Chapter 26.3, Problem 4RA

Summary Introduction

To demonstrate: The observation involved in a) a leaf from a mutant plant that was exposed to an inductive photoperiod was grafted with a wild-type plant, the resultant recipient plant produced flowers; b) the flowering is induced when a gene is coupled to an active promoter that in high levels expressed in the shoot apical meristem in presence of a photoperiodic stimulus.

Introduction: Photoperiodism is the ability of a plant to flower in response to changes in the lengths of day and night. The duration of day length plays a critical role in flowering process. Grafting is a vegetative reproduction process where the scion of one plant is combined with the stock of another plant.