Genetic studies of a mosaic leaf mutant: causing somatic instability in cotton.

A mutant designated mosaic leaf arose in the progeny of a Gossypium hirsutum introduction. Genetic studies of the inheritance of this trait showed that it was controlled by one gene pair with mosaic leaf recessive to normal green. The gene symbol ml was assigned to this mutant. Somatic cells in homozygous ml ml plants were unstable, and the pale color of certain cells resulted in the erratic appearance of mosaic areas on the leaves.