抄録
The chromosome numbers in the pollen mother cells of Scirpus juncoides Roxb. var. hotarui Ohwi, S. juncoides Roxb. var. ohwianus T. Koyama and S. wallichii Nees were investigated, and recognized as follows:
1. The numbers of chromosomes in the PMC of S. juncoides var. hotarui, S. juncoides var. ohwianus and S. wallichii were 22, 37 and 36 respectively.
2. The chromatin bridges were not observed in the I- and II-anaphase in these three species.
