807 
The red leaf margin. 
[t was shown in a previous paper ') that the difference between 
the variety of Canna indica with a red leaf margin and that with 
entirely green leaves is one of three hereditary factors. The ob- 
served numbers of plants with and without red margin, viz. 95 red 
as against 127 green and 83 with red edge as against 112 green, 
agreed very well with the ratio 27: 37 which require, for 222 and 
195 individuals respectively 93.6 red: 128.3 green and 82.3 red: 
112.7 green. In addition, however, the ratios 3: 1 (45 red: 17 green) 
and 9: 7 (29 red: 22 green) were found among the offspring of 
individuals, which must be represented genotypically by AabbGe, 
and this points to the coupling of all three factors or at least of 
two of them. Furthermore all kinds of ratios were observed which 
defy explanation, as for instance, 63 red: 9 green. 
The F2 of the cross C. glauca X indica with red leaf margin 
were sown in seven batches. Segregation according to three inde- 
pendent characters, therefore according to 27: 37, did not occur, 
but twice the ratio 9:7 was observed with very slight deviations 
(nos. 5 and 6) and in three batches (nos. 3, 4 and 7) the ratio 1: 1 
was unmistakable; in the remaining two lots the ratio approximates 
most closely to 9:7, but still differs from it rather considerably. 
From these two taken together the deviation is small (nos. 1 and 2) 
See table I. 
TABLE I. Segregation of F 2 into individuals with and without a red leaf margin 
Hi Re ane Se Ml Rr. Nee ran ta Deen eat: 
: ‚Number Number With red ‚by segregation 
Sowing | Date | of seeds | of seedlings margin Green | Aesorids to 
| | 9: 
: 
1 3—9—' 14 200. | 158 83 15 127,1 : 98,9 
| (actually 
2 28—7T— 15 92 er A05 43 25 126 : 100) 
3 19-815 - 223 | 202 | 101 101 
4 29—9 —15 15 60 30 30 
a 15—12—715 260 298 132 101 131,1 : 101,9 
6 30—3—’16 267 232 129 103 130,5 : 101,5 
7 17—5—’16 263 215 107 108 
Motalie.: 7: 4 1980 1168 625 543 
!) Honine, J. A., Kreuzungsversuche mit Canna-\Varietäten. Rec. d. trav. bot. 
Néerl. Vol. XII, p. 1—26, 1915. 
