Genetics of growth habit in horse gram [Macrotyloma uniflorum (Lam.) Verdc.]

Growth habit is a plant architectural trait in grain legumes with no exception of horse gram [Macrotyloma uniflorum (Lam.) Verdc.]. Determinacy and indeterminacy are the two types growth habits reported gram. Relative advantages depend on production systems to which cultivars targeted. Dependable information genetics provide clues for adopting most appropriate selection strategy breed high yielding varieties desired habit. Taking cues from past studies, we hypothesize that controlled by genes displaying inhibitory epistasis dominant over determinacy. To test this hypothesis, monitored inheritance F1, F2 F3 generations derived crosses involving parents differing Contrary our determinate F1s both suggested dominance determinacy indeterminacy. A good fit observed segregation plants hypothesized ratio 13 determinate: 3 indeterminate plants, besides confirming determinacy, classical digenic epistatic control These results were further confirmed generation based goodness between numbers segregating those expected 49 15 plants. best knowledge, first report