Cytotaxonomy of the Andropogoneae

I. Subtribes Dimeriinae and Saccharinae

抄録

1. The cytology of the subtribe Saccharinae, including chromosome numbers and meiotic behavior, is reviewed.
2. Chromosome numbers and behavior are reported for the first time for three genera, Eccoilopus, Spodiopogon, and Eulalia.
3. Twelve genera and twenty-eight species of the subtribe have now been studied cytologically.
4. Polyploidy is shown to occur in all genera in which more than one species has been studied.
5. Several different basic numbers are indicated but five (or ten) is by far the most frequently reported.
6. All chromosomes in the subtribe are small, but some are much smaller than others and there seems to be a phylogenetic trend from the larger to the smaller.
7. Some of the general morphological differences in the subtribe are discussed, especially in relationship to phylogeny.
8. An attempt is made, by combining morphological and cytological data, to diagram a likely path of evolution for the subtribe.