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Genetic variability for yield and yield components characters in bacterial blight and blast resistance genes introgressed backcross populations in rice

An experiment was framed to study the variability, nature of gene action and number of genes controlling the characters in bacterial blight and blast resistance genes introgressed three backcross population in rice. Mean variation was high for number of grains and plant height for all the crosses. The characters like plant height, number of productive tillers and number of grains were showed complementary gene interaction for all back cross population. While for thousand grain weight and single plant yield were explained complementary gene interactions in two backcross populations. Selection on these traits would obtain low genetic advance than expected. | Genetic variability for yield and yield components characters in bacterial blight and blast resistance genes introgressed backcross populations in rice