VEGETATIVE PROPAGATION EXPERIMENTS IN WHITE PINE 517 



Table 2. Rooting of P. gviffithii x strobus propagules obtained 

 from 5- and 15-year-old ortets: December, January, and March 

 collections 



Age of ortet 



5 vears 15 vears 



Propagule No. % No. % 



type rooted rooted rooted rooted d.f. x 2 



Cuttings 11 36.7 2 6.7 1 20.84^ 



Needle fascicles 12 40.0 6 20.0 1 6.67^ 



* Significant at 5% level; ** Significant at 1% level. 



Table 3. Rooting of P. griffithii x strobus cuttings obtained 

 from 2-, 5-, and 15-year-old ortets: May collection 



Ortet age No. rooted % rooted 



2 years 50 23.0 



5 years 45 34.6 



15 years 13 10.0 



Y 2 = I5.44** a d.f. = 2 



Significant at 1% level 



Table 4. Rooting of P. strobus cuttings obtained from 5- and 

 10-year-old and mature ortets: May collection 



Ortet age No. rooted % rooted 



5 years 15 11.5 



10 years 14 11.0 



Mature 1 0.8 



X 2 = 9.41** a d.f. = 2 



** Significant at 1% level 



