Claim · model-written summary
Across the six maize cultivars, P 2000 tended to rise to a maximum at full individual leaf expansion and then decrease.
Zea maysNot reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Six Maize Cultivars”
e0“The P 2000 values tended to increase to a maximum at the time of full individual leaf expansion and then decrease”
Title
Photosynthetic Rates of Six Maize Cultivars During Development
L. M. Dwyer; D. W. Stewart; D. Balchin; et al. Agronomy Journal 1989. doi:10.2134/agronj1989.00021962008100040010x
Other claims from this paper (7)
- Observation In all cultivars, early leaves had lower P 2000 values at a given leaf age than late maturing leaves.
- Observation The duration of maximum P 2000 was longer for leaves nearest the ear than for earlier or later developing leaves.
- Observation Leaves nearest the ear of early maturing cultivars tended to have lower P 2000 than those of later maturing cultivars at comparable leaf ages.
- Observation Plant photosynthesis (P 2000) was low at the six-leaf stage, peaked just before tasselling and declined during brown silk, blister and dent stages, the same pattern in all cultivars.
- Observation A quadratic equation described the relationship between P 2000 and plant age.
- Observation Later-maturing cultivars had significantly larger P 2000 values than earlier-maturing cultivars at comparable phenological stages.
- Observation Significant cultivar differences were found in leaf development rate and in length of the vegetative period.