Killing of Plant Tissue by Low Temperature 



235 



The following table gives the results of freezing Marianna plum 

 roots : 



Table 33. Showing Relative Resistance to Low Tempera- 

 ture OF Year-Old Seedling Plum Roots Grow- 

 ing and in a Thoroughly Dormant 



Condition. 

 Date of Freezing, March 22, 1913. 



