Genetics of flowering response in mung bean

Inheritance of days to flowering and photo-sensitiveness was studied in crosses between a late and photo-sensitive variety and five photo-insensitive varieties of mung bean, three of which were early and two medium in flowering. The F₁’s of all the five crosses flowered as early as the early or medium parent in both summer and kharif seasons indicating dominance of earliness and of photoinsensitivity. The F₂ segregation of the early × late and medium × late crosses gave good fit to a 13: 3 ratio; thus, digenic control involving recessive suppression is indicated, for days to flower.