Claim · model-written summary
Reduced light favored summer seed production.
- Taxon
- Guayulet0
- Treatment
- Reduced light intensity (44%-75% of unscreened light)e0
- Outcome
- seed productione0
- Direction
- favorede0
- Qualifier
- during June, July, and Auguste0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValue
Verbatim
t0“Guayule”
e0“Reduced light intensity (44%-75% of unscreened light) favored seed production during June, July, and August”
Title
J. W. Mitchell; A. Geraldine Whiting; H. M. Benedict Botanical Gazette 1944. doi:10.1086/335271
Other claims from this paper (19)
- Association A 25% light reduction was associated with 36% less rubber in fertile soil.
- Association Further light reduction decreased percentage and absolute rubber amount.
- Association In infertile soil, rubber percentage and amount were low and little affected by shading.
- Association A 25% light reduction reduced stem and root dry weight in fertile soil by 14.5%.
- Association More extreme light reduction further retarded vegetative growth.
- Association In infertile soil, leaf weight was greatest at 75% sunlight.
- Association Moderate shading had no appreciable effect on stem and root weight in infertile soil.
- Association Two-thirds of leaves under direct light remained green through winter versus one-third under deep shade.
- Association Shading stimulated seed production less during September.
- Association Lower light intensity was associated with a smaller proportion of large seeds.
- Association Withholding inorganic nutrients increased the proportion of small seeds.
- Association Withholding inorganic nutrients decreased the proportion of large seeds.
- Association Light reduction was not associated with appreciable seed-quality change.
- Association A 25% light reduction did not significantly affect stem cross-sectional area.
- Association Further light reduction decreased thickness and areas of stem tissues.
- Association Percentage areas of stem tissues were essentially constant across light and fertilizer treatments.
- Association Bark percentage was uncorrelated with rubber percentage.
- Association Under full light, resin percentage was equal under limited and supplied nutrients.
- Association Under shade, limited nutrients produced a higher resin percentage than supplied nutrients.