Ethylene and auxin interaction in the control of adventitious rooting in Arabidopsis thaliana.

As expected, exogenous IBA greatly enhanced IAA and IBA levels in comparison with HF and, when combined with ACC, caused a further, and highly significant, enhancement in IAA levels, but a highly significant reduction in IBA levels ( Table 1 ), suggesting that the addition of ACC to exogenous IBA had favoured IBA-to-IAA conversion.

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