1951 年 1 巻 1 号 p. 40-42
1.Observations on artificial 4x-Bellis perennis L. and 4x-Centaurea cyanus L. obtaind through colchicine treatment were described in view of breeding. 2.The chromosome numbers of B.perennis and C.cyanus were confirmed by the auther to be 2n=18 and n=9 for the former and n=12 for the latter, whichi did not accord with the results of Saito(1950) who had reported n=10 for both of them.