Claim · model-written summary
From 0.25 to full daylight, light did not greatly modify regulator effects on three growth measures.
- Taxon
- Helianthus annuus
Helianthus annuust0 - Treatment
- level of lighte0
- Outcome
- proportionate changes in the relative growth rate, leaf-area ratio, and net assimilation ratee0
- Direction
- not greatly modifiede0
- Comparator
- 0.25 daylight and full daylighte0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Between 0.25 daylight and full daylight the proportionate changes in the relative growth rate, leaf-area ratio, and net assimilation rate induced by sub-lethal amounts of the growth regulator are not greatly modified by the level of light”
t0“Helianthus annuus”
Title
G. E. BLACKMAN; R. C. ROBERTSON-CUNINGHAME Journal of Experimental Botany 1955. doi:10.1093/jxb/6.2.177
Other claims from this paper (12)
- Intervention effect Sublethal regulator amounts reduced relative growth rate, leaf area ratio and leaf area to weight ratio.
- Intervention effect Net assimilation rate was relatively unaffected.
- Intervention effect At 0.12 daylight, shaded plant reactions differed markedly from unshaded plants.
- Intervention effect Shade before and after spraying reduced the concentration causing 50% mortality to one tenth of full daylight.
- Association Shoot growth reduction depended more on light after application than before.
- Intervention effect Postapplication 0.12 daylight caused greater depression of leaf growth, especially first leaves.
- Intervention effect Shade depressed first internode growth more.
- Intervention effect Under shade, low regulator doses could greatly increase second internode growth.
- Intervention effect Shade timing had different significant effects on regulator induced leaf and internode growth changes.
- Intervention effect High light after application accelerated leaf penetration.
- Intervention effect Light before application had no significant effect on leaf penetration.
- Association Transport from treated leaf to shoot was greater in full daylight after application.