Claim · model-written summary
Among adjacent species, chromosome size decreased as chromosome number increased.
IrisVerbatim
e0“an increase in chromosome number was accompanied by a decrease in chromosome size”
t0“Iris”
Title
Cytogenetic Studies in the Genus Iris: Subsection Evansia, Benth
B. B. Chimphamba CYTOLOGIA 1973. doi:10.1508/cytologia.38.501
Other claims from this paper (8)
- Observation Karyotype analyses gave no simple explanation for the chromosome-number series.
- Observation I. japonica and I. confusa formed fertile hybrids despite different karyotypes.
- Observation Hybrids of I. japonica and I. confusa varied from 2n=39 to 2n=43 chromosomes.
- Observation I. wattii and I. confusa had similar karyotypes.
- Observation I. wattii and I. confusa successfully formed F1 hybrids.
- Observation I. wattii may represent a subspecies of I. confusa.
- Observation I. japonica was possibly triploid.
- Observation I. wattii may be the product of a chromosomal interchange.