KARNAL BUNT RESISTANCE IN WHEAT-BARLEY ADDITION LINES

Wheat-barley addition lines 7H, 2H, 3H, 4H, 6H and 5H having barley ch romosomes 1, 2, 3, 4, 6 and 7, respectively, were evaluated for resist ance to karnal bunt (Neovossia indica) using syringe inoculation of sp oridial suspensions of N. indica under glass-house conditions. Additio n lines 4H and 7H were rated as highly resistant and resistant, respec tively, with zero and 3.22 coefficients of infection compared to 'Chin ese Spring' which had a 23.5 coefficient of infection. All the six add ition lines were found to be susceptible to specific virulences of Puc cinia recondita tritici and P. striiformis.