Crops ›› 2018, Vol. 34 ›› Issue (4): 37-41.doi: 10.16035/j.issn.1001-7283.2018.04.007

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Field Identification of Different Broom Corn Millet Varieties Lodging Resistance and Evaluation Index Selection and Analysis

Liang Haiyan,Li Hai,Lin Fengxian,Zhang Xiangyu,Zhang Zhi,Song Xiaoqiang   

  1. Institute of Crops in High Latitude & Cold Climate Area, Shanxi Academy of Agricultural Sciences, Datong 037008, Shanxi, China
  • Received:2018-04-25 Revised:2018-06-12 Online:2018-08-20 Published:2018-08-23

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Abstract:

The lodging resistance of 45 varieties of millet was identified in the field. Among them, 7 varieties with different lodging grades were selected to analyze the relationship between plant agronomy, mechanical properties and lodging grade in the field. The results showed that the lodging grade of 7 varieties including Ningmi 13, Longmi 7, Longmi 8, Yanshu 8 etc. were 0, and they had better lodging resistance. The study on 7 varieties of different lodging grades showed that the correlation coefficient between lodging coefficient and field lodging grade was the largest, which reached the extremely significant level. The mechanical strength of plant, root weight and plant height were the major influencing factors of lodging coefficient. The influence of mechanical strength was the greatest, followed by the root weight.

Key words: Broom corn millet, Lodging resistance, Field identification, Evaluation index

Fig.1

The difference of lodging property of different broom corn millet varieties"

Table 1

Agronomic characters of different broom corn millet varieties"

品种
Variety		 倒伏级别
Lodging level		 基部1~4节平均茎基粗(cm)
Basal 1-4 nodes mean stem diameter		 株高(cm)
Plant height		 穗长(cm)
Spike length		 穗重(g)
Panicle weight		 根重(g)
Root weight		 地上部分鲜重(g)
Above-ground fresh weight
宁糜13号
Ningmi 13		 0 0.94 151.50 33.67 14.25 9.58 73.91
内糜5号
Neimi 5		 1 0.85 117.67 44.17 21.08 7.81 66.15
晋黍5号
Jinshu 5		 2 0.91 143.67 29.60 27.00 8.80 81.74
雁黍11号
Yanshu 11		 2 0.65 174.17 40.17 26.02 10.37 87.45
晋黍8号
Jinshu 8		 3 0.69 135.00 33.00 12.00 4.18 60.44
内糜3号
Neimi 3		 4 0.64 180.17 45.33 21.99 5.23 73.30
晋黍1号
Jinshu 1		 4 0.71 164.17 28.60 15.49 3.91 51.24

Table 2

Mechanical properties of different broom corn millet varieties"

品种
Variety		 倒伏级别
Lodging level		 重心高度(cm)
Gravity center
height		 基部1~4节平均
节间充实度(g/cm)
Basal 1-4 nodes mean
internodes fullness		 抗折力(N)
Breaking
resistance		 机械强度
(N·cm)
Mechanical
strength		 倒伏指数
Lodging
index		 倒伏系数
Lodging coefficient
宁糜13号Ningmi 13 0 69.93 0.51 54.64 342.61 15.09 3.41
内糜5号Neimi 5 1 77.50 0.43 37.17 288.33 17.78 3.46
晋黍5号Jinshu 5 2 51.47 0.49 36.92 328.88 20.44 4.06
雁黍11号Yanshu 11 2 74.97 0.56 46.56 320.69 12.79 4.58
晋黍8号Jinshu 8 3 80.00 0.31 36.75 260.10 18.59 7.50
内糜3号Neimi 3 4 86.67 0.37 33.20 267.91 23.71 9.28
晋黍1号Jinshu 1 4 78.17 0.29 23.76 167.25 23.95 12.87

Table 3

Correlation coefficient between broom corn millet plant agronomy, mechanical properties and lodging level in the field"

株高
Plant
height		 重心高度
Gravity
center height		 基部1~4节平均充实度
Basal 1-4 nodes mean internodes fullness		 基部1~4节平均茎基粗
Basal 1-4 nodes mean stem diamete		 穗长
Spike
length		 穗重
Panicle
weight		 根重
Root
weight		 地上部分鲜重
Above-ground
fresh weight		 抗折力
Breaking
resistance		 机械强度
Mechanical strength		 倒伏指数
Lodging
index		 倒伏系数
Lodging coefficient
倒伏级别
Lodging level		 0.491 0.727 -0.636 -0.709 -0.164 0.018 -0.727 -0.473 -0.927** -0.818* 0.782* 0.982**

Table 4

Path analysis between lodging coefficient and agronomic, mechanical characters of broom corn millet plants"

自变量
Independent variable		 与倒伏系数的
简单相关系数
Simple correlation coefficient with lodging coefficient		 通径系数
(直接作用）
Path coefficient (Direct action)		 间接通径系数Indirect path coefficient 合计（间接作用）
Total (Indirect effects)
机械强度
Mechanical strength		 株高
Plant
height		 根重
Root
weight
机械强度Mechanical strength -0.9240 -0.5600 - -0.0562 -0.3069 -0.3630
株高Plant height 0.4630 0.3720 0.0846 - 0.0071 0.0917
根重Root weight -0.8470 -0.3560 -0.4827 -0.0074 - -0.4902
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