Claim · model-written summary
Trunk diameter, total leaf area and total leaf number per tree relate to tree age by a power equation.
- Treatment
- tree agee0
- Outcome
- trunk diameter per tree, total leaf area per tree, and total leaf number per treee0
CitrusNot reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingDirectionValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The relationships between tree age and mean blade area per tree, mean blade area per class per tree, mean blade fresh weight per tree, crown surface per tree, crown volume per tree, ratio of crown surface to crown volume per tree, trunk diameter per tree, total leaf area per tree, and total leaf number per tree can be expressed by an equation of the general type y = bxn, where x is time”
t0“Growth of the Photosynthetic Area of Citrus”
Title
Growth of the Photosynthetic Area of Citrus
F. M. Turrell Botanical Gazette 1961. doi:10.1086/336117
Other claims from this paper (19)
- Observation The frequency curves of leaf numbers were normal in the three youngest citrus trees.
- Association Mean blade area per tree, mean blade area per class per tree and mean blade fresh weight per tree relate to tree age by a power equation.
- Association Crown surface, crown volume and their ratio per tree relate to tree age by a power equation.
- Association Crown diameter, crown surface and crown volume relate to tree height by an allometric equation.
- Association The ratio of crown surface to crown volume, trunk diameter, total leaf area and total leaf number per tree relate to tree height by an allometric equation.
- Association Mean blade area and mean blade fresh weight per class per tree relate to blade length, and crown surface relates to crown volume, by allometric equations.
- Association Trunk diameter and crown volume, total leaf area and crown volume, and total leaf area and trunk diameter relate by allometric equations.
- Association Mean blade area per class per tree relates linearly to blade fresh weight.
- Method / resource An exponential equation describes the trunk diameter and total leaf area relation more precisely than the allometric equation.
- Observation As the Valencia orange tree ages, its shape changes and the shape of its leaves changes.
- Observation Number of leaves increases more rapidly with age than any other above-ground characteristic of citrus trees.
- Observation Mean leaf-blade area and mean leaf-blade fresh weight per tree decrease with the age of the tree.
- Association A power function described leaf-blade area in terms of blade length for four citrus varieties.
- Observation The allometric coefficient was largest for Valencia orange leaves.
- Observation The allometric coefficient varied with the age of the tree from which the leaves were picked.
- Observation The allometric coefficient for Valencia orange leaves was 1.851-1.982.
- Observation The allometric coefficient for grapefruit leaves was 1.789.
- Observation The allometric coefficient for lemon leaves was 1.784.
- Observation The allometric coefficient for Washington Navel orange leaves was 1.713.