Inheritance of wide compatability in rice (Oryza sativa L.)

Abstract

The inter sub-specific sterility in rice has been the subject of numerous investigations in the past [1, 2, 3]. Ever since the possibility of overcoming hybrid sterility for indica-japonica hybrids was reported, many scientists have studied the F1 sterility of indica-japonica crosses to understand the cause of sterility and the nature of its inheritance. These findings led to the identification of some compatible types in both the groups, which produced fertile F1s when crossed to the other lines. These compatible types were designated as wide compatible varieties (WCVs) by Ikehashi and Araki [4].