1952 年 2 巻 2 号 p. 106-108
The percentages of germination of F1 seeds, dyad cells, good pollen grains and the fcrtility of F1 piants obtained by crossing between 8 varieties of Abel. esculerdu's and I variety of Abel. Manihot wcre different with the varieties of the mother plant, ranging ca.2.7%-83.3%, ca. 83.7 %-99.3%, ca. 28.9%-90.8% and ca. 0.00-0.22 per pod respectively. The F1 strains showing the good percentage in the gerrnination of F1 seeds were also superior in the other characters, while those tnat werepoor in the germination were also inferior in the other characters.