Claim · model-written summary
The number of asynaptic cells increased again at metaphase-I
- Taxon
- Oryza sativa
Oryza sativat0 - Organ / stage
- metaphase-Ie0
- Outcome
- number of asynaptic cellse0
- Direction
- increasede0
Not reportedMaterialGeneCompoundInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Chromosome studies in Oryza sativa L.”
e0“the number of asynaptic cells in diakinesis suddenly decreased in prometaphase-I and again increased in metaphase-I”
Title
Chromosome studies in Oryza sativa L.
Kan-Iti SAKAI The Japanese Journal of Genetics 1940. doi:10.1266/jjg.16.193
Other claims from this paper (9)
- Observation Univalent chromosomes occurred unexpectedly in the microsporogenesis of rice in 1934
- Observation Frequency of asynaptic cells was approximately 40% in all three rice varieties examined
- Association The number of asynaptic cells in diakinesis decreased suddenly at prometaphase-I
- Observation Univalents tend to avoid entering the equatorial plate
- Mechanism Close proximity of paired univalents is explained by an attractive force between the two homologous unpaired univalents
- Observation Most pollen grains were aborted
- Observation Fertility was extremely low
- Observation The 1934 rice harvest in the northern parts of Japan was extremely bad
- Mechanism Asynapsis of unknown cause might have played a role in the poor 1934 rice harvest