Cytology of Some Digitaria Species

Abstract

Meiosis was studied in six collections belonging to four different species of the genus Digitaria. Two of these four species were studied for the first time. In another species, a new chromosome number was recorded. In the remaining fourth species an earlier known chromosome count was confirmed.
Two collections belonging to D. glauca were studied and both showed abnormal meiosis (2n=45; 2n=39). The details of meiosis in these two collections are presented and the implications of 2n=39 on the basic number in the genus were also discussed.