Contributions to the Cytology of the Genus Saccharum

VI. Chromosome number of Saccharum spontaneum in Japan Islands

Abstract

1) Chromosome numbers of Saccharuma spontaneum from Japan Islands were determined as follows; Japan proper 2n=112, n=56; Amami Oshima Island 2n=104; Okinawa Island 2n=112.
2) The writer's proposition (1950) that S. spontaneum of Japan Islands may have independent distribution from the neighbouring area was confirmed by the chromosome counting and comparison of other characteristics.