Claim · model-written summary
Specific gravity and density remained constant across the radius regardless of beetle attack.
PopulusNot reportedMaterialGeneCompoundOrgan / stageSecond interactorSecond interactor roleTreatmentComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Populus”
e0“constant values along the radius regardless of beetle attack.”
Title
Environment and Genetic Effects on Wood Quality of Populus
Mayuree Doungpet NCSU Libraries Repository (North Carolina State University Libraries) 2005
Other claims from this paper (19)
- Intervention effect Cottonwood leaf beetle defoliation decreased annual growth during the first three years.
- Observation Protected clones differed in specific gravity and density.
- Intervention effect Defoliation did not affect fiber length.
- Intervention effect Defoliation changed vessel number and diameter, with offsetting effects on vessel area.
- Observation Ray area was larger in unprotected trees.
- Intervention effect One clone produced more rays after defoliation.
- Intervention effect The other clone produced fewer, larger rays after defoliation.
- Observation The two families did not differ in growth rate at the stressful site.
- Association Family and clone significantly influenced specific gravity.
- Association Clone and radial position affected fiber length, which correlated with growth rate.
- Observation Clonal mean fiber length differed nearer the bark.
- Recommendation The authors suggest selecting for fiber length only after four or five years.
- Observation Trees differed significantly in fiber length and vessel area.
- Observation Trees did not differ in vessel numbers, vessel diameter or ray numbers.
- Association Cambium age significantly affected all wood properties.
- Observation The fastest growing high gravity tree had the longest fibers and most rays.
- Observation The fastest growing high gravity tree had low vessel area, number and diameter.
- Association Trees of similar growth rate varied widely in vessel area.
- Association Exceptionally fast growth could occur with low vessel area.