Corn Cob Hemicellulose Composition of Corn Isolines Involving Several Mutant Genes
1974
Helm, J. L. | Donnelly, B. J. | Glover, D. V.
All economically successful xylose production procedures require a carbohydrate source rich in hemicellulose and with a minimum content of other pentose sugars. Mature corn (Zea mays L.) cobs are a good source of hemicellulose. However, birchwood sulphite liquor has been a more economical raw material for xylose production in recent years. A strong pleiotropic or linkage relationship between genes used in today's specialty corn programs and increased hemicellulose content or improved composition would facilitate a program to purchase corn cobs of known genotype. The inbred line Oh43 and its isogenic counterparts homozygous for the recessive endosperm genes wx, su₁; du, su₂, o₂ and ae were tested tor hemicellulose content and composition. The results indicate no relationship between composition of mature cobs and any of the six recessive endosperm genes either in a pleiotropic or linkage sense. Additional visual marker genes should be evaluated so that corn cobs could be used as an economically suitable raw material in a xylose production program.
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