Genetic modification of plants is a controversial area of biotechnology. All such experiments in plants begin with establishing plant cells in culture. This involves de-differentiating plant cells to form plant 'stem cells'. In this experiment, students establish cell cultures of African violets from leaves. They then use plant growth regulators to encourage root growth from the cultured cells, and produce a mature plant.

• For 10 lab groups
• Complete in 60 minutes plus several weeks for growth

Also required: Healthy African violet (Saintpaulia ionantha).