Claim · model-written summary
Leaf-weight ratio was not controlled by light amount or mean temperature.
- Taxon
- Helianthus annuus
Helianthus annuuse1 - Outcome
- leaf-weight ratioe0
- Direction
- not controllede0
- Qualifier
- amount of light or mean temperaturee0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the leaf-weight ratio is not controlled by either the amount of light or mean temperature”
e1“seed of Helianthus annuus”
Title
Physiological and Ecological Studies in the Analysis of Plant Environment
G. E. BLACKMAN; J. N. BLACK; A. W. KEMP Annals of Botany 1955. doi:10.1093/oxfordjournals.aob.a083445
Other claims from this paper (11)
- Observation The two years of data could be pooled except for stem-weight ratio.
- Association Diurnal temperature fluctuation accounted for little of the growth variation.
- Method / resource Log or square-root transformations of light data did not improve regression fit.
- Association Time of year significantly affected some dependent variables, including leaf-area ratio.
- Method / resource Including initial value with light and temperature eliminated the time-of-year effect on predicted week-end values.
- Association Root relative growth rate and root-weight ratio were positively linked only to temperature.
- Association Leaf growth in area or weight and area-based net assimilation rate depended positively on light alone.
- Association Weight-based net assimilation and whole-plant and stem growth rates correlated positively with temperature and light.
- Association Leaf-area ratio, leaf area to weight ratio and stem-weight ratio fell with increasing light.
- Association Leaf-area ratio, leaf area to weight ratio and stem-weight ratio rose with temperature.
- Method / resource Selected individual growth and assimilation regressions accounted for 47 to 91 percent of variation.