AbstractSeventeen rice cultivate resistant to brown planthoppers were genetically analyzed using the Bangladesh insect population. Seven cultivars were found to have a single dominant gene for resistance. These genes segregated independently of the recessive resistance genebph‐5. Tae dominant resistance gene of ‘Swarnalata’ was designatedBph‐6. In ten cultivars, resistance is conferred by single recessive genes. In eight cultivars, the resistance genes are allelic tobph‐5. However, the recessive genes o: two cultivars are non‐allelic tobph‐5.The recessive gene of T12 is de