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.