Claim · model-written summary
The authors attributed leaf-blade physiological polarity to differences in relative hydration.
- Taxon
- tobacco
Nicotiana tabacumt0 - Outcome
- physiological heterogeneity and polaritye0
- Qualifier
- different relative hydration levelse0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This physiological heterogeneity and polarity of the leaf blade originating in the ontogenesis of its extension growth is causally based on the different relative hydration levels.”
t0“tobacco”
Title
Bohdan Slavík Biologia Plantarum 1963. doi:10.1007/bf02933646
Other claims from this paper (11)
- Observation Transpiration at the tobacco leaf apex was about 50 to 70 per cent lower than at the base.
- Observation Natural permanent water saturation deficit at the leaf apex was about 10 per cent lower.
- Observation Tobacco stomatal density at the leaf apex averaged 40 per cent lower.
- Observation Sugar beet stomatal density at the leaf apex averaged 40 per cent lower.
- Observation Stomata at the leaf apex were 30 per cent larger.
- Observation Relative stomatal pore area index did not differ significantly between apex and base.
- Observation Photosynthetic rate per area in saturated leaves was 17 per cent lower at the apex.
- Observation Chlorophyll content per unit area was greater at the thicker leaf apex.
- Observation Respiration rate per area was significantly lower at the leaf apex.
- Observation Respiration rate per dry weight was significantly lower by 12 per cent at the leaf apex.
- Observation Similar but smaller physiological differences occurred between leaf edge and center.