344 MR. A. W. SUTTON ON BRASSICA CROSSES. 
d Ф 
Kohl Rabi on Thousand-headed Kale. 
There is little need to describe the parent plants minutely. The Kohl Rabi 
has a thickened bulbous stem with broad thinnish leaves, the Thousand-headed 
Kale having an elongated and very mueh branched stem bearing large 
numbers of leaves (figs. 74 & 75). 
The plants of F 1 were somewhat intermediate in character between the 
parents (fig. 76). 
Segregation took place in the F 2 generation, the results being as follows. 
As regards the bulbing character there were :— 
Found (207 plants). Expected (from 208 plants). 
Bulbed ......... 154 156 
Bulbless ......... 53 52 
PI. 32. fig. 77. 60 of the bulbed plants very closely resembled the Kohl Rabi 
grandparent in bulb, but had strong Thousand-headed Kale 
foliage. 
>> 78. 94 had similar Thousand-headed Kale foliage, but the bulbing 
character was not so pronounced. 
„ (9. 53 had elongated thickened stems shorter than the typical 
Thousand-headed Kale; the foliage was like that of the 
latter plant. 
d ? 
Thousand-headed Kale on Kohl Rabi. 
This is the reciprocal of the preceding cross (see figs. 74 & 75). 
The plants of F 1 were intermediate in character between the parents as 
before described, having Thousand-headed Kale foliage and slight bulbing 
tendency (fig. 80). 
In F 2 the following results were obtained (figs. 81, 82, 83, & 84) :— 
Аз regards the bulbing character there were— 
Found (201 plants). Expected (from 200 plants). 
Bulbed . ......... 185 150 
Dulbless ......... 66 50 
The bulbed plants included 44 well-developed Kohl Rabi against 60 in the 
reverse cross, and 66 slightly bulbed against 94 in the reverse cross. But 
amongst the bulbless plants none were seen resembling the Thousand-headed 
Kale as in the reverse cross, though there were 38 with broad leaves like a 
Cabbage, quite unlike either parent. 
Fig. 81. 44 were almost pure Kohl Rabi with coarse foliage. 
œ 82. 91 like the 94 in the reverse, i. e. Thousand-headed Kale foliage 
and slight bulb. 
