266 Inheritance of Glume Length and of Colour in Oats 



TABLE III. 



Glume Lengths in Millimetres 



Whole Numbers 

 \ below 

 I above 



18 19 20 21 22 23 24 25 26 27 28 29 30 



1 15 7 41 8 12 33 5 02 



ii0 2|i2 2J22 1i01 



I i 2i \ 2 2i 2 2 11 10 



Totals for each length IJ 2 5^ 9^ 7 3^ 12J 16^ 7 6^ 6^ 1 



CHART III. 



17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 



Glume Length in mms. 

 Average Length of Extracted Longs = 24 -15 mms. 



Parent 



= 29-23 mms. 



Briefly, the result of crossing a long-glumed wheat with a short- 

 glumed is this : — 



Along with the ordinary segregation there is established in the F^ 

 generation a kind of telescopic effect, whereby the means of the two 

 homozygote curves are brought nearer to that of the heterozygotes 

 than the means of the parents would actually be. This condensation 

 persists right through into the F^ generation in which, owing to the 

 possibility of isolating the ' pure long ' and ' pure short ' curves, it can 



