538 



M. Kli. ChaUakhian 



g/1); (3) kinetin (0.001 g/1); (4) heteroauxin (0.00001 g/1); and (5) GA3 

 (0.0005 g/1). Aliogether, three sets of experiments were carried out. 

 The results ot the third set, which was started January 14, 1959, are 

 mainly given in the present paper. 



Two or three days after the isolated tips were transferred to the 

 artificial nutritional medium, growth of leaves began, and during the 

 next 7 to 10 days growth of shoots and formation of calluses were 

 observed. Root formation commenced from the 15th to the 20th days. 

 Those plants in which roots were formed had a rapidly growing main 

 shoot, whereas in the absence of roots, growth of shoots was much 

 slower. Perilla leaves which developed before the appearance of 

 roots were usually red, whereas those on the rapidly growing shoot 

 formed after the appearance of the roots were green (Figure 5). 



i 



i 



D 



B 



I'ig. 5. Growlli of young Perilla Jiankinensis plants tullivalcd in ust lul)c-s in 

 Willie's medium under long-day conditions. A, control; B, adenine (0.001 g/1); C, 

 kinetin (0.0001 g/1). D, 1 he terminal buds of Perilla during the first day of plant- 

 ing are shown in the up])cr right part of the figure. 



