Claim · model-written summary
Complete elimination of cotyledon photosynthesis after germination inhibited dry weight production of red pine seedlings.
- Taxon
- red pine
Pinus resinosae0 - Treatment
- photosynthesis of cotyledons was completely eliminated shortly after seed germinatione1
- Outcome
- dry weight production by seedlingse1
- Direction
- inhibitede1
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The role of photosynthetically active cotyledons on development of young red pine (pinus resinosa Ait.) seedlings”
e1“When photosynthesis of cotyledons was completely eliminated shortly after seed germination, the primary needles failed to expand, and dry weight production by seedlings was inhibited”
Title
The role of cotyledons in early development of pine seedlings
S. Sasaki; T. T. Kozlowski Canadian Journal of Botany 1968. doi:10.1139/b68-157
Other claims from this paper (5)
- Intervention effect Complete elimination of cotyledon photosynthesis after germination caused primary needles of red pine to fail to expand.
- Intervention effect Partial reduction of cotyledon photosynthesis caused a proportional decrease in primary needle expansion and in dry weight increment of red pine seedlings.
- Intervention effect Reduced cotyledon photosynthesis inhibited expansion of primary needles rather than formation of their primordia in red pine.
- Observation Formation of primary needle primordia in red pine occurred early in ontogeny.
- Mechanism Cotyledon growth appears to use carbohydrate reserves to a large extent, as cotyledons emerged even in the dark.