Analysis of the autonomy of maize dwarf 1 action in genetic mosaics.
Genetic mosaic maize plants that contained dwarf1 sectors in otherwise normal plants were analyzed. The analysis of dwarf1 sector growth relative to the surrounding wild-type tissue should test the hypothesis that Dwarf1 controls the production of a diffusible factor. Maize dwarf1 sectors did not show altered growth relative to the surrounding tissue, indicating that Dwarf1 controls the production of a diffusible factor. As Dwarf1 has been proposed to control the conversion of GA20 to biologically active GA1, these results suggest that GA, itself is the diffusible factor.
Department of Plant Biology, University of California, Berkeley.
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RG
Winkler
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M
Freeling
D017343:Genes, Plant; D005838:Genotype; D009030:Mosaicism; D003313:Zea mays / Q000235:genetics* / Q000254:growth & development / Q000528:radiation effects