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Effect of IAA content on elongation and GA1 production in decapitated peas. Shown are changes in internode elongation (□) and endogenous GA1 level (○) of internode 6-7 tissue in response to increasing IAA. Where se bars are not visible, they lie within the dimensions of the symbol. Points represent means of eight replicates for elongation data and two replicates for hormone levels. Elongation data represent the mean difference between the initial and final lengths of internodes.
