PLATE 4 
Effects of the modified hot-water treatment on the germination and seedling 
development of Red May (Michigan Amber) wheat (seed lot T in Table VII) 
when threshed by hand and threshed by machine. One hundred seeds sown 
per flat. 
A. —Hand-threshed seed, untreated. Germination 99 per cent. 
B. —Hand-threshed seed, treated. Germination 100 per cent. Note retardation. 
C. —Machine-threshed seed, untreated. Germination 99 per cent. 
D. —Machine-threshed seed, treated. Germination 68 per cent when photo¬ 
graphed, but final germination 77 per cent. 
Effects of the modified hot-water treatment on the germination and seedling 
development of Dicklow wheat (seed lot W in Table VII) when threshed by hand 
and threshed by machine. One hundred seeds sown per flat. 
E. —Hand-threshed seed, untreated. Germination 100 per cent. 
F. —Hand-threshed seed, treated. Germination 97 per cent. Note retardation, 
G. —Machine-threshed seed, untreated. Germination 84 per cent. 
H. —Machine-threshed seed, treated. Germination 15 per cent when photo¬ 
graphed, but final germination 34 per cent. 
