Figure 6.

Identification of the tomato ghost gene. a, Partial sequence of the PTOX cDNA showing a T insertion (boxed) in ghost plants when compared to wild-type and deduced amino acid sequences. The amino acid sequence created by the mutation is shown in italics. b, Cosegregation of the ghost recessive phenotype and the mutation in the PTOX genomic sequence from a heterozygous F₁ plant to the F₂ generation. Homozygous F₂ wild-type plants were discriminated from heterozygous plants in the F₃ generation.