福建农业学报2016，Vol.31Issue(12)：1312-1317,6.DOI:10.19303/j.issn.1008-0384.2016.12.010
西藏高原生态条件下青稞营养成分的分析
Analysis of Nutritional Components of Naked Barley Under the Ecological Condition of Tibet Plateau
摘要
Abstract
Tibet naked barley (Hordeum vulgare Linn.var.nudum Hook.f.)is rich in nutrients,such as starch, lysine,β-glucan and protein,which are closely related to the ecological and climatic conditions unique to the plateau region.Forty-seven samples of the native varieties of naked barley were collected from parts of Tibet for this investigation during 2013 - 201 5. Local conditions at the sampling sites were recorded.A quadratic polynomial stepwise regression analysis indicated that the temperature was crucial in affecting the lysine content in the grains. The starch content increased with the increasing sunshine and accumulated temperature.The interaction between the monthly and daily average temperatures,when they were greater than 0℃,and the sun exposure facilitated the formation ofβ-glucan.On the other hand,when the monthly and daily average temperatures were higher than 10℃and the annual precipitation was abundant,their interaction became detrimental to β-glucan formation.For the protein content,the monthly mean temperature along with sunshine time was found to be beneficial,but not when the altitude was a factor associated with the monthly average temperature or the accumulated temperature.The canonical correlation analysis showed that the combination of altitude,annual precipitation and the accumulated temperature,when the average daily temperature was more than 10℃,were critical on the protein,lysine and β-glucan contents in the naked barley.Whereas,the combination of the accumulated temperature,when the average daily temperature was more than 0℃ or 10℃,and the annual precipitation affected most greatly on the starch and lysine contents in the naked barley.关键词
西藏青稞/生态气候因子/赖氨酸/蛋白质/β-葡聚糖/典型相关分析Key words
tibet naked barley/ecological and climatic factors/lysine/protein/β-glucan/canonical correlation analysis分类
农业科技引用本文复制引用
冯西博..西藏高原生态条件下青稞营养成分的分析[J].福建农业学报,2016,31(12):1312-1317,6.基金项目
西藏自治区重点项目(XZXTCX-03) （XZXTCX-03）
西部提升计划“作物学学科建设”(XBTSZWXK-01) （XBTSZWXK-01）
国家自然科学基金项目(31360300) （31360300）
