Year: 2016 | Month: December | Volume 9 | Issue 6
Detection of salt gene expression in resistant rice lines to brown spot disease
Brown spot is one of the most common and damaging rice diseases and it has been reported to occur in all the rice growing countries. This disease infects the coleoptile, leaves, leaf sheath, panicle branches, glumes, and spikelets. It occurs at all crop stages, but infection is more severe during maximum tillering up to the ripening stages of the crop. In South and Southeast Asia, this disease causes 5% yield loss across all lowland rice production. In this study, 611 rice germplasm lines were evaluated for identification of resistant line against leaf brown spot disease at field level. Among them, 52 lines were resistant, 157 lines were moderately resistant and 408 rice lines were susceptible. In gene expression analysis, strong expression of SalT gene linked with Abscisic acid (ABA) signalling pathway was found in resistant and moderately resistant rice lines. Thus selected resistant rice lines will be useful in breeding programme to improve rice cultivars against brown spot disease.
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