96 



The Ohio Joiiriial of Science [Vol. XXI, No. 3, 



upward translocation and root growth. It is apparently the 

 most important sugar of upward translocation in spring. 



7. Maltose reaches its maximum in both stems and roots 

 during summer and autumn at the time of translocation of 



J..JI, I '^ / /-f ■L^JJ. -Ljil Ar^ 7 /-r ,£.Jj£ ■/ /-T ^ /.f ^•LJ£ ./ /■T. 

 /^<x\ Juh«. T<^i) Au.q- St,f>. OU tYov- Ate- Tan Fih- May '^^^■ 



S«.o-son of r/ie. ye.a.r. 



Fig. 6. Curves showing the percentage of sucrose, glucose and maltose in 

 two-year-old seedlings of apple from June- to April, 1919-1920. The ordinates 

 represent the percentage of carbohydrates and the abscissae, the season of the 

 year. 



sugars from the leaves. It is very low in stems during the 

 dormant period, but increases slightly with the rise of sap in 

 spring. 



