Karyomorphological Studies on Members of the Tribe Andropogoneae; Sub-tribe Rottboellinae
1986 年 51 巻 1 号 p. 43-50
詳細
1986 年 51 巻 1 号 p. 43-50
The cytology of one species each of the four genera Rottboellia, Mnesithea, Manisuris and Hackelochoa has been studied and the basic numbers recorded are 10, 9, 8 and 7 respectively. The chromosomes are large in size and the karyotype is less specialized and predominated by metacentric (m) chromosomes while sub-metacentrics (sm) are very rare and acrocentrics and telocentrics are totally absent. There is a blending of advanced floral morphology with primitive karyotype charac-ters in the sub-tribe Rottboellinae. This sub-tribe shows similarity to members of the Maydeae in cytological characters like the presence of large chromosomes with primitive karyotype characteristics, basic numbers of 5 (or 10), 9 and 8 and the occurrence of species with n=5 in both tribes. So there is enough cytological evidence to suggest the close relationship of these two tribes.
