Inheritance of flowering time, yield and stolon development in Glycine javanica

Abstract

Seven traits were studied in seven hybrids of G. javanica, and their progeny. No hybrid vigour was found in the F, for flowering time, stolon number, or per cent stolons rooted, but hybrid vigour was found for all other traits, and was followed by inbreeding depression in the F2. All traits were polygenically controlled and heritability estimates ranged from 39 to 77 per cent. Genotypic correlations indicated that early flowering, high yield and good stolon development could be combined into one variety by means of a suitable breeding program. A delay in planting date caused a delay in flowering, but mainly in those families which were normally early flowering.