蘚類数種の染色体
IX ハイゴケ属の核型, 性染色体及び倍数性
1955 年 68 巻 804 号 p. 195-199
詳細
1955 年 68 巻 804 号 p. 195-199
1) The karyotypes of examined four species belonging to the genusHypnum are as follows; Hypnum circinatulum Schimp. _??_K(n)=6=V(X)+2V+2J+m(h) _??_K(n)=6=V(Y)+2V+2J+m(h) Hypnum plumaeforrne Wils. _??_K(n)=10=V(X)+4V+4+m(h) _??_K(n)=10=V(Y)+4V+4+m(h) Hypaum Fujiyamae (Broth.) Par. _??_K(u)=10=V(H)+4V+4+m(h) Hypnum reptile Michx. _??_K(n)=11=2V(H)+4V+4+m(h)
2) H. circinatulumis the basic species of this genus, and the other three are the hypodiploid species missing one h (H reptile) or one set of H and h ((H. plumaeforme, H. Fujiyamae).
3) The sex chromosomes X and Y which have been found inH. circinatulum andH. plumaeformeare the same in chromosomal morphology, but there was observed a slight difference between their heteropycnosis.
4) The two H chromosomes of monoeciousH. reptilemay be the sex chromosomes X and Y, because their morphology and heteropycnosis are similar to those of the sex chromosomes X and Y ofH. circinatulum, etc.
