Claim · model-written summary
Seeds of most johnsongrass ecotypes were highly dormant.
- Taxon
- johnsongrass
.jpg?width=60)
Sorghum halepensee0 - Material
- vegetative ecotypese0
- Organ / stage
- Seedse0
- Outcome
- highly dormante0
- Qualifier
- most ecotypese0
Not reportedGeneCompoundInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“We studied germination of seeds of 44 morphologically distinct, vegetative ecotypes of johnsongrass ( Sorghum halepense (L.) Pers.). Seeds of most ecotypes were highly dormant”
Title
Seed Dormancy and Germination in Ecotypes of Johnsongrass
R. B. Taylorson; C. G. McWhorter Weed Science 1969. doi:10.1017/s0043174500054230
Other claims from this paper (4)
- Intervention effect Continuous fluorescent light, a KNO3 substratum and an alternating 20 to 35 C temperature regime gave the best germination without low temperature pretreatment.
- Intervention effect Two weeks at 10 C followed by a shift to 40 C for 2 hr was effective in breaking seed dormancy.
- Observation Germination was markedly similar among the 12 ecotypes harvested in each of 2 years.
- Mechanism Seed dormancy is largely imposed by the relative degree of mechanical restriction afforded by the seed coat.