1976 年 41 巻 3-4 号 p. 645-651
By colchiploidy a number of unstable polyploids were obtained. The progeny of the unstable aneuploid 2n=67 gave a number of stable polyploids 2n=66, 68, 70, 72 in the later generations. These stable polyploids which are above the 24 paired level is a positive proof of what Goodspeed (1954) has postulated.