184 KARL B. KRISTOFFERSON 
the presence of the red factor R has an increasing effect upon the 
stem-height. 
The result of the light-blue factor on the stem-height is to be 
seen in tables 8 and 12. The differences in stem-height between the 
light-blue and white give (table 8) the value 25 cm.+ 2,46, and 
TABLE 10. The variation of the height of- the stem in Ds. 
D,-plants BBRr. 
Height of the stem in cm. 
Flower colour. Total | Mean 
50 60 70 
Darkblue «3.2. 260 X 2 | 13 | 14 | 5 | 39 | 62: 
Lighi-bine ses: 4511}, 4 | 2 | = 10 53,0 
TABLE 11. The variation of the height of,the stem in Ds. 
D.-plants bbRr. 
| Flower | Height of the stem in cm. Tota | Mees Betti 
colour. 50 60 70 80 90 100 e(M) 
| RE 
Red 1 | BON 15 | 61 | 73 | 42 | 6 | 200 | 827 | 0,73 
White | 2 | 7 | 12 | 25 | 14 | 6, — | 66 | 741 | im 
| | 
TABLE 12. The variation of the height of the stem in Ds. 
D,-plants Bbrr. 
Height of the stem in cm. Standard 
Flower colour. | Total | Mean | error 
50 60 70 e(M) 
Bight-bhwe 2.24: 18 | 30 | 21 | 3 | 92 | 563 | 10 
Witte. nt 7 | 13 | 8 | = 28 55,4. "#46 
D:e(D)=1,01; from table 12 the difference 0,9 cm. +-1,7, and 
D:e(D)=0,;2 is obtained. Thus the differences fall whithin the 
allowed statistical range, which shows that the factor B has no in- 
creasing effect on the stem-height. 
The possibility is at hand, of course, that the light-blue factor 
