Claim · model-written summary
Twenty bivalent chromosomes occur at heterotypic division.
- Taxon
- Cucurbita maxima
Cucurbita maximat0 - Outcome
- bivalent chromosomese0
- Value
- twenty bivalent chromosomese0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There are twenty bivalent chromosomes at the heterotypic division”
t0“Cucurbita maxima”
Title
Microsporogensis in Cucurbita maxima
Edward F. Castetter UNI ScholarWorks (University of Northern Iowa) 1925
Other claims from this paper (7)
- Observation Pollen mother cells form from one longitudinal row of primary sporogenous cells per anther lobe.
- Observation A perinuclear zone forms in early diakinesis.
- Observation Fibers from the perinuclear zone and nuclear interior form the multipolar spindle.
- Observation Root tip cells had forty somatic chromosomes.
- Observation A callose wall forms around the mother cell during diakinesis.
- Observation A special callose wall forms inside the original wall after heterotypic division.
- Observation Centripetally growing partition walls divide the mother cell into four.