Response of Cultured Embryos of Phaseolus vulgaris and Hordeum vulgare to Farnesol

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Abstract
Excised embryos of Phaseolus vulgaris incubated in a medium containing 10 mg dm−3 farnesol showed enhanced root growth whereas the leaves remained rudimentary At lower concentrations of exogenous farnesol normal leaf development occurred and root growth was comparable to untreated cultures. Enhanced root growth also occurred when excised embryos of Hordeum vulgare were treated with farnesol but only at 10 mg dm−3 and this treatment did not prevent leaf growth X-ray micro-probe analysis of leaves revealed an increased phosphorus content in P vulgaris and a decreased sulphur content in H vulgare in comparison to untreated plants.