Inheritance of stem termination in pigeon pea (Cajanus cajan (L.) Mill sp.)

Summary Inheritance studies on the stem termination in pigeon pea using F₁, F₂ and F₃ generations of two crosses between determinate and indeterminate lines suggested that two dominant genes with epistatic (inhibitory) interaction of one of them control the interminate growth habit. The gene symbols D. idid and ddIdId have been designated to the parental plants with determinate and indeterminate growth habits, respectively. The gene IdId was epistatic (inhibitory) to the gene D giving a ratio of 13 indeterminate: 3 determinate inthe F₂'s observed. F₃ segregation supported the proposed model on the mode of inheritance.