Vol. 9, Issue 7 (2020)

Author(s):
Kaushik Kumar Panigrahi, Ayesha Mohanty, Puranjaya Panigrahi, Purandar Mandal, Rojalin Pradhan and Bhabendra Baisakh

Abstract:
Generation mean analysis was employed in a cross between B-3-8-8 x Keonjhar Local of black gram to partition the mean into various components viz., additive, dominance and epistasis. Five generations viz., P₁, P₂, F₁, F₂ and F₃ of this cross were evaluated. The scaling tests were applied to the data to detect the presence or absence of non-allelic interactions. The results of the scaling test showed significant values of C & D scales for majority of traits under study. In several traits the additive gene effects were negative and significant additive gene effects were found for days to 50% flowering, days to maturity, plant height, number of clusters/plant, number of seeds/pod and yield/plant. Similarly, dominant gene effects were negative for days to 50% flowering, plant height, number of primary branches/plant, number of pods/plant. Significant positive dominant gene effects were found for pod length and yield/plant. Epistasis was present in all of the characters under study. Additive × additive gene effects were found for plant heights, number of primary branches /plant, number of clusters/plant and number of seeds/pod. Significant dominance × dominance gene interaction were found for days to maturity, number of primary branches/plant and number of clusters/plant.