REST PERIOD STUDIES WITH SEEDS 



41 



and then soaked for three hours, the germination was only 2 per cent. 

 Evidently the injury was from the soaking as was shown in treat- 

 ments 13 and 19. The highest percentages of germination followed 

 the 12-hour ether treatments viz., where seeds were dry, where they 

 had been soaked three hours, and soaked six hours, the percentages 

 being 25, 29 and 26 respectively. These were from 7 to 9 per cent 



TABLE 20. EFFECTS OF VARIOUS TREATMENTS ON GERMINATION OF SEEDS 

 KEPT IN COMMON STORAGE UNTIL MID-WINTER. TREATMENTS MADE IN 

 JANUARY AND FEBRUARY, 1913. SPECIES, Raphanus Sativus, L 



*See page 34 for detailed treatments. 



better than the germination shown by check or untreated seeds. If 

 the two latter are compared with seeds that were soaked three and 

 six hours, but with no further treatment, the differences in total germi- 

 nation are found to be 25 and 20 per cent respectively, in favor of the 

 etherized seeds. 



With onion seed the effects of freezing were contradictory. Freez- 

 ing dry seeds appeared to increase the total percentage of germination. 



