BOTANICAL CHARACTERS 



117 



breed grown under similar conditions. In the United States 

 it is said that 86 or 87 per cent of grain per ear may be 

 considered a lair proportion. In Transvaal-grown samples 

 examined, the percentage has usually been much lower, aver- 

 aging only 82-13 per cent. 



CHAP. 

 IV. 



A B 



Fig. 59. — Right-hand twist of rows. 



There does not appear to be any connection between high 

 yield of grain per ear and percentage of grain on the ear. 

 The heaviest yielding breed sometimes gives the lowest per- 

 centage of grain, while the one giving the highest percentage 

 of grain may give a relatively low yield ; but it does not 

 follow that the breed giving the highest percentage of grain 

 gives actually the lowest yield. 



