Claim · model-written summary
Height of Douglas-fir was not altered at the lowest UV-B level tested.
- Taxon
- Douglas-fir
Pseudotsuga menziesiie7 - Treatment
- lowest level of UV-B radiatione7
- Outcome
- Heighte7
- Direction
- not alterede7
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“At the higher UV-B irradiance levels, height was significantly reduced when compared with the Mylar control on loblolly, lodgepole, ponderosa, slash pines, and noble fir, respectively. Height of Douglas-fir was not altered and height of white fir was increased significantly at the lowest level of UV-B radiation tested”
Title
Ultraviolet-B radiation effects on early seedling growth of Pinaceae species
Susan V. Kossuth; R. Hilton Biggs Canadian Journal of Forest Research 1981. doi:10.1139/x81-033
Other claims from this paper (16)
- Association Biomass of lodgepole pine was significantly reduced at the highest UV-B radiation level, rated slightly susceptible.
- Association Biomass of loblolly pine was significantly reduced at the highest UV-B radiation level, rated slightly susceptible.
- Association Biomass of noble fir was significantly reduced at the highest UV-B radiation level, rated slightly susceptible.
- Association Biomass of ponderosa pine was significantly reduced at the highest UV-B radiation level, rated slightly susceptible.
- Association Biomass of slash pine was significantly reduced at the highest UV-B radiation level, rated slightly susceptible.
- Association Biomass of Douglas-fir was unaffected by ultraviolet-B radiation.
- Association White fir biomass increased significantly under UV-B radiation at 310, 637 and 680 mW m-2.
- Intervention effect Root weight tended to be reduced more than shoot weight under UV-B radiation in Pinaceae seedlings.
- Association Root:shoot ratios decreased significantly in certain UV-B regimes in Pinaceae seedlings.
- Association Leaf area declined significantly with increasing UV-B radiation in Pinaceae seedlings, except in white fir and Douglas-fir.
- Intervention effect Height of loblolly pine was significantly reduced at the higher UV-B irradiance levels compared with the Mylar control.
- Intervention effect Height of lodgepole pine was significantly reduced at the higher UV-B irradiance levels compared with the Mylar control.
- Intervention effect Height of ponderosa pine was significantly reduced at the higher UV-B irradiance levels compared with the Mylar control.
- Intervention effect Height of slash pine was significantly reduced at the higher UV-B irradiance levels compared with the Mylar control.
- Intervention effect Height of noble fir was significantly reduced at the higher UV-B irradiance levels compared with the Mylar control.
- Association Height of white fir was increased significantly at the lowest UV-B level tested.