REST PERIOD STUDIES WITH SEEDS 



35 



An analysis of Tables 14 to 22 inclusive brings out the fact that 

 etherizing old, dry seeds has but little effect on their germination. The 

 ether treatment with such seeds certainly did not hasten the germina- 

 tion very much, and in some cases there were indications that the 

 ether had exerted a detrimental effect on the total germination that 

 occurred. 



TABLE 14. EFFECTS OF VARIOUS TREATMENTS ON GERMINATION OF SEEDS 

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

 JANUARY AND FEBRUARY, 1913. SPECIES, Zea Mays, L. 



*See page 34 for detailed treatments. 



Freezing dry seeds apparently had but little effect on either the 

 time or the percentage of germination. However, etherizing for twelve 

 hours seeds that had been previously frozen quite materially hastened 

 the germination in some species, while others were uninfluenced in this 

 respect. In the main, the 12-hour ether treatment was more effective 

 in hastening germination than the 24-hour dose. 



