SHULL: DUPLICATION OF A LEAF-LOBE FACTOR 431 
TABLE I (continued) 
Pedigree Numbers | 3 | rhom- ; | ome, i * 
a heter idea | tenuis Ratio 
One Serger er ae eee | ees 
13218 15373 ——= || aitels, — Tae 22550508 
| X |14365 |15374 | = 48 — 8 |6.00:1 
| 1376 15375 = 85 = NOM 5 -3ite oL 
13222 BE a | | ‘ 
x 14368 | 5382 | 3) 240m, he OL® 2,501.1 
1376 [15383 | 184 | 68.°)) 34) | 138° 13:50) > 1 
Berlin, Germany oa | a 
1322 | | 
5225 a 15385 | 2 9 | 1 | 2 |3.67:1 
ZED 15387 | Tn 5 6 5 
13226 15394 =| LS = 355.) 3:o6tne 
X 14373 15395 =) | wea oe My 7I | 3.3021 
1376 15396 | —| 246 | — | 80 | 3.08:1 
050 
DX 0688 06212) 336 71 109 20) 3.133 
059 
eS. 0689 06196 103 BA | a7 | TAL | 2260.2 1 
056 06197 | 1177 | 315 | 344 | 79 |3-29:1 
11498 8 8 2 6 E 
Landau, Germany x pone mere eeay p | 3 ale et : 
11425 12348 13189 20 Sel On 183-29 sk 
11500 13190 — 13 — Bhs aieer 
X 112349 |13191 =) Ls) = 2° |19:00 92/17 
11429 13192 = t aELO — AZ) | 2:Aqe 
1150 | 
a eee 13200 fi 25 | oy 14 ee I 
11425 13201 59 | PG ish i ea 
Vicenza, Italy — 140 |15586| 43 5 9 | — |5.03:1 
13239 1542C al SO = Gi Osa eon 
Peking, China xX 114385 |15421 ikea ake — |} 13 |2.54:1 
| 1376 15422 = 25 = A O:25071 
All of the cases of monomeric B lobes which I have thus far demon- 
strated in wild plants are shown in Table 1. 
2 These families may possibly have a duplication of the B factor, but the evidence 
for such duplication is much less adequate than is the evidence for the occurrence’ 
of a 3: I ratio in one or more F2 families from these same crosses. 
It should be 
observed however, that both 15:1 and 3: 1 ratios might occur in different F, 
families from the same cross, since the original wild plant used in the cross might 
have been homozygous for one B factor and heterozygous for the other. 
