Inheritance of rust resistance in lentil was studied based on analysis of 23 crosses involving 8 resistant and 10 susceptible genotypes. The crosses were made in three possible combinations, viz., resistant x susceptible, resistant x resistant and susceptible x susceptible types. The F2 segregation analysis of 14 out of 15 crosses involving resistant x susceptible parents revealed that resistance was governed by a single dominant gene. The F2 analysis of the cross Lens 4076 x DPL 21, revealed that resistance in the variety DPL 21 was under monogenic recessive control. Analysis of three crosses involving only resistant parents indicated that genotype Precoz has a dominant gene for resistance at different locus to that of Pant L 4. The crosses among susceptible parents revealed susceptibility as noncomplementative. The gene symbol Urf1 has been proposed for rust resistance in the genotypes Precoz and Lens 4603 and url2. in the varieties Pant L 4 and Lens 4147. The gene symbol ur6, Urf3 has been proposed in variety DPL 21, where resistance was conferred by monogenic recessive gene.
Lentil, inheritance, rust resistance, gene symbols
