PLANT HYBRIDIZATION BEFORE MENDEL 281 



A Awnless-awned {glumes) 



Table XIII (Valley ? X Little Club $ ) 



Awnless Atoned Ratio 



Types I and II (heads long) 197.O 68.8 2.8 : 1 



Types III and IV (heads intermediate) 405.9 136.6 2.9 : 1 



Types V and VI (heads short) 219.8 72.1 3 : 1 



Table XIV (Little Club $ X Turkey $ ) 



Awnless Awned Ratio 



Types I and II (heads long) 130.5 44.O 2.9 : l 



Types III and IV (heads intermediate) 222.O 125.9 1.7 : l 



Types V and VI (heads short) 120.6 46.O 2.6 : l 



Table IX (Emporium $ X Little Club $) 



Awnless Awned Ratio 



434.1 145.1 2.9 : 1 



B Pubescent-glabrous {glumes) 



Table II (Little Club $ X Jones' V^inter Fife $ ) 



Pubescent Glabrous Ratio 



Types I and II (heads long) 444-1 U8.4 2.9 : l 



Types III and IV (heads intermediate) 769.4 274.2 2.8 



Types V and VI (heads short) 409.8 155.5 2.6 



Table XII (Farquhar $ X Little Club $ ) 



Pubescent Glabrous Ratio 

 Types V and VI (heads long, glumes brown) 582.3 149.7 3.8 : l 

 Types VII and VIII (heads long, glumes light) 206.3 324-0 no ratio 

 Types IX and X (heads intermediate, glumes 



brown) ^ 700.2 . 165.] 4.2 : 1 



Types XI & XII (heads intermediate, glumes 



light) 185.5 54-3 3-4 : 1 



Types XIII and XIV (heads short, glumes 



brown) 243.7 92.9 2.6 : l 



Types XV and XVI (heads short; glumes light) 160.8 17.4 5 : l 



It thus appears that Mendelian results for length of head (in 

 compactum-vulgare crosses), inheritance of awns, pubescence of 

 glumes and color of glumes were reported in. November, 1901, in 

 complete statistical form, although not analyzed with reference to 

 the ratios. 



Exact data do not seem to be obtainable as to inheritance of 

 length of spike in compactum-vulgare crosses, but in crosses be- 

 tween spelta and compactum (Malinowski, 1921), the length of 

 heads and the structure of the spikelets were reported as being 

 controlled each by a single gene. The Fo is reported as splitting 



