Induction of root tuberization in turnip under unfavourable environmental conditions

Tuberization of turnip roots was highly attenuated under unfavorable conditions [high temperature and long photoperiod]. Under these conditions, induction of the root tuberization was obtained, to various extents, by foliar treatment with alar, coumarin, cycloheximide, kinetin and maleic hydrazide. On the other hand, retardation of tuberization was observed in the plants treated with auxin [IAA], gibberellins [GA3] and coumarin