ON THE SELECTION OF RAPE SEED. 45 1 



SORT COLZA. 







Seeds of specific gravity of 



Days. 



Original 

 sample. 

 (100 grains) 



1. 125 & 



more. 

 (58 grains) 



1.105 — 1.085 



(100 grains) 



1.065— 1.045 

 (100 grains) 



1.025 & 'ess, 

 (loo grains) 



I Germinated. 



0 



0 



0 



0 



0 



II » 



13 



12 



22 



22 



13 



III 



38 



22 



52 



50 



56 



IV „ 



22 



12 



20 



22 



22 



V 



7 



5 



3 



3 



S 



VI 



6 



6 



I 



0 



I 



VII 



3 



0 



I 



0 



0 



VIII 



0 



0 



0 



0 



0 



IX 



0 



I 



0 



0 



0 



X 





0 



0 



0 



t 



XI 



0 



0 





0 



I 



Total 



Germination percentage. 



89 



5« 



96% 



99 



99% 



97 

 97% 



99 

 99% 



In the above experiment the germination was very irregular 

 owing to the low temperature of the season. It was, however, 

 observed that the germination percentage was always better in the 

 seeds of mediun specific gravity. After three weeks of germination 

 the seedlings were carefully measured and weighed and their dry 

 matter determined. The following results were obtained : — 



