Inheritance of Yield, Yield Components, and Fall-Fruiting Habit in Red Raspberry Diallel Crosses

From a series of 4 × 4 diallel crosses in the red raspberry (Rubus idaeus L.), it was determined that inheritance was predominantly additive for fruit yield and weight, fall-fruiting habit, day of flowering and total soluble solid content. However, it was mainly nonadditive for numbers of cane branches and laterals. Inbreeding depression was found for the yield of seedlings from sib-crosses within individual diallels. Reciprocal differences were noted for some characters.