Claim · model-written summary
At high nitrogen input, nitrogen use efficiency variation mainly relates to nitrogen uptake.
Zea maysNot reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingDirectionValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Variation in NUE at high N-input is mainly related to variation in N- uptake”
t0“maize”
Title
Genetic variation and selection for nitrogen use efficiency in maize : A synthesis
A. Galláis; Marie Coque Maydica 2005
Other claims from this paper (13)
- Observation Studies report genetic variation in nitrogen use efficiency at a given fertilization level.
- Association Genotype and nitrogen fertilization interact significantly for nitrogen use efficiency.
- Association Low and high nitrogen input yields correlate strongly when yield reduction at low input is at most about 35%.
- Observation Genetic variation is expressed differently at low and high nitrogen input.
- Association At low nitrogen input, both nitrogen use efficiency components may matter, particularly utilization efficiency.
- Mechanism Genotype by nitrogen effects on grain yield appear to arise from genotype by nitrogen effects on kernel number.
- Recommendation Reducing kernel abortion after fertilization is necessary for good nitrogen use efficiency under low input.
- Association Short anthesis-silking interval and prolific genotypes seem able to remobilize nitrogen efficiently and avoid embryo or ear abortion.
- Association Leaf area duration appears important for post-silking nitrogen uptake, grain filling and nitrogen use efficiency at any nitrogen input.
- Observation Nitrogen remobilization also matters at low input.
- Observation QTL results tend to support different genetic variation expression at low and high input.
- Recommendation Selection experiments favor selection under low nitrogen input for maximum genetic gain there.
- Observation Developing varieties better adapted to low nitrogen input appears feasible.