蘚類数種の染色体

VIII ツヤゴケ属及び他の2属の染色体と性分化

抄録

1) The karyotype analysis of mosses, eight species belonging to three genera, was carried out: Entodon Challengeri _??_ K(n)=11=V(H)+V+8(6v+2j)+m(h) E. chloroticus* _??_ K(n)=11=V(H)+V+8(6v+2j)+m(h) E. ramulosus _??_, _??__ K(n)=11=V(H)+V+8(6v+2j)+m(h) Brachythecium populeum _??_ K(n)=10=V(H)+3V+5(4v+j)+m(h) B. decurrentifolium* _??_, _??_ K(n)=10=V(H)+2V+6(4v+2j)+m(h) B. Buchanani var. japonicum* _??_ K(n)=10=V(H)+2V+6(4v+2j)+m(h) Hylocomium cavifolium _??_, _??_ K(n)=6=V(H)+2V+2J+m(h) H. proliferum* (sterile) K(n)=12=2V(H)+4V+2J+m+m(h)
2) By three dioecios species, i.e. Entodon ramulosus, Brachythecium decurrentifolium, Hylocomium cavifolium, the chromosomes and the heteropycnosis in prophase nuclei of both male and female gametophytes were carefully compaired with one another, but no sex chromosomes differed in morphology have been fouud
3) The chromosome numbers in the genus Hylocomium studied in this paper show a polyploid series of n=6, 12. The diploid species H. proliferum has two sets of chromosome complement which is approximately similar in the morphology of chromosomes to that of the monoploid species H. cavifolium.