122 



A, AKERMAN 



of the same cross between Brown Sclilanstedt spring-wheat and 0715. 

 The phmt in question has three straws two of which have quite typical 

 spikes. The spike of the third straw, however, has firmly invested 

 outer glumes except in the lower part, where the spikelets on one 



side have disten- 

 ded outer glumes 

 of the normal 

 type, while on the 

 other side they 

 are speltoid (fig. 

 5). At the top of 

 the spike all the 



spikelets have 

 speltoid outer glu- 

 mes. The lower 

 part of the spike 

 seems also to be 

 a sectorial chi- 

 maera between 

 the normal type 

 and its speltoid 



heterozygote, 

 while the upper 

 part seems to be 

 heterozygous. AH 

 the seeds of the 

 spike gave rise to 

 plants of the nor- 

 mal type (20 

 plants). A real 

 chimaera between 

 the normal type 

 and its corre- 

 sponding speltoid 

 is probably pre- 

 sent also in this 

 case. The speltoid sector is also here responsible for only the 

 epidermis of one straw. In the lower part of the chimaera-like spike 

 the speltoid component seems to have given rise only to part of the 

 epidermis, while in the development of the upper part of the spike 



Fig. 5. A chimaera from the cross Brown Schlaiistedt 

 spriiig-wlieat X Horsumwheat (1917 — 165). 



(I and f. The splice with l)oth typical and speltoid 

 onter glumes. 



b. One of tlie normal spikes. 



