Regulation of the activity of alcohol dehydrogenase isozymes during the development of the maize kernel |
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Authors: | Y Efron |
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Institution: | (1) Department of Field and Vegetable Crops Faculty of Agriculture, The Hebrew University, Rehovot, Israel |
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Abstract: | Summary The relative activities of alcohol dehydrogenase isozymes have been studied during the development of the endosperm and scutellum of heterozygous Adh
1
F
/Adh
1
S
maize kernels. The products of the Adh
1
F
allele are found earlier than the products of the Adh
1
S
allele in both the scutellum and the endosperm. A second gene (Adh
r
)which controlsthe activity level of ADH is active in the scutellum only. The Adh
r
N
allele specifies increase in the relative activity of the Adh
1
S
products from 26 to 38 days after pollination. This increase is prevented by the Adh
r
L
allele which is dominant. These results ar discussed on the basis of the limited factor hypothesis proposed recently by Schwartz (1971) for the regulation of the Adh
1gene in maize. |
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Keywords: | |
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