Claim · model-written summary
At 240 kg ha-1, harvest index decreased.
- Taxon
- Wheat
Triticum aestivumt0 - Material
- Jimai 20t0
- Treatment
- nitrogen of 240 kg ha-1e0
- Outcome
- harvest indexe0
- Direction
- decreasede0
Not reportedGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Net photosynthetic rate,sucrose-phosphate synthase activity,sucrose content in flag leaves and biological yield increased significantly,but harvest index decreased,grain yield and nitrogen fertilizer use efficiency were not affected significantly by applying nitrogen of 240 kg ha-1.”
t0“Wheat Jimai 20”
Title
Yu Zhen ACTA AGRONOMICA SINICA 2007
Other claims from this paper (17)
- Intervention effect Intercellular CO2 concentration fell as nitrogen increased from 96 to 168 kg ha-1.
- Intervention effect Transpiration rate and stomatal conductance rose from 96 to 168 kg ha-1.
- Intervention effect Net photosynthetic rate and sucrose-phosphate synthase activity rose from 96 to 168 kg ha-1.
- Intervention effect Sucrose synthesis rose from 96 to 168 kg ha-1.
- Intervention effect Biological yield and grain yield rose from 96 to 168 kg ha-1.
- Intervention effect Nitrogen fertilizer use efficiency rose from 96 to 168 kg ha-1.
- Intervention effect At 240 kg ha-1, photosynthetic rate, enzyme activity and sucrose content increased significantly.
- Intervention effect At 240 kg ha-1, biological yield increased significantly.
- Intervention effect At 240 kg ha-1, grain yield and nitrogen efficiency did not change significantly.
- Intervention effect Excess nitrogen reduced transpiration, stomatal conductance and stomatal limitation significantly.
- Intervention effect Excess nitrogen reduced net photosynthetic rate significantly.
- Intervention effect Excess nitrogen increased intercellular CO2 concentration.
- Intervention effect Excess nitrogen decreased enzyme activity and sucrose content.
- Intervention effect Excess nitrogen decreased biological yield, harvest index and grain yield.
- Intervention effect Excess nitrogen decreased nitrogen fertilizer use efficiency.
- Mechanism The net photosynthetic rate decrease was attributed mainly to a mesophyll factor.
- Recommendation The authors identified 168240 kg ha-1 as the appropriate nitrogen amount for Jimai 20.