An Occurrence of Restitution-Nuclei in the Formation of the Embryosacs in Balanophora japonica, Mak.
1928 年 42 巻 495 号 p. 117-129
詳細
1928 年 42 巻 495 号 p. 117-129
In this paper an occurrence of restitution-nuclei in the formation of the embryosacs in Balanophora japonica has been reported.
The number of chromosomal elements found on the equatorial plate of the heterotype division varies from 94 to 112 so far as the present investigations are concerned. There is a correlation between the number of these elements and their sizes. These facts seem to show that at least in some of the chromosomes there is a tendency to form gemini, but the number of such chromosomes varies in different embryosac mother cells. The chromosome number in somatic Cells seems to be not far from the largest number counted in the heterotype division, 112.
The present investigations were undertaken at Prof. FUJII'S suggestion and under his supervision more than ten years ago. In publishing this little note, the writer wishes to express his sincerest thanks to Prof. FUJII for his advice and criticism throughout the work, and for his kindness in giving the writer permission to use his material.
