Claim · model-written summary
Temperatures above 30 degrees C suppressed germination of bur buttercup seeds.
- Taxon
- Ranunculus testiculatus
Ranunculus testiculatuse0 - Treatment
- Temperatures above 30 degrees Ce4
- Outcome
- germinatione4
- Direction
- suppressede4
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Bur buttercup (Ranunculus testiculatus Crantz) is an alien annual species that has spread rapidly through range and croplands in the western United States. This species is potentially poisonous and is currently a weed in cereal grain fields. We investigated the germination of the achenes (seeds). About 30% of the seeds of bur buttercup germinated without pretreatment, but only at cool to cold temperatures (maximum germination 28% at 5 degrees C)”
e4“All temperature regimes with optimum germination (defined as not lower than the maximum observed and one-half its confidence interval at 0.01 level of probability) occurred at relatively cool temperatures. Temperatures above 30 degrees C greatly suppressed or inhibited germination”
Title
Germination of Bur Buttercup Seeds
James A. Young; Ellen Martens; Neil E. West Journal of Range Management 1992. doi:10.2307/4003083
Other claims from this paper (12)
- Observation About 30% of bur buttercup seeds germinated without pretreatment, only at cool to cold temperatures.
- Observation Maximum germination of bur buttercup seeds without pretreatment was 28% at 5 degrees C.
- Association Light did not enhance germination of bur buttercup seeds.
- Association Washing did not enhance germination of bur buttercup seeds.
- Association Prechilling did not enhance germination of bur buttercup seeds.
- Association Acid scarification for 25 minutes increased germination of bur buttercup seeds.
- Association Gibberellic acid and potassium nitrate in the substrate synergistically enhanced germination of acid-scarified bur buttercup seeds.
- Observation Pretreated seeds incubated at constant or alternating temperatures reached maximum germination of 70%.
- Observation Temperature regimes with optimum germination of bur buttercup occurred at relatively cool temperatures.
- Observation Embryonic plants dissected from achene coats had 60% germination without additional pretreatment.
- Observation About 30% of seeds appear adapted for germination at cold seedbed temperatures.
- Observation The germination-dormancy requirements of bur buttercup seeds are complex.