Crops ›› 2019, Vol. 35 ›› Issue (4): 55-60.doi: 10.16035/j.issn.1001-7283.2019.04.009

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Comprehensive Evaluation of Quality of Nine Tibetan Barley Landlaces by Factor Analysis

Jin Yulong,Bai Ting,Zhu Mingxia,Liu Xiaojiao,Wang Shanshan,Zhang Zhiwei,Hu Yun,Zhang Yuhong   

  1. Institute of Agricultural Products Development and Food Science,Tibet Academy of Agricultural and Animal Husbandry Sciences, Lhasa 850000, Tibet, China
  • Received:2018-12-18 Revised:2019-06-11 Online:2019-08-15 Published:2019-08-06
  • Contact: Yuhong Zhang

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Abstract:

With the rising of highland barley processing industry, it is contributive to cultivate highland barley varieties suitable for processing by screening high quality germplasm of Tibetan resources. Zangqing 25 was used as the control, 31 quality traits of 9 Tibetan barley rarieties were comprehensively evaluated to determine the quality. The results indicated that 6 common factors with an eigenvalue greater than 1 were extracted, cumulatively contributing to 94.65% of the total variance. The first principal component including protein, threonine, proline, alanine, valine, leucine, phenylalanine, histidine, lysine, albumin, and total content of amino acids contents was 49.81%. The contribution rate of the second common factor including fat, amylose, dietary fiber, γ-VE, P contents was 13.85%. On the basis of the model of comprehensive evaluation, the score consequence is: Zangqing25>Qing21>Longzihei>Lhasa changhei>Liangamu>Lhasa duanbai>Pengnaigabu>Jiangre’ejiu>Zhikonggaxia>Lianmubaike.

Key words: Barley, Native variety, Nutritional quality, Factor analysis, Comprehensive evaluation

Table 1

Nutrition content of native barley variety in Tibet"

指标
Index		 平均值
Mean		 标准差
Standard
deviation		 变异系数(%)
Variable
coefficient		 指标
Index		 平均值
Mean		 标准差
Standard
deviation		 变异系数(%)
Variable
coefficient
水分Water (%) 10.91 0.18 1.62 苏氨酸THR (%) 0.38 0.08 19.91
粗脂肪Fat (%) 1.61 0.22 13.81 脯氨酸PRO (%) 1.10 0.26 23.58
蛋白质Protein (%) 10.18 1.08 10.56 丙氨酸ALA (%) 0.33 0.05 16.36
直链淀粉Amylose (%) 20.64 0.67 3.23 缬氨酸VAL (%) 0.25 0.04 15.26
支链淀粉Amylopectin (%) 30.94 2.65 8.55 亮氨酸LEU (%) 0.31 0.06 18.13
不可溶性膳食纤维
Insoluble dietary fiber (%)		 15.52 1.62 10.46 苯丙氨酸PHE (%) 0.91 0.25 27.10
可溶性膳食纤维
Soluble dietary fiber (%)		 3.76 1.05 27.92 组氨酸HIS (%) 0.12 0.04 31.34
γ-VE(mg/100g) 0.10 0.06 66.69 赖氨酸LYS (%) 0.42 0.08 19.21
维生素B2 VB2(mg/100g) 0.47 0.05 10.05 蛋氨酸MET (%) 0.08 0.02 30.15
Al (mg/kg) 60.41 59.00 97.66 异亮氨酸ILE (%) 0.18 0.03 15.85
Ca (mg/kg) 1 257.15 275.76 21.94 酪氨酸TYR (%) 0.12 0.04 30.62
Fe (mg/kg) 80.36 21.24 26.43 γ-氨基丁酸GABA (%) 0.02 0.00 14.72
Mg (mg/kg) 1 772.94 302.64 17.07 氨基酸总量Total amino acid (%) 7.83 1.63 20.82
P (mg/kg) 4 218.26 586.28 13.90 清蛋白Albumin (%) 1.70 0.67 39.35
S (mg/kg) 737.17 83.63 11.35 球蛋白Globulin (%) 1.42 0.44 31.19
Sr (mg/kg) 2.58 1.02 39.41

Table 2

Correlation analysis of nutrition contents about native barley varieties of Tibet"

指标
Index		 粗脂肪
Fat		 蛋白质
Protein		 直链淀粉
Amylose		 支链淀粉
Amylopectin		 不可溶性
膳食纤维
Insoluble
dietary fiber
 可溶性
膳食纤维
Soluble
dietary fiber		 γ-VE VB2 Al Ca Fe Mg P S Sr GABA 总氨基酸
Total
amino
acid		 清蛋白
Albumin		 球蛋白Globulin
粗脂肪Fat --1
蛋白质Protein -0.209 -1
直链淀粉Amylose -0.528 -0.641* -1
支链淀粉Amylopectin -0.469 -0.721** -0.954** -1
不可溶性膳食纤维
Insoluble dietary fiber		 -0.140 -0.745** -0.869** -0.834** -1
可溶性膳食纤维
Soluble dietary fiber		 -0.991** -0.228 -0.530 -0.461 -0.144 -1
γ-VE -0.992** -0.118 -0.618* -0.563* -0.256 -0.985** -1
VB2 -0.996** -0.159 -0.584* -0.529 -0.216 -0.989** -0.999** -1
Al -0.230 -0.082 -0.150 -0.049 -0.020 -0.190 -0.199 -0.190 -1
Ca -0.610* -0.557* -0.835** -0.838** -0.640* -0.586* -0.663* -0.635* -0.287 -1
Fe -0.387 -0.367 -0.745** -0.720** -0.767** -0.426 -0.483 -0.461 -0.395 -0.530 -1
Mg -0.599* -0.441 -0.903** -0.883** -0.765** -0.621* -0.683* -0.658* -0.013 -0.693** -0.798** -1
P -0.619* -0.495 -0.946** -0.886** -0.769** -0.649* -0.692** -0.665* -0.219 -0.801** -0.714** -0.917** -1
S -0.604* -0.516 -0.952** -0.921** -0.820** -0.626* -0.691** -0.663* -0.025 -0.821** -0.861** -0.912** -0.953** -1
Sr -0.992** -0.150 -0.581* -0.536 -0.209 -0.979** -0.996** -0.997** -0.197 -0.625* -0.434 -0.662* -0.650* -0.644* 1
GABA -0.992** -0.118 -0.617* -0562* -0.255 -0.985** -1.000** -0.999** -0.199 -0.662* -0.483 -0.683* -0.692** -0.691** 0.995** 1
总氨基酸
Total amino acid		 -0.887** -0.562* -0.236 -0.150 -0.106 -0.910** -0.860** -0.879** -0.012 -0.215 -0.311 -0.410 -0.379 -0.370 0.869** 0.861** 1
清蛋白Albumin -0.993** -0.152 -0.599* -0.539 -0.228 -0.991** -0.998** -0.999** -0.185 -0.626* -0.474 -0.678* -0.683* -0.674* 0.995** 0.998** 0.883** 1
球蛋白Globulin -0.996** -0.138 -0.592* -0.535 -0.217 -0.986** -0.998** -0.998** -0.225 -0.650* -0.441 -0.655* -0.668* -0.660* 0.997** 0.998** 0.862** 0.997** 1

Table 3

Factor loading matrix, eigenvalue and cumulative contribution rate of quality factors of native barley varieties of Tibet"

指标Index 主成分Principal component
1 2 3 4 5 6
水分含量Water content -0.60 0.01 0.70 -0.03 -0.09 -0.15
粗脂肪含量Fat content -0.59 0.73 -0.15 -0.06 -0.03 0.23
蛋白质含量Protein content 0.82 -0.13 -0.32 0.43 -0.09 0.02
直链淀粉含量Amylose content -0.42 -0.68 0.52 -0.21 -0.08 0.10
支链淀粉含量Amylopectin content 0.26 0.23 -0.78 0.40 -0.01 -0.04
不可溶性膳食纤维含量Insoluble dietary fiber content -0.35 0.60 0.45 -0.16 0.23 0.40
可溶性膳食纤维含量Soluble dietary fiber content 0.51 0.58 -0.22 -0.42 -0.28 0.25
γ-VE含量γ-VE content -0.30 -0.67 -0.27 0.46 -0.32 0.13
VB2含量VB2 content 0.56 0.10 0.52 0.09 -0.18 0.46
Al含量Al content -0.52 0.48 -0.44 0.02 0.11 -0.44
Ca含量Ca content 0.79 0.07 0.28 0.31 0.25 -0.36
Fe含量Fe content -0.67 0.57 0.02 0.23 0.16 -0.07
Mg含量Mg content -0.54 0.02 -0.36 -0.06 0.57 0.39
P含量P content -0.41 -0.53 0.26 0.45 0.38 0.23
S含量S content -0.58 0.25 0.18 0.69 0.20 -0.06
Sr含量Sr content -0.24 0.05 0.72 0.59 0.08 -0.19
THR含量THR content 0.97 0.05 0.12 0.09 0.11 0.09
PRO含量PRO content 0.98 -0.09 -0.06 0.14 -0.04 0.01
ALA含量ALA content 0.98 0.10 0.11 -0.01 0.02 -0.03
VAL含量VAL content 0.99 0.03 0.02 0.09 -0.08 -0.04
LEU含量LEU content 0.99 0.02 0.05 0.10 -0.05 0.01
PHE含量PHE content 0.85 0.41 0.23 0.09 0.18 0.12
HIS含量HIS content 0.91 0.14 0.16 0.00 0.12 0.12
LYS含量LYS content 0.94 -0.07 0.02 -0.14 0.05 -0.10
MET含量MET content -0.20 0.00 -0.35 0.77 -0.27 0.40
ILE含量ILE content 0.98 -0.06 0.00 0.06 -0.10 -0.06
TYR含量TYR content 0.71 -0.04 -0.21 0.00 0.65 0.07
GABA含量GABA content 0.26 -0.57 -0.20 -0.25 0.65 0.00
总氨基酸含量Total amino acid content 0.99 0.06 0.03 0.13 0.06 0.04
清蛋白含量Albumin content 0.74 0.56 0.30 0.12 -0.06 -0.06
球蛋白含量Globulin content -0.68 0.55 0.06 0.22 0.17 -0.11
特征值Eigenvalue 15.44 4.29 3.51 2.80 1.95 1.35
贡献率Rate of contribution (%) 49.81 13.85 11.33 9.03 6.28 4.35
累积贡献率Accumulating contribution rate (%) 49.81 63.66 74.99 84.02 90.30 94.65

Table 4

Comprehensive evaluation of nutritional quality of native barley varieties by factor analysis"

品种Variety F1 F2 F3 F4 F5 F6 综合分值Comprehensive score 排序Order
直孔嘎夏Zhikonggaxia -0.58 0.13 0.17 -0.31 -0.51 -1.42 -0.407 9
江热俄久Jiangre’ejiu -0.57 -0.03 0.91 -1.18 -0.80 0.21 -0.362 8
彭乃嘎布Pengnaigabu -0.50 1.07 -1.37 1.58 -0.40 -0.98 -0.189 7
联嘎木Liangamu -0.53 0.37 -0.74 0.00 0.43 2.01 -0.184 5
联木白稞Lianmubaike -0.88 0.21 -0.99 -1.65 0.86 -0.17 -0.665 10
青21 Qing21 0.42 -0.59 0.99 0.07 1.66 -1.08 0.319 2
隆子黑Longzihei -0.47 0.97 1.83 1.08 0.15 0.74 0.270 3
拉萨长黑Lhasa changhei 0.35 -1.90 -0.58 0.92 0.71 0.42 -0.007 4
拉萨短白Lhssa duanbai 0.23 -1.28 0.05 0.03 -1.93 0.13 -0.188 6
藏青25（对照）Zangqing25 2.54 1.05 -0.27 -0.53 -0.16 0.13 1.413 1
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