Abstract
A field experiment with eight maize hybrids cultivated mainly in Beijing was conducted to investigate the genotypic differences in grain yield, shott N accumulation and N use efficiency under two N level conditions. The results showed that the variation range of grain yield among maize hybrids were 62% and 57%, total shoot N accumulation were 55% and 48%, respectively. Nongda 108 had the highest grain yield and shoot N accumulation, and Zhongdan 120 and Zhong dan 2 were the lowest ones. With increased N application, N uptake efficiency and N use efficiency decreased significantly, whereas N utilization efficiency almost the same. Genotypic variation in N use efficiency decreased significantly, whereas N utilization efficiency almost the same. Genotypic variation in N use efficiency dependent mainly on uptake efficiency at both N levels.
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Claims 10
Claim · model-written summary
Grain yield variation among maize hybrids was 62% and 57% under two nitrogen levels.
Verbatim
e0“variation range of grain yield among maize hybrids were 62% and 57%”
Claim · model-written summary
Total shoot nitrogen accumulation varied by 55% and 48% under two nitrogen levels.
Verbatim
e0“total shoot N accumulation were 55% and 48%”
t0“maize hybrids”
Claim · model-written summary
Nongda 108 had the highest grain yield and shoot nitrogen accumulation.
Verbatim
e0“Nongda 108 had the highest grain yield and shoot N accumulation”
t0“maize hybrids”
Claim · model-written summary
Zhongdan 120 had the lowest grain yield and shoot nitrogen accumulation.
Verbatim
e0“Zhongdan 120 and Zhong dan 2 were the lowest ones.”
e1“Nongda 108 had the highest grain yield and shoot N accumulation”
t0“maize hybrids”
Claim · model-written summary
Zhong dan 2 had the lowest grain yield and shoot nitrogen accumulation.
Verbatim
e0“Zhongdan 120 and Zhong dan 2 were the lowest ones.”
e1“Nongda 108 had the highest grain yield and shoot N accumulation”
t0“maize hybrids”
Claim · model-written summary
Increasing nitrogen application significantly decreased nitrogen uptake efficiency.
- Taxon
- maize hybridst0
- Treatment
- increased N applicatione0
- Outcome
- N uptake efficiencye0
- Direction
- decreasede0
Not reportedComparator
Verbatim
e0“With increased N application, N uptake efficiency and N use efficiency decreased significantly”
t0“maize hybrids”
Claim · model-written summary
Increasing nitrogen application significantly decreased nitrogen use efficiency.
Not reportedComparator
Verbatim
e0“With increased N application, N uptake efficiency and N use efficiency decreased significantly”
t0“maize hybrids”
Claim · model-written summary
Nitrogen utilization efficiency stayed almost the same with increased nitrogen application.
- Taxon
- maize hybridst0
- Treatment
- increased N applicatione0
- Outcome
- N utilization efficiencye0
- Direction
- almost the samee0
Not reportedComparator
Verbatim
e0“With increased N application, N uptake efficiency and N use efficiency decreased significantly, whereas N utilization efficiency almost the same.”
t0“maize hybrids”
Claim · model-written summary
Genotypic variation in nitrogen use efficiency decreased significantly.
Verbatim
e0“Genotypic variation in N use efficiency decreased significantly”
t0“maize hybrids”
Claim · model-written summary
Genotypic variation in nitrogen use efficiency depended mainly on uptake efficiency at both nitrogen levels.
- Taxon
- maize hybridst0
- Treatment
- N levelse0
- Outcome
- Genotypic variation in N use efficiencye0
- Qualifier
- uptake efficiencye0
Not reportedOrgan / stageDirection
Verbatim
e0“Genotypic variation in N use efficiency dependent mainly on uptake efficiency at both N levels.”
t0“maize hybrids”
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See all 194 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.