Crops ›› 2016, Vol. 32 ›› Issue (2): 83-88.doi: 10.16035/j.issn.1001-7283.2016.02.015

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Relationship between Maize Lodging Resistance and Agronomic Traits,Plant Diseases,and Insect Pests

Wang Liang1,Feng Guang1,Li Yanyan1,Jing Xiqiang1,Huang Changling2   

  1. 1 Dandong Academy of Agricultural Sciences,Fengcheng 118109,Liaoning,China
    2 Institute of Crop Sciences,Chinese Academy of Agricultural Sciences,Beijing 100081,China
  • Received:2015-12-21 Revised:2016-02-23 Online:2016-04-15 Published:2018-08-26
  • Contact: Xiqiang Jing,Changling Huang

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Abstract:

Four maize hybrids including Xianyu 335, Danyu 336, Zhengdan 958 and Dika 516 were chosen as the materials to do experiment designed by three replications and three planting density in this study. The relationship between stem quality, agronomic traits, plant diseases, occurrence of insect pests and the lodging resistance was analyzed. The results showed that ear height, gravity height, stalk rot, Asia maize borer and planting density were significantly positively correlated with lodging resistance at 0.01 level; plant height, inter node length and sheath blight were significantly positively correlated with lodging resistance at 0.05 level; stem pull, puncture strength, fracture strength and stem diameter were significantly negatively correlated at 0.01 level; crush strength and the number of supporting roots were significantly negatively correlated at 0.05 level. Stem quality traits could be directly used to evaluate maize lodging resistance; ear height, center of gravity height and planting density could be indirectly used to evaluate maize lodging resistance. Based on path analysis, the results showed that the plant density, gravity center height, stem diameter and stem pull strength played a leading role in the lodging resistance; the direct path coefficient of density on lodging resistance was the maximum with a value of 0.8366; that of gravity center height on lodging resistance was the second with a value of 0.5490; that of stem diameter and pull strength was greater.

Key words: Maize, Lodging, Agronomic traits, Correlation analysis, Path analysis

Table 1

Difference comparison of maize hybrids under different plant density"

密度
Density
（株/hm2）		 品种
Varieties		 茎秆拉力
Pull strength
(kg)		 穿刺强度
Puncture strength
(kg)		 折断强度
Break strength
(kg)		 压碎强度
Crush strength
(kg)		 茎腐病病级
Rating of
stalk rot		 纹枯病病级
Rating of
sheath blight		 玉米螟病级
Rating of Asia
corn borer		 倒伏
Lodging
rate(%)
45 000 先玉335 3.62 4.44 3.89 6.33 1 1 5 0
丹玉336 3.44 4.38 3.77 5.86 1 1 3 0
郑单958 3.81 5.12 4.02 6.75 1 1 1 0
迪卡516 3.41 4.09 3.56 5.78 1 1 3 0
平均值 3.57 4.51 3.81 6.18 1 1 3 0
60 000 先玉335 2.55 3.79 3.48 5.98 1 3 5 15
丹玉336 2.43 3.18 3.03 5.12 1 3 3 12
郑单958 3.15 4.22 3.34 6.07 1 3 3 0
迪卡516 2.99 4.05 3.15 5.11 1 3 3 0
平均值 2.78 3.81 3.25 5.57 1 3 3.5 6.8
75 000 先玉335 1.78 2.86 2.54 4.27 1 5 5 36
丹玉336 1.54 2.37 2.28 4.19 1 5 5 26
郑单958 2.11 3.31 2.46 4.65 3 5 3 8
迪卡516 1.97 2.65 2.57 4.92 1 5 3 0
平均值 1.85 2.80 2.46 4.51 1.5 5 4 17.5
密度
Density
（株/hm2）		 品种
Varieties		 株高
Plant height
（cm）		 穗位
Ear height
（cm）		 茎粗
Stem diameter
（cm）		 气生根层数
Supporting roots		 重心高度
Center of gravity height
（cm）		 节间长度
Internode length
（cm）
45 000 先玉335 313.5 115.3 2.44 0 117.8 17.7
丹玉336 319.7 121.8 2.51 1 125.5 17.2
郑单958 278.5 107.6 2.37 1 105.9 15.3
迪卡516 282.1 109.2 2.29 0 104.4 16.2
平均值 298.5 113.5 2.40 0.5 113.4 16.6
60 000 先玉335 315.5 118.2 2.33 0 118.2 17.8
丹玉336 324.2 128.4 2.38 1 135.1 18.3
郑单958 278.8 111.5 2.32 0 107.3 15.3
迪卡516 283.6 113.2 2.25 0 106.6 16.2
平均值 300.5 117.8 2.32 0.25 116.8 16.9
75 000 先玉335 317.3 121.5 2.28 0 122.4 18.1
丹玉336 325.8 134.8 2.19 0 139.6 18.4
郑单958 280.2 115.5 2.25 0 110.7 15.6
迪卡516 284.1 114.6 2.17 0 109.3 16.3
平均值 301.9 121.6 2.22 0 120.5 17.1

Table 2

Correlation analysis coefficient of maize main characters with lodging"

性状Trait y x1 x2 x3 x4 x5 x6 x7 x8 x9 x10 x11 x12 x13 x14
y 1
x1 -0.77** 1
x2 -0.64** 0.73** 1
x3 -0.61** 0.64** 0.59** 1
x4 -0.49* 0.74** 0.77** 0.64** 1
x5 0.47* 0.20 0.19 -0.24 -0.31* 1
x6 0.52** -0.59** -0.32* -0.44* -0.51** 0.74** 1
x7 -0.88** 0.71** 0.80** 0.98** 0.89** -0.08 0.21 1
x8 -0.46* 0.41* 0.62** 0.71** 0.68** -0.20 -0.35* 0.43* 1
x9 0.85** -0.79** -0.57** -0.58** -0.62** 0.92** 0.99** -0.45* -0.44* 1
x10 0.34* -0.30* -0.43* -0.63** -0.70** 0.71** 0.90** -0.21 -0.15 0.56** 1
x11 0.51** -0.38* -0.71** -0.88** -0.81** 0.13 0.21 -0.19 -0.22 0.21 0.01 1
x12 0.41* -0.25 -0.86** -0.79** -0.72** 0.28* 0.33* -0.53** -0.31* 0.39* 0.23 0.39* 1
x13 0.58** -0.18 -0.43* -0.57** -0.43* 0.11 0.10 -0.12 -0.14 0.12 0.08 0.23 0.21 1
x14 0.76** -0.92** -0.84** -0.93** -0.87** 0.31* 0.44* -0.85** -0.78** 0.35* 0.43* 0.37* 0.78** 0.46* 1

Table 3

Partial correlation coefficient of lodging resistance index"

性状指标
Characters index		 偏相关系数
Partial correlation coefficient
r(y, x1) 0.088235
r(y, x7) 0.174638
r(y, x9) 0.223547*
r(y, x14) 0.310603**

Table 4

Path analysis of lodging resistance index"

作用因子
Effect factors		 →倒伏性直接通径系数
→Lodging resistance direct path analysis coefficient		 →倒伏性间接通径系数 →Indirect path analysis coefficient
→x1 →x7 →x9 →x14
x1 0.1089 0.1739 -0.1206 -0.1397
x7 0.1493 -0.3302 -0.0688 -0.1124
x9 0.5490 -0.0965 -0.0714 0.1039
x14 0.8366 -0.4377 -0.3173 0.2078
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