32 



INHERITANCE OF SOME CHARACTERS IN WHEAT. 



This was observed in the following pure line crosses in which the 

 bearded parent is placed first :— 



1. American Club x Pusa 4. 



2. Pusa 22 x A 88. 



In both the beardless parents Pusa 4 and A 88 there was an entire 

 absence of tips, and these parents could be described as absolutely 

 beardless. In the second generation of these crosses a series of forms 

 was produced which we have classed with difficulty as fully bearded, 

 almost fully bearded, half bearded, forms with tips of varying length 

 and beardless (Plate III). If all the variously bearded and tipped 

 plants are classed as bearded, which would seem to be the most logical 

 method, the ratio bearded to beardless obtained was 15:1 and the 

 presence of two factors is indicated. Representatives of the various 

 classes are now being grown in the F 3 and the full explanation, as 

 well as the complete study of the F 2 , will be dealt with next spring as 

 soon as the plants are ripe. The details relating to the F 2 generation 

 of these crosses are given in the following table : — 



Table XV. 

 The F 3 generation of crosses between bearded and quite beardless 



parents. 



Bearding in the f., generation. 



