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This article in AJ

  1. Vol. 66 No. 5, p. 708-709
    Received: Oct 11, 1973

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Corn Cob Hemicellulose Composition of Corn Isolines Involving Several Mutant Genes1

  1. J. L. Helm,
  2. B. J. Donnelly and
  3. D. V. Glover2



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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