MENDEL'S PRINCIPLES APPLIED TO WHEAT HYBRIDS. 885 



Table A — continued. 



Spillnian s Table Xo. 



Plat Xo. 



14 Velvet " 



" Glabrous " 





E21 



77-8 



22-5 







E22 



74-4 



256 







E24 



55-0 



42-6 



VII . 





E25 



70-0 



32*9 





F2 



75-7 



24-4 







F3 



71-7 



28-3 







Fll 



77-1 



23*0 



VIII . 



F23 



76-8 



25-7 











16 



81-4 



200 



1 





17 



63-1 



36-2 



xi . *. h 





18 



716 



27-6 





112 



77-9 



23 2 







116 



87-4 



12-6 



l 





117 



85-8 



14-3 





f 



G4 



80-5 



19-7 







G5 



81-6 



74 







G13 



77-1 



20-8 







Gil 



93-2 



6-7 







G16 



78-6 



17-8 







G18 



74-4 



254 







H2 



696 



304 







H6 



69-5 



30-1 







H7 



68-1 



29 0 







H8 



72-3 



27-7 







H9 



79-3 



19-6 







H10 



71-6 



28-1 



XII . . < 





Hll 



73-1 



26-9 







H12 



741 



24-3 







Hll 



776 



220 







H15 



750 



24-5 







XI J. u 



71-7 



28'3 







H17 



73-3 



223 









7'-} -7 

 to t 



OU 1 







G7 



54-6 



46-4 







r 1 q 



(jy 



7A-n 



<D U 



Zo o 







Glo 



82-3 



177 







HI 



93-6 



6-2 





\ 



Gil 



82-7 



18-6 



Total 



60 



4492-5 



1490-8 



Average 





74-8 : 



24-8 



Actual ratio = 3*01 : 1 " Alendelian ratio =3:1 



In the original cross, varieties of T. vulgare with " velvet chaff" were 

 crossed with varieties of T. compactum with " glabrous chaff," the result 

 being sixty-three plants with "velvet chaff" and one plant only with 

 "glabrous chaff." In Mendelian terms the "velvet" character is 

 Dominant, and the "glabrous " Recessive. In the next generation sixty 

 of the "velvet " hybrids self -fertilised produced sixty plats of hybrids each 

 containing two types, viz. Dominant and Recessive. Table A gives 

 the approximate percentages of each type found in each plat, and it will 

 be seen that the figures agree well with the Mendelian expectation of 

 three Dominants to one Recessive, i.e. 75 % " velvet " + 25 % " glabrous." 

 The average percentage of the sixty plats works out approximately 74/8 

 Dominants to 24-8 Recessives, i.e. a ratio of 3-01 : 1, being a very close 



