The investigation was conducted to assess the heterosis in respect to leaf yield and its component characters through 6 x 6 diallel mating design involving thirty hybrids and six parents in FCV tobacco during kharif 2016 at ZAHRS (Zonal Agricultural and Horticultural Research Station), College of Agriculture Shivamogga. | Heterosis for cured leaf yield in FCV Flue-Cured Virginia tobacco Nicotiana tabacum L.