Panicum is the largest genus of the tribe Paniceae and one of the biggest genera in the family Gramineae, represented by more than 500 species . A majority of the economically important grasses in the genus constitute millets and are extensively cultivated. In India this genus is represented by 29 species (Majumdar 1972) . Most of the Indian species are indigenous , whereas a few others are introduced. Presently 13 species of the genus have been studied for their detailed meiotic be haviour from North-Eastern India .