Gene actions for hectoliter mass in sunflower (helianthus annuus l)

Abstract

Effects of additive and dominant genes and their interactions on the inheritance of hectoliter weight in 10 sunflower hybrids developed by crossing five inbred lines derived from the synthetic NS-S-1 were analyzed in 2001 and 2002. The linkage among the expected progeny means was tested using the scaling tests method (Mather, 1949), while the estimates of gene effects and mode of inheritance were made by generation mean analysis (Mather and Jinks, 1982). The additive-dominant model was not adequate for all crosses from the two years. In the hybrids for which the model was not adequate, epistatic gene effects were important in the inheritance of the studied characters.