Abstract
It has been pointed out by yamasaki, one of the authors, that the seeds of winter wheat are less resistant to the toxic action of KClO3 than those of spring ones. In the present study, however, it is found that the seeds bore on winter wheat which is vernalized and sown in spring show much resistance to the toxicant, i. e., behave as seeds of spring wheat. This is believed to be due to the vernalization as well as spring sowing. Because, in the spring typed wheat, the seeds produced from spring soeing are more resistant to the toxicant than those from winter sowing, but the former shows less resistance comparing with those from vernalized plants, sown in spring. Further, the vernalized seeds of wheat, as a rule, being proved more resistant to the toxicant, than nonvernalized ones, it is duly assumed that the after-effect of the vernalization can be detected by testing the resistance to the toxic action of KclO3 with the seeds bore the vernalized plants, i. e., the seeds for next generation of the plants concerned.
