Pak. J. Bot., 41(1): 329-335, 2009. | Back to Contents | ||||
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Updated: 09-07-09 | ||||
EVALUATION OF RICE GENOTYPES FOR RESISTANCE AGAINST BACTERIAL LEAF BLIGHT
M.A. WAHEED1, INAMULLAH2, HABIB AHMAD2*, SIRAJUDDIN3, HAIDAR ALI4, A.Q. KHAN5 AND A. KHAN6Abstract: Assessment of losses in yield and yield components by bacterial leaf blight of 11 rice genotypes viz., PARC-291, PARC-292, PARC-293, PARC-294, PARC-295, PARC-296, PARC-297, PARC-298, PARC-299, PARC-300, PARC-301 were carried out under natural field conditions of Mansehra. Significant differences were observed for all the traits studied. Lowest infection was shown by PARC-301 with a disease scoring of 42.5, minimum and statistically equivalent number of days to 50% heading observed in PARC-294 (79 days), PARC-296 (81.3 days) and PARC-299 (81.3 days), maximum plant height 68.5 cm in PARC-298, maximum 25 tillers in PARC-292, maximum value for spike length showed by PARC-296 (21.6 cm), maximum number of grains in PARC-292 (161.3), PARC-292 and PARC-298 out yielded in straw yield and grain yield with a value of 5.6 kg/plot and 2.567 kg/plot, respectively. The genotypes PARC-298, PARC-299 and PARC-301 showed resistance to bacterial leaf blight and out yielded in grain yield. These genotypes are recommended for general cultivation and further use in breeding programmes.
1Department of Microbiology, Hazara University, Mansehra, Pakistan 2Department of Genetics, Hazara University, Mansehra, Pakistan 3Department of Botany, Islamia College, Peshawar, Pakistan 4Agriculture Research Station, Baffa, Mansehra, Pakistan 5Department of Botany, University of Karachi, Karachi 6Department of Environmental Sciences, Hazara University, Mansehra, Pakistan |
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