SPELTLIKI-: BUD-SPOHTS IN COMMON WHEAT 



117 



gametes ot the speltoid kind. This elimination is either total, resulting 

 in the development of individuals of the normal type and of speltoid- 

 heterozygotes only, or partial, when homozygote speltoids also come 

 forth to a grea- 

 ter or smaller 



percentage. 

 During the last 

 years I have 

 found a num' 

 ber of speltoids 

 in the trial 

 plots at Svalöf, 

 and these forms 

 have been stu- 

 died rather ca- 

 refully in some 

 cases. In Ihe 

 course of these 

 studies I have 

 been fortunate 

 in finding some 

 plants in which 

 part of a spike 

 has the cha- 

 racter of a 

 speltoid hetero- 

 zygote, while 

 the other part 

 has the normal 



type. Thus 

 these abnormal 

 forms repre- 

 sent a kind of 

 chimaeras be- 

 tween the spel- 

 toid heterozy- 

 gote and the normal type. Although the study of these forms is not 

 yet wholly completed I have, nevertheless, thought it well to give a 

 short account of the matter already now. 



The first of these chimaeralike plants was found in a F.-plot (1917 



Fig. 1. A chimaera from the cross Ironwhcat X Tliulewheat II. 



