Claim · model-written summary
Starch contents of evergreen leaves differed among species at a given time.
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionValueQualifier
Verbatim
e0“The starch contents of evergreen leaves differ much at a given time according to the different species.”
Title
On the Starch of Evergreen Leaves and Its Relation to Photosynthesis during the Winter
Kiichi Miyaké Botanical Gazette 1902. doi:10.1086/328232
Other claims from this paper (10)
- Observation Monocotyledons generally had less leaf starch than dicotyledons, gymnosperms and pteridophytes, with none in some species.
- Observation Evergreen leaf starch decreased from November to a minimum in January and early February, then increased from late February.
- Observation Many evergreen leaves in Tokyo and middle and southern Japan retained mesophyll starch in winter, while some species had none at the coldest time.
- Observation Winter starch in evergreen leaves was generally low compared with other seasons, though abundant in a few species.
- Mechanism Winter photosynthesis formed starch in evergreen leaves, with translocation in the same season.
- Observation Guard cell starch decreased or disappeared in many species in winter, but persisted moderately in a few.
- Observation Most northern Japanese evergreen leaves nearly lost mesophyll and guard cell starch in winter; some retained a little.
- Observation Evergreen leaf starch was generally more abundant in spring than late summer or early autumn.
- Observation Some evergreen leaves in Tokyo had open stomata in winter.
- Observation The investigation did not verify complete winter absence of calcium oxalate crystals from leaves.