Inheritance of yield contributing characters in pigeonpea

Genetic analysis of seed yield and other important yield traits in pigeonpea genotypes was carried out using joint scaling test to determine epistasis and genetic parameters m,d,h,i,j and l. Sixgenerations of (P₁,P₂,BC₁,BC₂,F₁ and F₂) of two cross combinations of pigeonpea (PRG 100 x ICPL 87119 and LRG 30 x ICP 8863) were studied at Agricultural Research Station, Tandur during kharif 2007. All the generations of each cross combinations were evaluated in a randomized block design with three replications. The mean of six generations were subjected to joint scaling test to determine epistasis and genetic parameters m,d,h,i,j and l and were estimated through three and six parameter model. Seed yield and major yield contributing parameters showed the significance of both additive, dominance and epistatic interactions. Therefore, reciprocal recurrent selection or diallel selective mating are suggested to improve the yield potential in pigeonpea.