58 



GROWTH OF PLANTS 



100 



YEARS OF STORAGE 



Figure 19. Germination of dandelion seeds on moist filter paper after storage for 

 various periods at room temperature (R.T.), + 5^ C (41° F), and - 5° C (23° F) in 

 open containers (upper left) or sealed in glass tubes (upper right and lower half) with 

 moisture contents of 7.9, G.2, and 3.9 per cent. "Open" lots moisture at start was 7.9 per 

 cent. 



dried with CaO for sealing had one-third of the moisture removed before 

 sealing. It will be noted that the seeds sealed without drying degenerated 

 most rapidly. The moisture was too high for sealed storage at such a high 

 temperature. All the seeds kept well for six years in sealed storage after 

 the rather slight reduction in moisture, except pepper seeds, and even 

 they were improved by drying and sealing. More thorough drying prob- 



