Oilseeds Section Department of Plant Breeding and Genetics, Punjab Agricultural University, Ludhiana-141004
National Symposium on “Plant Pathology in the Changing Global Scenario” held at National Bureau of Plant Genetic Resources, New Delhi on February 27–28, 2009
Linseed is an important oilseed crop grown for its fibre and oil for industrial, medicinal and nutritional purpose. It is cultivated in north and central India, but productivity level are quite low (392 kg/ha) as compared to those at global level (859.3 kg/ha) due to biotic and abiotic constrains. Among diseases Alternaria blight caused by Alternaria lini is very damaging and yield losses can vary from 20–60 per cent. A total of 192 entries were evaluated for their reaction to alternaria blight during Rabi 2007–08 under aided disease conditions in a randomized complete design with three replications. One row of susceptible variety Chambel was sown after every ten test entries. Disease severity was recorded on a 0–5 scale. Among the genotypes evaluated sixteen genotypes (RSJ-3, EC-397757, EC-399085, R-849, ICAR-3, FR-1, FR-13, ICA-32/64, LCK-9414, LCK-9420, LCK-9436, RL-56-6-2, RL-925, RL-966, RSJ-2 and NL-97) were free from disease. Sixteen entries namely LMH-90-2, LCK-9426, RL-43-5, RLC-46, RL-59, SLS-9, RSJ-6, RSJ-7, Ireland(Tikamgarh), EC-397752, EC-397755, UP-82, KL-43, A-9-2-1, A-16-1-1 and A-32-2 were resistant. Whereas entries with moderate resistance were LMH-16-5, NL-82, NL-93, RL-906, RL-993, RLC-U-3, RLC-55, RLC-57, RLC-60, Neelum, EC-399086, EC-397760, RSJ-1, RSJ-3, RSJ-4, RSJ-5, Papsenda, Tikamgarh chanser, Tikamgarh trans local, UP-1-15, MS-1, MS-14, BSL-11, 4/47-2/1–2, 5/1, 5/3, T-397, Raju-3, NP-Hyb-4, NP-Hyb-8, NP-Hyb-42, Kiran, NP(RR)-160, LC-73, LC-207, KL-122, KL-160, A-21-2-2, A-90-2, Afg-14, Afg-8, FR-4, CH-490(1–148). Rest of genotypes were susceptible to alternaria blight. The genotypes with resistance can be used in the breeding programme.
