
| 
| 

FLOWER AND SEED COLOUR IN LUPINUS 321 

coupling the corners and the middle parts of the periphery are compa- 
n ; 
red, and the relation between these groups is 5 as said. before. Other 
combinations, naturally, may be made within the F,-families in order 
to determine the relative gametic ratio, but this is the most suitable 
partly because of its simplicity, partly because of he fact that only 
the largest groups are used, which insure the most reliable results. 
Furthermore, the method makes use of families resulting from coup- 
ling as well as from repulsion at the same time. A summary of the 
TABLE 3. 
List of the number of families of different segregating types 
in F, and F, from cross 9. 
















| | 
aa 2 Colour of | Ki : à she we = > © e | 
t Be oy <inds of phenotypes in the families repulsion 4n? | 8n | = 5 
sag BEFAND ratios | © 5 
| Blue TS PS RE ee ot Een "Constant }, =!) — Pei 
» - |Blue+ violet + bl. red + pure red | Coupling | — | — | 6 | 
| » » Poh » » Repulsion | 43 | — | — 
» Bine-Eyiolel ern... Sees aed — | 18 | — 
Repul- | » NOR AE ISD POU CNE ER ea | Se IL RME, 
D MOLE Violet... te. Constant | 28 — | — | 
» | Violet + pure BEN... iden. oe eee | 321 NN 
Elster) Blum red en. 00... «a= ca. I ee | = 
» "Bluish red’ pure red... | 3) Sil — | 13 — | 
Rare red | Pure Ted. se et TERN const] = au 
| Total | 103 | 68 | 9 
| Be =) Bige 5e 000: 2230064000 nase tite Constant 6 | — | — 
» | Blue + violet + bl. red + pure red; Coupling | 
| » » » » » Repulsion| — | — 1 
€ » 25 LES Oe yt 6 | Uy PCR tler Ee 354 = A 
Coup- » Blas? blivishered ee 3 na | 
ling Violet ae Be oi Constant — | = 1 
» Miel pure Ted ga, 5.5250. nenne il — 1 | — | 
Bhnish FORME Ted... 2. ee eee ee Constant le 4 
» Bluish red + pure red ......:.........*. | 3:1 — 1 | — 
| Pare TED EME Mer une ne ER. Constant Bil — | 
Total [20 8 8 | 
General total | 1237 M 



constant + coupling 6-9 
Da 
! Fictitious value = 3 — (see text) 
