The SpEK\fATOGENi:sis of Hybrid Peas o43 



Fig.- 32. Fillbasket X Debarbieux. Metaphase of the first nuclear division of tet- 

 rad ; germination of microspore. 



Fig. ;i;i. Fillbasket X Debarbieux. Reconstruction of the vegetative and the 

 generative nuclei in first mito.sis of tetrad nucleus. 



Pl,ATK 19 



Fig. 34. Express, pure race. (Reduced.) 



Fig. 35. Serpette, pure race. (Reduced.) 



Fig. 36. Express X Serpette, showing Express reversion. (Reduced.) 



Fic. 37. Express X Serpette, showing Serpette reversion. Both of the figures of 

 Express X Serpette were drawn from plants selected at random. They are representa- 

 tive second generation forms. (Reduced.) 



