Techniques which reduce the computational burden of the IFFTFFT section of a DSL data transmissionreception apparatus, taking into account the nature of conventional IFFTFFT algorithms. The invention relates to a method of using such mono- and multi-substituted auxinic analogues of IAA to affect growth, regeneration or transformation in monocotyledonous and dicotyledonous plants, as well as in transgenic plant tissues. The gate electrode and the layer of gate oxide are patterned.