tailieunhanh - Studies on BB resistance introgression in aromatic rice variety Keteki Joha

Keteki joha, one of the most popular aromatic rice variety of our region was found to be resistant towards BB earlier, but is also becoming highly infested by the disease now a days. This may be due to the climatic change which may lead to the evolution of new races of the pathotype which might not exist earlier in Assam. Bacterial blight (BB) caused by Xanthomonas oryzae pv. oryzae (Xoo) is one of the most devastating diseases affecting entire rice acreages. It causes severe yield losses of up to 80% depending on the stage of the crop, cultivar susceptibility, and environmental conditions. An effectual and well founded chemical control method of the disease is not available. To save the crop from this deleterious disease, intensification of host plant resistance is the viable option, but it is hard to attain the required resistance through conventional breeding. Therefore the introgression of resistance genes of BB is the greatest possible way to tackle this disease and raise the productivity of the rice cultivation. The resistant varieties carrying resistance genes have been utilized to control the disease. | Studies on BB resistance introgression in aromatic rice variety Keteki Joha

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