FLOWER AND SEED COLOUR IN LUPINUS 313 

plants was earth-brown, in the violets rust-brown and in the 
whites white. | 
Cross 7 (tables 18—19). 2 
Bluish red flower colour, earth-brown seeds (RRBBvvFF) X white 
flowers and seeds (rrBBVVFF). 
F, gave blue flowers and earth-brown seeds 





F; 41 blue: 15 bluish red : 17 white (table 18) 
- expected: 41,06 13,69 18,25 
; 0,06 hist 1,25 
D/M ——= = pact Ss 
/ ree 0,01 3.34 0,39 3,00 0,34 
The numerical relations are good also in the F,-generation: 
Ps 100 blue : 30 bluish red : 42 white (table 19) 
expected: 96,75 32,25 43 
5 € 95 1 
D/M 3,2 = 0,50 2s — 0,44 = (fs 
6,51 5,12 5,68 
The mono-hybrid F;-numbers are satisfactory even if not quite as 
good as the above; they are: 
33 blue : 14 bluish red 
2,25 



expected: 35,25 LES D/M =— = 0,15 
[9] 
47 blue: 24 white 
6,25 
X 59,25 Msi IM ee 
che 10:35 D/N 3.05 1 
33 bluish red: 7 white 
expected: 30 R 10 D/M= cn 0,93 
Blue coloured F,-plants have given the following F;-families: 
2 constant blue:5 9:3:4-segregates : 2 blue and bluish red : 2 
blue and white 
expected: 1,22 4,88 2,44 2,442’ 
> bluish red F,-plants gave 4 constant bluish red and one 3:1-segre- 
gating family. The numbers to be expected are 1,66 constant and 3,34 
segregating families. The class distribution in F, shows, as seen, very 
poor correspondence with the expectation; the inversion of the values 
would give almost the ideal relations. The possibility of such an 
inversion is not improbable when the small numbers of families are 
considered. 7 white flowering plants gave as many constant white 
families. 
