Generation mean analysis for quality characters in yard long bean (Vigna unguiculata subsp. sesquipedalis (L.) Verdcourt)

Generation mean analysis in yard long bean was undertaken to estimate the gene action operating in the inheritance of quality characters pod protein (%) and keeping quality (% weight loss). Six basic generations viz., P₁, P₂, F₁, F₂, BC₁ and BC₂ of two crosses, namely Kakkamoola Local x Githika (cross 1) and Kakkamoola Local x Vellayani Jyothika (cross 2) were studied. Significance of scaling test revealed the presence of epistasis for characters under investigation. The predominance of dominance component for the characters under study indicates the improvement of the traits through heterosis breeding.