Related Experiment Video
Updated: May 2, 2026

Preparation of Intact Tissue for Microscopic Analysis of the Endosperm Cell Layer in Developing and Mature Arabidopsis Seeds
Published on: May 16, 2025
[Changes in gibberellin-like substances of lettuce seeds after light exposure]
1Botanisches Institut der Technischen Hochschule Darmstadt, Darmstadt, Deutschland.
Abstract:
The contents of gibberellin-like substances in lettuce seeds were determined. In darkness the seeds contain only small amounts of gibberellin-like substances, but upon illumination with near red light there is a sharp increase in the gibberellin content within one hour. It is concluded that lettuce seeds in darkness do not contain the amounts of gibberellin necessary for germination and that under the influence of light these amounts are provided.
More Related Videos
Related Concept Videos
Photoreceptors and Plant Responses to Light
Cell Signaling in Plants
Light Acquisition

