6 Brassica Crosses. 



As regards foliage there were found 



142 with Swede foliage. 

 38 Ragged Jack foliage. 

 18 Intermediate foliage. 



From the Mendelian ratio of 3 to 1, where Swede is dominant, we should expect 

 from 196 plants 



147 with Swede foliage. 

 49 Ragged Jack foliage. 



As regards the bulbing character there were 



Found (198 plants). Expected (from 196 plants). 



Bulbed 160 147 



Bulbless 38 49 



Probably some of the 160 plants with bulbs should have been placed in the bulbless 

 group, since it is difficult to distinguish slight bulb from a merely thickened stem 

 due to increased vigour. 



Classifying the plants obtained into groups with two pairs of characters in each, 



and an intermediate group, there were : 



Expected, according to the 

 Found Mendelian ratio of 9.3 X 3.1. 

 (198 plants). from 199 plants. 



Fig. 61. Bulbed with Swede foliage 117 112 



62. Ragged Jack foliage 30 ^43 37 



63. ,, Intermediate foliage 13 i 



64. Bulbless Swede foliage 25 37 



65. Ragged Jack foliage 8 ) ^ ^ 



66. Intermediate foliage 5 ) 



The intermediate plants showed evidence of Ragged Jack laciniation, and should 

 no doubt be placed with the Ragged Jack plants as indicated. 



White Swede on Ragged Jack Kale. 



This was the reciprocal of the preceding cross (see figs. 58 & 59). 



The plants of F 1 were bulbless and very similar to those of F 1 in the previous 

 cross, but weaker in growth and slightly divided ; the foliage was like that of the 

 Swede with slight indication of Ragged Jack parent (see PI. 8, fig. 67). 



The plants of F 2 are shown at figs. 68 to 73 and tabulated below. 



As regards foliage there were 



Found 094 plant.,. ^^pla^,'" 01 " 



156 with Swede foliage j 144 



33 Ragged Jack foliage 

 5 Intermediate foliage 



As regards bulbing character there were 



Found (194 plants). Expected (from 192 plants). 



Bulbed 136 144 



Bulbleas . 58 48 



