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Inheritance of an auxin inducible peroxidase was investigated in a cross of two cultivars of oats (Arena sativa L.). Appearance of the IAA inducible peroxidase was characteristic of coleoptile sections in one cultivar but not in the other. F2 segregations produced a 3:1 (monohybrid) ratio with presence of the enzyme dominant to the null condition. A synthetic hormone (2,4-D) produced results analogous to those found with IAA.
Key Words: Indole-3-acetic acid 2,4-dichlorophenoxyacetic acid Coleoptile
2 Associate Professor of Genetics; Research Geneticist, Crops Research Division, Agricultural Research Service, USDA, and Associate Professor of Genetics; and Associate Professor of Crop Science.
Received for publication October 14, 1970.
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