Results of first inbreeding three corn varieties :-

Type of Variations Found Varieties Total
"Amarello"
(688 ear-rows)
"Crystal"
(1052 ear-rows)
"Amparo"
(72 ear-rows)
(1812 ear-rows)
No.   % No.   % No.   % No.   %
                 
White seedlings 12 1.74 60 5.70 2 2.8 74 4.08
Yellow seedlings 5 0.73 5 0.47 0   10 0.55
Transv. striped lvs. 5 0.73 12 1.14 0   17 0.93
Light green lvs. 19 2.76 6 0.57 1 1.01 26 1.43
Striped leaves 15 2.18 9 0.85 1 1.4 25 1.37
Concentric spots 1 0.14            
Ragged (?) 1 0.14 11 1.04 0   12 0.66
Rolled leaves 6 0.87 15 1.42 1 1.4 22 1.21
Crinkly 6 0.87 0   1 1.4 7 0.36
Oily spots 4 0.58 5 0.47 1 1.4 10 0.55
Narrow leaves 0   2 0.19 0   2 0.11
Hairy sheath 0   2 0.19        
Dwarfs 5 0.73 5 0.47 1 1.4 11 0.60
Abnormal sex distribution 25 3.63 8 0.76 2 2.8 35 1.93
Ramosa (?) 0   1 0.09 0   1 0.05
Branched ear 4 0.58 4 0.38 0      

 

In 1932 we selfed about 3,000 plants of these three varieties. Among the selfed ears we found a great many with defective endosperm seeds, one case of "premature germination" (3:1), one with semitunicate grains, besides a great number of diversily diseased ears which were eliminated. From these 3,000 ears we selected only 1812 for further planting; the variations found among these ear-rows are given in the above table.