Table 38 Concluded. — Comparative histological development of elemental strains and their 
first generation hybrids. Hogue'’ s Yellow Dent corn. 1916. 
Corn Investigations 99 
JB0T 1 
Average 
width of 
epidermal 
cell, lower 
and upper 
epidermis 
Microns 
(14) 
34.4 
34.0 
34.2 
34.2 
1.000 
34.4 
31.0 
32.7 
32.7 
1.000 
33.5 
34.0 
33.7 
35.3 
1.047 
34.0 
31.0 
32.5 
33.9 
1.043 
36.3 
31.0 
33.6 
35.1 
1.045 
1.045 
No. 
of 
vascular 
bundles 
in one 
cm. 
(13) 
62.6 
76.1 
69.3 
67.4 
0.973 
62.6 
70.6 
66.6 
63.7 
0.956 
78.5 
76.1 
77.3 
78.1 
1.010 
76.1 
70.6 
73.3 
70.6 
0.963 
67.5 
70.6 
69.0 
55.8 
0.809 
0.923 
Average 
thickness 
of upper 
and 
lower 
epidermis 
Microns 
(12) 
28.6 
34.8 
31.7 
32.6 
1.028 
28.6 
26.9 
27.7 
29.8 
1.076 
33.3 
34.8 
34.0 
34.0 
1.000 
34.8 
26.9 
30.8 
31.8 
1.032 
29.4 
26.9 
28.1 
30.0 
1.068 
1.043 
Thickness 
of leaf 
Microns 
(ID 
209.5 
207.9 
208.7 
230.3 
1.103 
209.5 
193.7 
201.6 
236.2 
1.172 
208.1 
207.0 
208.0 
218.5 
1.050 
207.9 
193.7 
200.8 
222.4 
1.108 
193.8 
193.7 
193.7 
226.8 
1.171 
1.137 
Stalk 
Length 
of 
pith cell 
M icrons 
(10) 
191.4 
163.2 
177.3 
220.1 
1.241 
191.4 
154.5 
172.9 
179.4 
1.038 
162.6 
163.2 
162.9 
161.6 
0.992 
163.2 
154.5 
158.8 
194.2 
1.223 
154.5 
154.2 
154.3 
155.2 
1.006 
1.101 
Diameter 
of one 
pith cell 
Microns 
(9) 
108.0 
107.9 
107.9 
110.3 
1.022 
108.0 
120.9 
114.4 
137.2 
1.199 
111.0 
107.9 
109.4 
117.4 
1.073 
107.9 
120.9 
114.4 
113.4 
0.991 
120.9 
105.8 
113.3 
119.3 
1.053 
1.077 
No. 
of 
pith 
cells 
in 
diameter 
(8) 
177.3 
135.8 
156.5 
229.3 
1.465 
177.3 
185.7 
181.5 
232.0 
1.278 
145.4 
135.9 
140.6 
186.0 
1.323 
135.9 
185.7 
160.8 
237.9 
1.480 
185.7 
154.6 
170.1 
215.9 
1.269 
1.380 
Diameter 
of 
bundle 
Microns 
(7) 
327.0 
279.3 
303.1 
319.0 
1.052 
327.0 
305.4 
316.2 
340.2 
1.076 
279.5 
279.2 
279.3 
297.6 
1.066 
279.2 
305.4 
292.3 
328.7 
1.125 
305.4 
309.9 
307.6 
351.9 
1.144 
1.155 
No. 
of 
bundles 
in one 
cm. 
diameter 
(6) 
2.84 
2.92 
2.88 
2.43 
0.844 
2.84 
2.55 
2.69 
1.93 
0.717 
2.34 
2.92 
2.63 
2.16 
0.821 
2.92 
2.55 
2.73 
2.33 
0.854 
2.55 
3.16 
2.85 
2.52 
0.884 
0.814 
No. 
of 
bundles 
in one 
diameter 
U5(X CO 
5.2 
6.6 
1.269 
5.9 
6.2 
6.0 
6.6 
1.100 
4.1 
4.6 
4.3 
5.0 
1.163 
4.6 
6.2 
5.4 
6.9 
1.278 
6.2 
5.8 
6.0 
7.2 
1.200 
1.208 
No. 
of 
bundles 
in one 
sq. cm. 
(4) 
145.2 
237.0 
191.1 
112.7 
0.590 
145.2 
135.7 
140.4 
93.5 
0.666 
161.8 
237.0 
199.4 
132.2 
0.663 
237.0 
135.7 
186.3 
111.3 
0.597 
135.7 
174.6 
155.1 
116.8 
0.753 
0.661 
No. 
of 
bundles 
in 
stalk 
(3) 
510 
466 
488 
685 
1.404 
510 
629 
569 
852 
1.497 
373 
466 
419 
560 
1.337 
466 
629 
547 
759 
1.388 
629 
449 
539 
734 
1.362 
1.448 
Diameter 
of 
stalk 
Mm. 
(2) 
21.2 
16.1 
o 1 M 
o I © 
©©O frlCO 
00 t-' t 4 rHTj! © 
NN 03C0 rii-t 
1 6.9 
23.3 
1.379 
16.1 
24.3 
20.2 
29.6 
1.465 - 
24.3 
18.0 
21.1 
28.3 
1.341 
1.461 
Pure line 
No. 
(1) 
5 
10 
• 
* . * * * 
K ^ ’ ’ 
m ^ 
525 - 
• . • • * 1 
• . * * * | 
O . . . I 
• • • 
N *2 I 
1 
A verage 
8X10 Fi 
Ratio 
JO 
12 
A verage 
10 X 12 Fi 
Ratio. 
12 
1 
Average 
12 X 1 Fi 
Ratio 
Av. of ratios. . . 
