Crops ›› 2020, Vol. 36 ›› Issue (4): 121-126.doi: 10.16035/j.issn.1001-7283.2020.04.017

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Correlation Analysis of Fiber Yield and Yield Components in Five Industrial Hemp Varieties (Lines)

Zhang Xiaoyan(), Wang Xiaonan, Cao Kun, Sun Yufeng()   

  1. Daqing Branch of Heilongjiang Academy of Sciences, Daqing 163319, Heilongjiang, China
  • Received:2019-12-13 Revised:2020-04-05 Online:2020-08-15 Published:2020-08-11
  • Contact: Sun Yufeng E-mail:zhangxylibin@163.com;sunyf888@163.com

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Abstract:

Five industrial hemp varieties (lines) were used as research objectives. The correlation and path analysis were carried out between fiber yield and yield components, and the changes occurred in relation to fiber yield and yield components were also analyzed. The results showed that there were significant differences in the fiber yield per plant and the yield components among industrial hemp varieties (lines). Stem weight per plant was extremely significantly correlated with fiber yield per plant. The stem diameter, dry stem weight per plant and total fiber rate were significantly correlated with fiber yield per plant. The order of correlation coefficients was stem weight per plant (0.962) > total fiber rate (0.943) > stem diameter (0.917) > dry stem weight per plant (0.912) > plant height (0.808) > pull rate of dry stem (0.725). The regression equation of fiber yield per plant with stem weight per plant, dry stem weight per plant, total fiber rate, plant height and pull rate of dry stem reached significant level, and path analysis showed that the most direct contribution to the fiber yield was the stem weight per plant followed by the total fiber rate, but the effects of plant height, dry stem weight per plant and pull rate of dry stem on fiber yield per plant were mainly caused by the indirect effects of stem weight per plant and total fiber rate.

Key words: Industrial hemp, Variety (Line), Fiber yield, Yield components, Correlation analysis, Path analysis

Fig.1

Fiber yields per plant of different industrial hemp varieties (lines) Different lowercase letters indicate significant difference (P < 0.05)"

Table 1

Changes of fiber yield components in industrial hemp varieties (lines)"

品种（系）
Variety (Line)		 株高
Plant height
(cm)		 茎粗
Stem diameter
(cm)		 单株原茎重
Stem weight
per plant (g)		 单株干茎重
Dry stem weight
per plant (g)		 干茎制成率
Pull rate of
dry stem (%)		 全麻率
Rate of total
fiber (%)
火麻一号Huoma 1 216.50b 0.79c 19.11c 15.69d 82.12a 16.35c
汉麻1号Hanma 1 234.58a 0.95a 23.34a 20.46a 87.68a 21.40a
汉麻2号Hanma 2 221.57b 0.82bc 19.84bc 16.73cd 84.34a 19.12ab
汉麻5号Hanma 5 228.98a 0.90ab 21.35ab 18.87b 88.37a 17.34bc
品系3 Line 3 218.55b 0.85abc 20.98bc 18.15bc 86.52a 19.74a
变异系数Coefficient of variation (%) 3.374 6.495 7.739 10.319 2.989 10.604

Table 2

Correlation analysis of fiber yield per plant and yield components in industrial hemp varieties (lines)"

指标
Index		 株高
Plant
height		 茎粗
Stem
diameter		 单株原茎重
Stem weight
per plant		 单株干茎重
Dry stem weight
per plant		 干茎制成率
Pull rate of
dry stem		 全麻率
Rate of
total fiber		 单株纤维产量
Fiber yield
per plant
株高Plant height 1
茎粗Stem diameter 0.936* 1
单株原茎重Stem weight per plant 0.903* 0.983** 1
单株干茎重Dry stem weight per plant 0.906* 0.960** 0.975** 1
干茎制成率Pull rate of dry stem 0.586 0.772 0.717 0.604 1
全麻率Rate of total fiber 0.626 0.736 0.820 0.757 0.592 1
单株纤维产量Fiber yield per plant 0.808 0.917* 0.962** 0.912* 0.725 0.943* 1

Table 3

Normal test output"

因变量
Dependent
variable		 Kolmogorov-Smirnova Shapiro-Wilk
统计量
Statistic		 自由度
df		 Sig. 统计量
Statistic		 自由度
df		 Sig.
单株纤维产量
Fiber yield
per plant (y)		 0.102 15 0.200* 0.991 15 0.998

Table 4

Output results of regression equation model"

模型
Model		 相关系数
Correlation
coefficient		 决定系数
Coefficient of
determination		 调整系数
Coefficient
of adjust		 标准估计误差
Error of standard
estimation
1 0.962a 0.925 0.920 0.21074
2 0.999b 0.998 0.997 0.03813
3 1.000c 1.000 1.000 0.00569
4 1.000d 1.000 1.000 0.00316
5 1.000e 1.000 1.000 0.00102

Table 5

Multivariate standard regression analysis of fiber yield per plant and yield components in industrial hemp varieties (lines)"

模型
Model		 非标准化回归系数
Non-standardized regression coefficient		 标准回归系数
Standard regression
coefficient		 t Sig.
B 标准误差Standard error
1 常量Constant -5.080 0.067 - -7.580 0.201
单株原茎重Stem weight per plant 0.405 0.032 0.962 12.694 0.005**
2 常量Constant -4.801 0.123 - -39.132 0.033
单株原茎重Stem weight per plant 0.243 0.010 0.576 23.952 0.001**
全麻率Rate of total fiber 0.166 0.008 0.470 19.531 0.107
3 常量Constant -4.915 0.019 - -260.394 0.102
单株原茎重Stem weight per plant 0.223 0.002 0.529 127.912 0.013*
全麻率Rate of total fiber 0.166 0.001 0.469 131.282 0.032*
干茎制成率Pull rate of dry stem 0.632 0.027 0.068 23.091 0.131
4 常量Constant -4.699 0.044 - -106.901 0.041
单株原茎重Stem weight per plant 0.231 0.002 0.548 121.110 0.009**
全麻率Rate of total fiber 0.164 0.001 0.464 205.930 0.006**
干茎制成率Pull rate of dry stem 0.614 0.016 0.066 39.333 0.246
株高Plant height -0.002 0.014 -0.015 -5.061 0.024*
5 常量Constant -4.676 0.032 - -17 142 430.850 0.000
单株原茎重Stem weight per plant 0.219 0.001 0.520 8 429 152.609 0.003**
全麻率Rate of total fiber 0.165 0.001 0.467 31 115 942.350 0.000**
干茎制成率Pull rate of dry stem 0.656 0.010 0.070 5 206 773.594 0.332
株高Plant height -0.001 0.012 -0.015 -813 466.695 0.036*
单株干茎重Dry stem weight per plant 0.349 0.026 0.023 516 058.165 0.045*

Table 6

Path analysis of fiber yield per plant and yield components in industrial hemp varieties (lines)"

产量构成因素
Yield component		 直接通径系数
Direct path coefficient		 间接通径系数Indirect path coefficient 合计
Total
X1 X2 X3 X4 X5
X1 -0.015 - 0.4696 0.0208 0.0410 0.2923 0.8237
X2 0.520 -0.0135 - 0.0224 0.0502 0.3829 0.4420
X3 0.023 -0.0136 0.5070 - 0.0423 0.3535 0.8892
X4 0.070 -0.0088 0.3728 0.0139 - 0.2765 0.6544
X5 0.467 -0.0094 0.4624 0.0174 0.0414 - 0.5118
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