Inheritance of Growth Habit and Time of Flowering in Beans, Phaseolus vulgaris L.1

Four true bush snap bean cultivars were hybridized with OSC410, a determinate, sprawling ‘Blue Lake’ bush breeding line. Observed segregation data fit a single gene hypothesis with the sprawling habit completely dominant to true bush type. Crosses of OSC410 to 2 indeterminate cultivars provided evidence for 2 additional patterns of inheritance. When ‘Polaris’ was used as the indeterminate parent, segregation ratios indicated that indeterminance was dominant and controlled by a single gene. Epistasis of 2 genes was suggested from the cross Mexico 80R' (normal) × OSC410, with indeterminance dominant.