The Role of Hypocotyl and Roots in Photoperiodic Floral Induction of Chenopodium rubrum

Abstract

Hypocotyls and roots of Chenopodium rubrum were tested as possible receptors of photoperiodic signals inducing flowering. The hypocotyl was found to be responsive to such a signal. Its role as the locus of synthesis and/or the transport system of a florigenic stimulus is discussed. The roots respond to light/dark conditions solely by changing their growth rate but they do not seem to be involved in induction of flowering.

Flowering - photoperiodism - receptory organs