Table I.

Phenotypes exhibited by wild-type plants treated with the auxin transport inhibitor TIBA

TIBAControl
no.
Agravitropic roots280
Dwarfism254
Twisted leaves/stem150
Aberrant ligule30
Feiled to germinate52
Severe growth arrest31

Seventy-six plants were grown, half on control medium and half on medium containing TIBA. The number of plants showing specific phenotypes is indicated.