Crops ›› 2018, Vol. 34 ›› Issue (3): 180-184.doi: 10.16035/j.issn.1001-7283.2018.03.028

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Effects of Seed Weight Difference on the Evenness of Related Germination Indexes in Maize

Yang Jingjing1,Chen Jianglu1,Xie Ruizhi2,Zhang Xiaowei1,Ding Bianhong1,Wu Xinming1,Li Shaokun2,Li Dongfang1   

  1. 1 Sixth Division of Agricultural Science Research Institute of Xinjiang, Wujiaqu 831301, Xinjiang, China
    2 Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
  • Received:2017-12-24 Revised:2018-03-01 Online:2018-06-20 Published:2018-06-20

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Abstract:

The seeds of 12 maize varieties purchased at the seed market of Wujiaqu in Xinjiang Province were investigated. The results showed that most of the seeds of maize varieties reached the national standard in terms of cleanliness, moisture content, but the germination rate of some varieties did not reach the national compulsory standard, and the germinating potential of different varieties varied greatly. The highest and the lowest germinating rate were 90% and 15%, respectively. The grain weight of different varieties was greatly influenced by heredity, but the uniformity of single grain weight among varieties varied from 3.78 to 7.38. The single grain weight had significantly positive correlation with bud length, root length, bud weight, and root weight. In addition, the seed weight uniformity also had a significantly positive correlation with main root length, root weight, bud length, and bud weight. The population uniformity of maize at the germination stage was influenced by the uniformity of grain weight.

Key words: Maize, Seed quality, Grain weight, Uniformity, Germination rate, Germination potential

Table 1

Sampling situation of seed"

材料代号Material code 品种Variety 子粒类型Grain type 子粒大小Grain size 子粒形状Grain shape 价格(元/kg) Price (yuan/kg)
Y1 新玉18 硬粒 中 圆 18
Y2 新饲玉7号 硬粒 中 扁圆 30
Y3 新玉23 硬粒 中 圆 20
Y4 新玉24 半硬粒 中 扁圆 20
Y5 郑单958 半硬粒 小 扁圆 24
Y6 五谷568 硬粒 小 长扁 50
Y7 美玉929 (新玉11) 半硬粒 大 扁圆 25
Y8 美玉818 (新玉11极早熟型) 硬粒 小 圆 25
Y9 KWS1566 马齿 小 扁 35
Y10 KWS3564 马齿 小 长扁 40
Y11 张玉1233 半硬粒 大 扁圆 25
Y12 康农5号 硬粒 中 圆 28

Table 2

Sampling seed routine quality index %"

材料代号Material code 净度Cleanliness 含水率Moisture content 发芽势Germinability 发芽率Germination percentage
Y1 99.9 13.40 24 91
Y2 99.9 13.33 31 74
Y3 98.0 12.47 44 96
Y4 99.9 13.03 52 100
Y5 99.9 13.07 85 97
Y6 99.9 13.06 24 96
Y7 99.9 13.40 15 79
Y8 99.9 13.10 47 99
Y9 99.9 13.25 44 99
Y10 99.9 12.88 67 87
Y11 99.9 13.00 90 97
Y12 99.9 13.50 25 90

Table 3

Single grain weight and standard deviation, coefficient of variation and uniformity of maize varieties"

材料代号
Material code		 平均值(g)
Average		 最大值(g)
Maximum		 最小值(g)
Minimum		 标准差
Standard deviation		 变异系数(%)
Coefficient of variation		 整齐度
Uniformity
Y1 0.35 0.44 0.19 0.05 13.55 7.38
Y2 0.35 0.51 0.16 0.05 15.31 6.53
Y3 0.33 0.58 0.19 0.09 26.46 3.78
Y4 0.37 0.56 0.18 0.08 22.42 4.46
Y5 0.28 0.43 0.19 0.04 15.95 6.27
Y6 0.29 0.40 0.18 0.04 14.53 6.88
Y7 0.41 0.54 0.23 0.06 14.90 6.71
Y8 0.26 0.40 0.15 0.05 20.58 4.86
Y9 0.30 0.41 0.19 0.04 14.47 6.91
Y10 0.27 0.36 0.15 0.04 16.31 6.13
Y11 0.40 0.63 0.22 0.08 18.90 5.29
Y12 0.40 0.61 0.24 0.06 15.20 6.58

Table 4

Root number, main root length and root weight distribution of different maize varieties"

材料代号
Material code		 根数Number of roots 主根长Main root length 根重Root weight
平均值
Average		 最大值
Maximum		 最小值
Minimum		 整齐度Uniformity 平均值(cm)
Average		 最大值(cm)
Maximum		 最小值(cm)
Minimum		 整齐度Uniformity 平均值(g)
Average		 最大值(g)
Maximum		 最小值(g)
Minimum		 整齐度
Uniformity
Y1 4.47±0.09 7 3 4.85 8.88±1.47 12.5 7.0 6.03 0.03±0.01 0.051 0.012 3.20
Y2 4.61±1.11 6 2 4.15 6.34±1.96 9.3 1.9 3.24 0.02±0.01 0.042 0.130 2.48
Y3 4.05±0.67 6 3 6.07 9.87±1.48 13.6 7.2 6.66 0.04±0.01 0.062 0.016 4.00
Y4 4.99±0.87 7 2 5.76 10.54±2.24 14.6 5.7 4.70 0.05±0.01 0.066 0.029 4.83
Y5 4.10±0.62 6 3 6.65 7.89±1.27 10.5 5.9 6.18 0.02±0.01 0.034 0.011 4.09
Y6 4.60±1.09 7 1 4.20 6.28±1.77 9.8 0.8 3.55 0.03±0.01 0.055 0.013 2.81
Y7 4.57±0.07 6 3 6.28 5.88±1.98 9.2 2.5 2.97 0.03±0.01 0.044 0.017 4.11
Y8 4.34±0.78 7 3 5.58 10.78±2.13 17.2 8.2 5.05 0.03±0.01 0.065 0.012 3.33
Y9 3.22±0.58 5 2 5.56 7.12±1.88 11.1 3.7 3.78 0.02±0.00 0.032 0.011 4.50
Y10 3.13±0.67 6 2 4.71 5.98±1.98 9.2 2.0 3.16 0.02±0.01 0.038 0.011 3.53
Y11 3.98±0.06 5 3 6.76 6.50±1.51 9.2 3.8 4.31 0.03±0.01 0.051 0.014 3.92
Y12 4.47±0.92 7 3 4.85 8.82±1.51 12.0 7.0 5.86 0.03±0.01 0.057 0.012 3.46

Table 5

Bud length and bud weight distribution of different maize varieties"

材料代号
Material code		 芽长Bud length 芽重Bud weight
平均值(cm)
Average		 最大值(cm)
Maximum		 最小值(cm)
Minimum		 整齐度
Uniformity		 平均值(g)
Average		 最大值(g)
Maximum		 最小值(g)
Minimum		 整齐度
Uniformity
Y1 4.07±0.77 5.4 2.5 5.29 0.02±0.009 0.025 0.011 4.98
Y2 4.61±1.59 7.8 1.0 2.89 0.02±0.005 0.029 0.011 3.99
Y3 6.88±0.94 9.0 3.7 7.31 0.03±0.005 0.041 0.019 5.54
Y4 5.21±047 6.5 4.5 11.10 0.03±0.010 0.038 0.015 5.41
Y5 7.12±1.01 9.0 4.9 7.04 0.03±0.006 0.039 0.012 4.44
Y6 2.59±0.69 4.5 1.5 3.75 0.02±0.006 0.031 0.010 3.18
Y7 4.00±1.02 5.6 0.3 3.91 0.02±0.004 0.025 0.012 4.06
Y8 5.47±0.95 7.7 3.1 5.74 0.01±0.020 0.020 0.011 7.10
Y9 4.61±0.88 6.4 1.9 5.25 0.02±0.004 0.029 0.010 4.47
Y10 4.87±1.54 8.2 0.8 3.15 0.02±0.010 0.032 0.010 3.54
Y11 5.95±1.01 7.7 3.8 5.89 0.02±0.006 0.036 0.014 4.38
Y12 4.26±0.79 6.6 2.5 5.38 0.02±0.005 0.028 0.010 3.57

Table 6

Correlation analysis of single grain weight with root and bud index of different maize varieties"

项目Item Y1 Y2 Y3 Y4 Y5 Y6 Y7 Y8 Y9 Y10 Y11 Y12
根数Number of roots 0.087 0.293 0.049 0.120 0.052 0.165 0.069 0.068 0.117 0.177 0.041 0.087
芽长Bud length 0.426** 0.509** 0.466** 0.506** 0.553** 0.439** 0.601** 0.329** 0.489** 0.568** 0.558** 0.549**
主根长Main root length 0.496** 0.610** 0.622** 0.519* 0.463* 0.621** 0.546** 0.636** 0.526** 0.633** 0.468* 0.442*
芽重Bud weight 0.504** 0.509* 0.489** 0.558** 0.383** 0.555** 0.510* 0.581** 0.679** 0.544** 0.684** 0.546**
根重Root weight 0.679** 0.688** 0.648** 0.634** 0.478** 0.551** 0.552** 0.585** 0.541** 0.525** 0.714** 0.540**

Table 7

Correlation analysis of single grain weight homogeneity with root and bud index uniformity"

指标 Index 单粒重
Single grain weight		 根数
Number of roots		 主根长
Main root length		 根重
Root weight		 芽长
Bud length		 芽重
Bud weight
单粒重Single grain weight 1
根数Number of roots 0.310 1
主根长Main root length 0.547* 0.389 1
根重Root weight 0.688* 0.511 0.594* 1
芽长Bud length 0.564* 0.340 0.711** 0.728** 1
芽重Bud weight 0.674** 0.589 0.605* 0.584* 0.774** 1
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