INHERITANCE -IMPROVEMENT BY BREEDING 203 



proportions, the [8-rovv ? x 8-row g giving 71*5 per cent, CHAP, 

 and the 8-ro\v ? x 1 8-row $ 76 per cent. The cross was 

 made between No. 904, an 8-rowed white dent, and No. 

 905, an 1 8-rowed yellow dent, both pedigree ears as regards 

 colour and row numbers, which bred true when selfed {Burtt- 

 Davy, 27). The results obtained are given in Table XLI. 



Fig. 84. — Undesirable types for seed. A, Mosaic arrangement of grains. 

 B, Failure to develop two pairs of rows : a 4-rowed ear. 



Eighty-nine ears from a commercial crop of Ladysmith, 

 studied by the writer, gave the following figures : — 



Row Classes ... 14 16 18 



Number of Ears 

 Percentages 



29 



16 



40 

 44'94 



20 

 22-47 



