38 Nebraska Experiment fetation Research Bulletin 19 
Morphological characters were recorded for all twelve types 
grown in each of the five tests. Histological measurements 
were made for the twelve types grown only in the most extreme 
regions, namely Lancaster County and Kimball County. 
MORPHOLOGICAL CHARACTERS 
The same general methods were employed and the same 
notes taken as in the previous investigation, (p. 22). The 
tabulated data for each type grown in each locality are the 
mean results for ten successive plants in a representative part 
of each plat. The detailed results are recorded in Tables 17 
to 21, and are summarized in Tables 22 to 25. A careful study 
of the tables will show the relative growths made b} r (1) corn 
of the same source when grown in different regions, and (2) 
corn of different sources when grown in single locality. 
In order to avoid a too tedious discussion, the reader is 
referred for most comparisons directly to the tables, and es- 
pecially Tables 22 to 25. Only a few of the possible compari- 
sons will be brought out in this discussion. 
Native Lancaster County corn grew only 80 per cent as tall 
when grown in Kimball County as when grown in Lancaster 
County. Other relative values for Kimball County grown corn 
were: Height of ear, 52 per cent; leaf area, 78 per cent; stover 
weight, 62 per cent; ear weight, 1 per cent; total dry matter, 
26 per cent; grain weight, 0.8 per cent; shelling percentage, 
63; amount of leaf area per unit dry matter, 300 per cent; length 
of ear, 10 per cent; and ear circumference, 44 per cent. This 
illustrates the reduction in vegetative growth and even more 
extreme grain reduction when corn is moved to a less favorable 
region. 
On the other hand, when corn is moved to a more favorable 
region, its vegetative growth and grain production are con- 
siderably increased. To illustrate, when native Kimball County 
corn was grown both at home and in Lancaster County the ratios 
of the latter to the former were: Plant height, 129 per cent; 
ear height. 154 per cent; leaf area, 140 per cent; stover weight, 
161 per cent; ear weight, 135 per cent; total dry matter, 146 
per cent: grain weight, 131 per cent; shelling percentage, 97; 
amount of leaf area per unit dry matter, 96 per cent; ear length, 
113 per cent; and ear circumference, 107 per cent. 
When home grown seed Avas planted in these two extreme 
localities, the relative values based on Lancaster County plants 
as 100 per cent, were as folloAA's: Stalk height, 100 and 56; ear 
height, 100 and 26; leaf area, 100 and 30; stoA r er weight, 100 
and 35; ear weight, 100 and 33: total dry matter, 100 and 31: 
