STATISTICAL AND GENETICAL ANALYSIS OF YIELD AND SOME RELATED COMPONENTS IN FABA BEAN

Abstract: This investigation was carried out at New Valley Research Station during the three successive seasons 2010/11, 2011/12 and 2012/13 to study heterosis, inbreeding depression, heritability, nature of gene action in addition to determining the adequacy of genetic model controlling the genetic system for some economic traits. Six populations (P1, P2, F1, F2, Bc1 and Bc2) for two crosses were used in this study coming through three faba bean genotypes. These crosses were used in this study coming through three faba bean genotypes. These crosses were Nubaria1 x Misr1 and Giza716 x Misr1. Analysis of variance showed significant differences among the studied generations mean for all studied traits. Scaling test showed that most studied characters were significant indicating the presence of non- allelic interactions. Dominance gene effects were generally higher in magnitude than additive ones in the two crosses, indicating that dominant genes playing important role in the inheritance of such traits beside the additive one. The second cross (Giza716 x Misr1) gave a highly significant (aa ) with negative values for all studied traits except100-seed weight indicate that the materials used in this study have a decreasing alleles expression which makes improving it through selection in the early generations could not be effective. Significant positive inbreeding depression values were detected for most studied traits. The two crosses gave the high positive heterotic effect towards number of seeds/plant, seed yield and number of pods/plant with highest heritability in narrow sense and genetic advance, but the first cross (Nubaria1 x Misr1) has the highest values. Therefore, selection in these particular populations should be effective and satisfactory in the successful breeding purposes.
Publication year 2013
Pages 57 – 67
Organization Name
Author(s) from ARC
Publication Type Journal
↑