Figure 1.

Fruit color development and genetic analysis of oft3. a Fruit color development. The tomato inbred lines oft3, the tangerine (t) mutant TB0017, and the r mutant TB0040 were originally developed in our lab. Fruit color (top), cross-sections (middle) and longitudinal sections (bottom) of these lines are shown at three different ripening stages. DPA: days post-anthesis. b Genetic analysis of oft3 conducted in the F₂ and BC₁F₁ populations. Emasculated oft3 flowers were pollinated using AC (WT) pollen to produce the F₁ generation. The F₂ population was obtained from F₁ self-pollinated plants, and the BC₁F₁ population was obtained by backcrossing using oft3 as a recurrent parent. The fruit color of each plant in the F₂ and BC₁F₁ populations was confirmed when the fruit ripened.