A pair of genes influencing the intensity of yellow
endosperm color was reported in the Maize News Letter for January 31, 1944.
Segregations of 3 dark yellow to 1 lemon yellow were obtained in selfed
progenies. The gene in question was closely linked with opaque‑2 in
chromosome 7. No symbol was suggested. The situation with regard to the genes
for endosperm color is not entirely clear. Five genes have been numbered and
one or two additional genes apparently are known. It is suggested that the pair
of genes discussed here be designated as Y8 y8.
During the past season data were obtained on a
three-point backcross test involving the cross
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+
+ + |
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o2 y8 v5 |
These data are reported below:
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Recombinations |
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Parental combinations |
Region 1 |
Region 2 |
Region 1 & 2 |
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404 374 |
6 11 |
21 23 |
0 0 |
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778 |
17 |
44 |
0 |
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2.0% |
5.2% |
0.0 |
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The gene order indicated is o2 - 2.0% - y8 - 5.2% - v5.
Merle T. Jenkins