan, Qinghai province. |
| keywords:hulless barley quality index quality evaluation ecological regionalization |
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