Cytological studieS on forage plants. (III) : Chromosome numbers in Miscanthus.

Abstract

Miscalcthus sileelesis ANDERSS. var. coudelcsatus HACK, collected at Misaki and Inatori, and M. ti, ectorius (STEUD.) HACK. collected in Gifu and Shiga Pref. were found to be diploid, the chromosome number observed being 1c='19, 2n=38. With regard to M. tiinctorius. TAKIZAWA had previously found tetraploid and hexaploid plants Therefore, the discovery of diploid implies the establishment of a complete polyploid series. Moreover, M. tinctorius seems to be different in geographical distribution with polyploidy. It was observed in M. sin;ensis, Ie=19, 2 Ie=38, the same chromosome number as TAKIZAWA'S result. But in the present experiment, aneuploid was not observed which TAKIZAWA had found.