Crops ›› 2021, Vol. 37 ›› Issue (2): 165-172.doi: 10.16035/j.issn.1001-7283.2021.02.024

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Correlation Analysis of Oat Grain Nutrition and Agronomic Traits

Zhou Yuexia1(), Fan Yu1, Ruan Jingjun1, Yan Jun2, Lai Dili1, Peng Yan1, Tang Yong1, Weng Wenfeng1, Cheng Jianping1()   

  1. 1Wheat Farming Research Center, Guizhou University, Guiyang 520025, Guizhou, China
    2School of Pharmacy and Biological Engineering, Chengdu University, Chengdu 610106, Sichuan, China
  • Received:2020-03-21 Revised:2021-02-06 Online:2021-04-15 Published:2021-04-16
  • Contact: Cheng Jianping E-mail:zhouyuexiagui@hotmail.com;jpcheng@gzu.edu.cn

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Abstract:

In order to further explore and utilize the genes and germplasm resources with high nutrient content of oat grains, 60 cultivated oats introduced by Northwest Agriculture and Forestry University were used as research materials and planted in two environments (Jintang County, Chengdu, Sichuan and Kangding County, Ganzi Prefecture, Sichuan). There were six nutritional indicators, four yield indicators, and seven agronomic traits of grains determined. Through the significant differences, network correlation analysis and principal component analysis of oats in different environments, the nutritional components, and agronomic traits were studied, high-quality genotypes XO-1-6, XO-1-12, XO-1-16, high-yielding genotypes XO-1-16, XO-1-17, XO-1-19 were selected, and the grains nutrition in Jintang County was higher than that of Kangding County, grain yield and agronomic traits were generally lower than that of Kangding County. Nutritional quality was negatively correlated with yield, and it was positively correlated with plant height but negatively correlated with tillers number, indicating that the nutrient composition and yield of oats were not only affected by genetic properties but also by the environment. Seventeen traits could be integrated into five principal components. This thesis will provide research materials for breeding high-quality and high-yield oat resources in this area, laying a theoretical foundation for oat production research, and having important reference significance for genetic improvement of oat quality.

Key words: Oats, Nutritional traits, Agronomic traits, Significant difference analysis, Network correlation, Principal component analysis

Table 1

Average and range of oat grain nutrition and grain traits"

种植地
Planting
area		 统计值
Statistic		 株高(cm)
Plant height
(PH)		 穗长(cm)
Spike length
(SL)		 旗叶长(cm)
Flag leaf
length (FL)		 旗叶宽(cm)
Flag leaf
width (FW)		 总分蘖数
Total tillers
(TT)		 有效分蘖数
Effective
tillers (ET)		 第一节长(cm)
First section
length (FS)		 单株产量(g)
Yield per
plant (YPP)		 籽粒长(cm)
Grain length
(GL)		 籽粒宽(cm)
Grain width
(GW)		 千粒重(g)
1000-grain weight (TGW)
金堂县
Jintang		 均值±标准差
Mean ± SD		 112.48±17.50 28.93±5.88 18.92±3.74 1.31±0.40 15.10±5.95 13.12±5.35 36.78±6.09 2.78±1.62 0.85±0.14 0.27±0.13 26.02±3.65
范围Range 87.10~167.80 18.90~51.80 10.80~28.60 0.60~2.30 6.70~38.00 3.50~35.00 25.3~54.2 1.12~4.94 0.68~0.96 0.22~0.30 14.62~32.33
变异系数
Variable coefficient		 0.16 0.20 0.20 0.31 0.39 0.41 0.17 0.58 0.07 0.05 0.14
康定县
Kangding		 均值±标准差
Mean ± SD		 101.24±21.95 26.29±6.17 18.33±4.13 1.86±0.42 9.70±3.14 9.00±2.83 39.96±8.02 4.11±2.53 0.86±0.64 0.29±0.15 31.24±4.42
范围Range 64.33~162.67 16.67~43.17 9.17~26.67 1.20~3.33 6.00~28.67 5.00~15.33 26.00~72.17 1.69~17.35 0.63~1.03 0.26~0.33 19.88~42.24
变异系数
Variable coefficient		 0.22 0.23 0.23 0.23 0.32 0.31 0.20 0.62 0.07 0.05 0.14

Table 2

Mean value and range of nutritional traits in oat grain"

种植地
Planting area		 统计值
Statistic		 总类黄酮(mg/g)
Total flavonoids (TF)		 总酚(mg/g)
Total phenol (TP)		 植酸(mg/kg)
Phytic acid (PHY)		 无机磷(mg/kg)
Inorganic phosphorus(PI)		 黄色素(mg/kg)
Yellow pigment (YP)		 氨基(mg/kg)
Amino (-NH2)
金堂县Jintang 均值±标准差
Mean ± SD		 152.96±70.20 584.65±163.80 5.96±1.22 7.07±2.32 51.84±26.12 4.19±2.20
范围Range 31.76~312.84 153.04~1239.00 3.42~8.12 2.81~12.53 16.63~162.99 1.29~10.18
变异系数
Variable coefficient		 0.46 0.28 0.21 0.33 0.50 0.52
康定县Kangding 均值±标准差
Mean ± SD		 48.66±19.71 336.40±72.60 2.89±0.82 3.23±1.27 38.15±10.31 5.92±1.61
范围Range 21.34~210.30 196.70~507.70 1.34~4.73 1.34~6.79 3.35~66.85 2.91~10.42
变异系数
Variable coefficient		 0.41 0.20 0.28 0.39 0.27 0.27

Fig.1

Comparison of nutritional traits in oat grains in different environments The values in the figure represent the mean ± standard deviation of three replicates in the two environments, including the ten highest, mean and ten lowest values; different letters indicate significant difference at 0.05 level among different materials"

Fig.2

Correlation network of agronomic traits and nutritional components of oats"

Table 3

Load factor and variance contribution rate of each component factor vector"

成分
Composition		 初始特征值Initial eigenvalue 提取载荷平方和Load square
总计Total 方差百分比Percentage (%) 累积Cumulative(%) 总计Total 方差百分比Percentage (%) 累积Cumulative(%)
A 6.359 37.404 37.404 6.359 37.404 37.404
B 2.164 12.729 50.133 2.164 12.729 50.133
C 1.902 11.187 61.320 1.902 11.187 61.320
D 1.549 9.114 70.434 1.549 9.114 70.434
E 1.074 6.317 76.751 1.074 6.317 76.751
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