Crops ›› 2017, Vol. 33 ›› Issue (2): 88-92.doi: 10.16035/j.issn.1001-7283.2017.02.015

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Kernel Moisture Content of Summer Maize at Physiological Maturity Stage in Huanghuaihai Region

Li Lulu,Xie Ruizhi,Wang Keru,Ming Bo,Hou Peng,Li Shaokun   

  1. Institute o f Crop Science,Chinese Academy of Agricultural Sciences/Key Laboratory of Crop Physiology and Ecology,Beijing 100081,China
  • Received:2017-01-15 Revised:2017-02-17 Online:2017-04-15 Published:2018-08-26
  • Contact: Shaokun Li

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Abstract:

In order to clarify summer maize kernel moisture content at physiological maturity stage and its influencing factors, experiments of cultivar comparison and sowing date were conducted in Beijing and Xinxiang, Henan in 2014-2016. The results showed that the kernel moisture content at physiological maturity stage was significantly different among cultivars. The average was 27.8%, changing from 21.5% to 33.1%. The 80% confidence interval was 24.2%-31.4%. The environment had significant effect on days from pollination to physiological maturity and the grain moisture content. Environment and cultivar possessed obvious interaction. The correlation between the kernel moisture content and the days from pollination to physiological maturity was lower. The average kernel moisture contents of main cultivars as Zhengdan 958, Xianyu 335, Nonghua 101, Zhongdan 909, Jingnongke 728, Huamei 1 and Nonghua 816 respectively were 28.4%, 24.9%, 27.9%, 29.1%, 28.7%, 29.2% and 29.9% at physiological maturity stage.

Key words: Maize, Physiological maturity, Kernel moisture content

Table 1

Cultivar experiment"

年份Year 品种Cultivar
2014 郑单958、先玉335、华美1号、KWS1568、KWS9384、先玉696、真金8号、中种8号、迪卡519
2015
 郑单958、先玉335、KWS1568、农华101、农华816、京农科728、中单909、宁玉721、联创808、裕丰303、中科玉505、禾田1号
2016
 郑单958、先玉335、农华101、农华816、京农科728、中单909、华美1号、真金323、新单58、新单65、辽单575、锦华318、锦华207、金通152、迪卡517、陕单636、丰垦139

Table 2

Sowing date experiment"

年份Year 品种Cultivar 播期Sowing date
2015
 郑单958
先玉335		 5月31日、6月11日、6月16日、6月20日、6月30日
2016
 郑单958
先玉335		 5月29日、6月04日、6月11日、6月18日、6月25日

Fig.1

Relationship between kernel moisture content at physiological maturity and days from pollination to physiological maturity"

"

2014年 2015年 2016年
品种
Cultivar		 子粒含水率
Kernel moisture content		 品种
Cultivar		 子粒含水率
Kernel moisture content		 品种
Cultivar		 子粒含水率
Kernel moisture content
KWS1568 31.4±0.5A 农华816 31.4±3.7A 丰垦139 33.1±2.0A
郑单958 31.3±2.1A 禾田1号 31.1±2.2A 中单909 31.6±1.5AB
先玉696 30.2±1.1AB KWS1568 30.8±5.4A 郑单958 29.8±1.1BC
迪卡519 28.4±0.8BC 京农科728 29.9±2.2AB 真金323 29.4±2.0BCD
中种8号 28.2±1.9BC 农华101 28.8±2.4ABC 新单58 28.7±1.5CDE
真金8号 28.1±2.0BC 中单909 27.8±2.3BCD 华美1号 27.8±2.2CDE
华美1号 27.2±1.0C 郑单958 27.2±0.9CDE 辽单575 27.7±2.3CDE
先玉335 26.8±0.9C 裕丰303 26.8±2.4CDE 新单65 27.5±0.5CDE
KWS9384 24.2±0.1D 宁玉721 26.2±1.9DE 锦华318 27.4±1.7CDE
中科玉505 26.1±1.2DE 农华816 27.1±2.1CDE
联创808 25.8±2.1DE 陕单636 26.8±3.3DE
先玉335 24.6±1.2E 京农科728 26.5±1.2EF
农华101 26.1±0.8EF
先玉335 26.0±2.5EF
迪卡517 24.0±2.4FG
金通152 23.5±2.5G
锦华207 21.5±1.7G

Table 4

Kernel moisture content at physiological maturity of main cultivars in Huanghuaihai summer maize region %"

品种Cultivar 样本量Sample size 子粒含水率Kernel moisture content 下限Lower limit 上限Upper limit
郑单958 Zhengdan 958 28 28.4±1.6 25.3 30.9
先玉335 Xianyu 335 28 24.9±2.0 20.7 29.7
农华101 Nonghua 101 14 27.9±2.4 24.8 32.9
农华816 Nonghua 816 14 29.9±3.7 23.1 35.1
京农科728 Jingnongke 728 14 28.7±2.2 25.3 32.9
中单909 Zhongdan 909 14 29.1±2.8 23.8 34.2
华美1号 Huamei 1 10 29.2±2.2 24.1 32.0

Fig.2

Frequency of kernel moisture content at physiological maturity of Zhengdan 958 and Xianyu 335"

Table 5

Kernel moisture content at physiological maturity under different sowing dates"

播期
Sowing date		 郑单958 Zhengdan 958 先玉335 Xianyu 335
子粒含水率(%)
Kernel moisture
content		 授粉日期
Pollination
date		 生理成熟日期
Physiological maturity date		 授粉到生理成熟天数
Days from pollination to physiological maturity(d)		 子粒含水率(%)
Kernel moisture
content		 授粉日期
Pollination
date		 生理成熟日期
Physiological
maturity date		 授粉到生理成熟天数
Days from pollination to physiological maturity(d)
2015-05-31 28.8±1.4 7月29日 10月04日 67 24.2±2.2 7月30日 10月04日 66
2015-06-11 28.0±1.5 8月06日 10月09日 64 25.9±1.6 8月06日 10月09日 64
2015-06-16 27.2±0.9 8月10日 10月14日 65 24.6±1.2 8月10日 10月14日 65
2015-06-20 27.1±1.4 8月15日 10月18日 64 24.7±1.8 8月15日 10月18日 64
2015-06-30 30.9±1.7 8月25日 10月21日 57 28.7±2.8 8月23日 10月24日 62
2016-05-29 30.2±1.0 7月28日 9月26日 60 25.9±4.1 7月27日 9月21日 56
2016-06-04 29.8±1.1 7月31日 9月28日 59 26.0±2.5 7月30日 9月26日 58
2016-06-11 29.8±1.0 8月03日 10月02日 60 22.7±2.0 8月03日 9月30日 58
2016-06-18 28.9±0.3 8月08日 10月06日 59 27.3±1.1 8月09日 10月06日 58
2016-06-25 30.7±1.6 8月13日 10月18日 66 25.7±1.6 8月15日 10月21日 67

Table 6

Variance analysis of kernel moisture content at physiological maturity stage"

变异来源Source of variation 自由度Degrees of freedom 平方和Sum of squares 均方Mean square F值F value
环境Environment 10 248.32 24.83 7.85**
品种Cultivar 1 433.66 433.66 137.08**
环境×品种Environment×Cultivar 10 83.48 8.35 2.64**
误差Error 124 392.27 3.16
总变异Total variation 145 1 148.73
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