Effect of Multiple Aleurone Layers on the Protein and Amino Acid Content of Maize Endosperm
1974
Nelson, Oliver | Chang, Ming Tu
The data from four F₂ progenies from a cross of a normal endosperm, multiple aleurone maize (Zea mays L.) line with an o₂/o₂ single aleurone line were heterogeneous but do not disprove the hypothesis that the multiple aleurone phenotype is conditioned by a single dominant factor. This factor segregated independently of opaque-2. In non-opaque seeds, the effect of multiple aleurone layers on protein content of the endosperm or content of any amino acid was negligible. In o₂/o₂/o₂ endosperms, the presence of multiple aleurone layers as compared to single aleurone layers increased slightly the content of all the amino acids that are increased in o₂/o₂/o₂ endosperms as compared with O₂/—/— endosperms. Most of the amino acids that were lower in o₂/o₂/o₂ endosperms relative to O₂/—/— endosperms were decreased further by the presence of multiple aleurone layers. We conclude that the multiple aleurone layer factor should be useful in breeding programs designed to utilize the opaque-2 mutant.
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