MR. A. W. SUTTON ON BRASSICA CROSSES. ` 343 
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 9.83 X 3.1, 
(198 plants). from 199 plants. 
Fig. 61. Bulbed with Swede foliage 117 112 
, 02, " „ Ragged Jack foliage MEL T 
„ 63. " , Intermediate foliage 18] ` 
‚ 64. Bulbless ,, Swede foliage 25 37 
» 65. " , Ragged Jack foliage I 13 13 
„ 66. " . Intermediate foliage — 5 
The intermediate plants showed evidence of Ragged Jack laciniation, and 
should no doubt be placed with the Hagged Jack plants as indicated. 
d 9 
White Swede on Ragged Jack Kale. 
This was the reciprocal of the preceding cross (see figs. 98 & 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 
РІ. 81. fig. 67). 
The plants of F 2 are shown at figs. 68 to 73 and tabulated below. 
As regards foliage there were— 
Expected, 3:1 (from 
Found (194 plants). Me mikato)" 
156 with Swede foliage 147 
33 „ Ragged Jack ede 49 
5 , Intermediate foliage 
As regards bulbing character there were— 
Found (194 plants). Expected (from 192 plants). 
Bulbed — ......... 136 147 
Bulbless ......... 58 49 
Classifying the plants into groups with two pairs of characters associated 
the results came out thus :— | 
Found Expected, 9.3 Х 9.1 ratio 
(194 plants). (from 192 plants). 
Fig. 68. Bulbed with Swede foliage 109 108 
‚ 69. » ‚ Ragged Jack foliage MIEL 36 
„ 170. " „ Intermediate foliage 4 
„ 71. Bulbless ,, Swede foliage 47 36 
» 72. " » Ragged Jack foliage "n T T 
„ 73. " , Intermediate foliage — 1 7 
