Cytological Studies in the Genus Setaria (Gramineae)
1977 年 42 巻 3-4 号 p. 483-493
詳細
1977 年 42 巻 3-4 号 p. 483-493
1. Meiosis was studied in 29 collections belonging to 18 Setaria species. These included nine diploid collections belonging to nine species, fifteen tetraploid collections belonging to nine species and five hexaploid collection belonging to four species.
2. The diploid collections had 2n=18 except in S. homonyma where 2n=20 was observed. The tetraploid collections had 2n=36 and the hexaploids had 2n=54.
3. Meiotic irregularities in some polyploid collections were described and discussed.
4. Setaria alnaspicata, S. gerardi and S. palmata were cytologically examined for the first time; new counts were found in S. chevalieri snd S. homonyma.
5. Chromosomal races in S. sphacelata, S. pallide-fusca and S. verticillata were described and discussed.
