Pelletization of seeds of Raphanus sativus L. cv. redondo gigante with graphite for germination under water stress conditions

The effect of water stress on germination of radish seeds is dependent on t he presence of light. The effect of pelletization of radish seeds with powd ered graphite on the tolerance to water stress under light was analysed. Wh ite light and far-red lights were filtered by graphite increasing slightly the tolerance of pelleted seeds to water stress of - 0.77MPa. Although red light also inhibited seed germination the graphite had no effect. We propos e the pelletization of seeds of Raphanus sativus, at least in cv redondo gi gante with graphite as a pratice before planting to increase the tolerance to water stress.