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Comparison of endogenous gibberellins and response to applied gibberellin of some dwarf and tall wheat cultivars

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Summary

A number of dwarf wheat cultivars of the Norin 10 type were compared with several tall forms. Applied gibberellic acid markedly stimulated the growth of seedlings of the tall cultivars but not the growth of dwarf seedlings. Several other gibberellins were also inactive when tested with one dwarf cultivar. De-embryonated grains of all cultivars formed α-amylase in response to gibberellic acid. Gibberellic acid caused an increase in soluble carbohydrates in the leaves of the tall cultivars but not in those of the dwarfs.

Germinating grains, light-grown seedlings and developing stems of the dwarf cultivars contained more endogenous gibberellin-like activity than those of tall cultivars. It is suggested that the dwarf cultivars have a block to the utilisation of gibberellin in the shoot.

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  1. Agricultural Research Council Unit of Plant Physiology, Imperial College, S. W. 7, London

    Margaret Radley

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  1. Margaret Radley
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Radley, M. Comparison of endogenous gibberellins and response to applied gibberellin of some dwarf and tall wheat cultivars. Planta 92, 292–300 (1970). https://doi.org/10.1007/BF00385096

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  • DOI: https://doi.org/10.1007/BF00385096

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