Crops ›› 2016, Vol. 32 ›› Issue (6): 38-43.doi: 10.16035/j.issn.1001-7283.2016.06.007

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Screening on Indexes of Nitrogen Efficient Maize Varieties

Cui Wenfang,Gao Julin,Yu Xiaofang,Wang Zhigang,Sun Jiying,Hu Shuping,Su Zhijun,Xie Min   

  1. Agricultural College,Inner Mongolia Agricultural University,Hohhot 010019,Inner Mongolia,China
  • Received:2016-09-07 Revised:2016-11-01 Online:2016-12-15 Published:2018-08-26

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Abstract:

Using nine super-high-yield maize varieties as materials, under nitrogen and no-nitrogen applied conditions, high efficient varieties were screened by using yield and indexes in nitrogen conditions, and screening indexes were analyzed. The results showed that Zhengdan 958, Jinshan 27 and Zhengdan 17 were nitrogen-efficient high-yield varieties. The accumulation ability of vegetative organs of nitrogen-efficient high-yield maize varieties was stronger than those of low-yield inefficient varieties from silking stage to filling stage, and the SPAD values of the silking stage had significant advantage.

Key words: Maize, High-yield, Nitrogen use efficiency, Screening indexes

Table 1

The variance analysis of NUE and related indicators of super-high-yield maize hybrids under different nitrogen application"

变异来源
Variation source		 自由度
Degree of freedom		 氮利用
效率
NUE		 成熟期全株总氮
Total nitrogen of mature period		 吐丝期茎叶总氮
Total nitrogen of stems and leaves at silking stage		 灌浆期茎叶总氮
Total nitrogen of stems and leaves at filling stage		 成熟期茎叶总氮
Total nitrogen of stems and leaves at mature period
氮水平Nitrogen level 1 ** ** ** ** **
品种Variety 8 ** ** ** ** **
氮水平×品种
Nitrogen level×Variety		 8 ** ** ** ** **
变异来源
Variation source		 自由度
Degree of freedom		 子粒吸
氮量
N of grain		 灌浆期SPAD值
SPAD value of silking stage		 穗位叶叶面积
Area of ear leaf		 硝态氮
Nitrate nitrogen		 氨基酸
Amino acid content
氮水平Nitrogen level 1 ** ** ** * *
品种Variety 8 ** ** ** * *
氮水平×品种
Nitrogen level×variety		 8 ** ** ** * *

Table 2

The correlation analysis of NUE and nitrogen accumulation of maize hybrids under different nitrogen application"

氮水平
Nitrogen level		 指标Index 氮效率
NUE		 茎叶总氮Total nitrogen of stems and leaves 植株氮积累量
N accumulation
of plant		 子粒吸氮量
Amount of nitrogen
absorption of grain
吐丝期
Silking stage		 灌浆期
Filling stage		 成熟期
Maturation stage
施氮肥
Nitrogen		 吐丝期茎叶总氮 0.8932*
灌浆期茎叶总氮 0.2311 0.5479
成熟期茎叶总氮 0.1966 -0.1609 -0.1488
植株氮积累量 0.5444 0.3342 -0.1369 0.4694
子粒吸氮量 -0.0575 0.1440 -0.2296 -0.8920* -0.1815
氮收获指数 -0.3988 -0.1319 -0.0501 -0.8728 -0.7904 0.7458
不施氮肥
No nitrogen		 吐丝期茎叶总氮 -0.3280
灌浆期茎叶总氮 0.9352* -0.1276
成熟期茎叶总氮 -0.8426 0.6654 -0.7556
植株氮积累量 0.5406 0.9581* -0.3458 0.8432
子粒吸氮量 -0.2316 0.8383 -0.1655 0.7114 0.8551
氮收获指数 0.3709 0.2250 0.2384 0.1201 0.1928 0.6716

Fig.1

Screening of high yield and nitrogen efficient maize hybrids"

Table 3

The correlation analysis of NUE physical signs of super-high-yield maize hybrids under different nitrogen application"

氮水平
Nitrogen level		 指标Index 氮利用效率
NUE		 穗位叶叶面积
Area of ear leaf		 吐丝期SPAD值
SPAD value of silking stage		 灌浆期SPAD值
SPAD value of filling stage		 硝态氮浓度
Nitrate nitrogen
施氮肥 Nitrogen 穗位叶叶面积 0.1752
吐丝期叶绿素SPAD 0.5844 0.5143
灌浆期叶绿素SPAD 0.4205 0.1159 0.8344
硝态氮浓度 0.2926 0.8791 0.3592 -0.1863
氨基酸浓度 0.8793* 0.2197 0.4863 0.5379 0.0826
不施氮肥
No nitrogen		 穗位叶叶面积 0.4081
吐丝期叶绿素SPAD 0.8820* 0.6782
灌浆期叶绿素SPAD -0.0334 0.4096 -0.0728
硝态氮浓度 0.6283 0.5338 0.4088 0.3471
氨基酸浓度 -0.8903* -0.0815 -0.7579 0.5703 -0.2358

Table 4

The screening index comparison of two super-high-yield maize hybrids"

氮水平 Nitrogen level 类型 Type 杂交种Hybrid 氮效率(kg/kg)
NUE		 吐丝期茎叶总氮(g/株)
Total N of stems and
leaves at silking stage		 灌浆期茎叶总氮(g/株)
Total N of stems and leaves at filling stage		 吐丝期SPAD值
SPAD value of silking stage		 氨基酸浓度(μg/mL)
Amino acid content
施氮肥
Nitrogen		 高产氮高效型 郑单958 23.08 3.10 3.42 57.05 0.054
金山27 22.99 2.98 3.92 56.63 0.023
郑单17 21.02 2.88 4.60 55.95 0.016
均值 22.36 2.99 3.98 56.54 0.031
低产氮低效型 内单314 20.39 2.77 3.43 57.35 0.011
京单28 19.82 2.44 2.86 52.40 0.015
均值 20.11 2.61 3.15 54.88 0.013
不施氮
No nitrogen		 高产氮高效型 郑单958 258.23 2.10 2.91 56.40 0.056
金山27 245.21 2.44 2.95 57.40 0.064
郑单17 244.04 2.46 2.74 55.05 0.065
均值 249.16 2.33 2.87 56.28 0.062
低产氮低效型 内单314 103.37 2.72 2.84 53.45 0.136
京单28 118.38 2.16 2.40 54.05 0.080
均值 110.88 2.44 2.62 53.75 0.108
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