Abstract
In Timothy, Phleum pratense L., some experiments on the bulk emasculation by hot water method were made. 7 temperature classes (41'53'C) and 10 time classes (2-40 minutes) were used in combinations. In view of the destruction of the function of pollen as well as the higher percentage of seed set, the treatments 43'C-15 or 20 minutes and by 45 ?? -10 or 15 minutes were found best for practical use. 41'C-30 or 40 minutes may also be useful. The germination of seeds thus obtained was good, no remarkable difference being observed among different conrbinations in treatments.
