Screening of rice germplasm against blast disease caused by Pyricularia oryzae Cav

Khan, J.A.; Jamil, F.F.; Cheema, A.A.; Gill, M.A.

Integrated plant disease management Proceedings of 3rd National Conference of Plant Pathology, NARC, Islamabad, 1-3 Oct 2001: 86-89


Accession: 003926384

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Pakistan is the third largest exporter of rice in the world and earns ~500 million US dollars annually. Pakistani basmati rice is famous in the world for its particular aroma. Most of the basmati cultivars cultivated in the country are susceptible to blast. The only feasible and economical way of controlling diseases is the use of resistant rice cultivars. In view of the importance of genetic resistance for disease control, studies were undertaken for the identification of resistant rice genotypes by screening against the blast fungus Pyricularia oryzae. Twenty-three, 39 and 40 entries/cultivars from Rice Research Station, Kala Shah Kaku and rice breeding group of NIAB were screened for resistance under field conditions at NIAB during 1998, 1999 and 2000, respectively. Plants were artificially inoculated with blast fungus. IR-6 and KS-282 were found highly resistant in 1998 and resistant in 1999 and 2000. IR-8, DR-82 and DM-15-1-95 were found resistant in all tested years.