Cytological Studies in Some North Indian Scrophulariaceae

Cytomorphological Studies in Convolvulaceae

“…Poly ploidy both at inter and intra-specific levels is evident in the genera Convolvulus, Merremia, Aneisia and Ipomoea (cf. Fedorov 1969, Moore 1937, Magoon et al 1971Vij and Singh 1976). With the exception of I. batatas, a hexaploid, all the other presently studied taxa are diploid.…”

“…in the constituent species, suggests homogenity of the genus. Recently, Vij and Sachdeva (1974) shown a gross similarity of the pollen grain characteristics of the different species of Ipomoea and according to them, the dissimilarities whatsoever met in the different subgenera are as much as met within the same subgenus. All this data warrants against the segregation of Ipomea into smaller genera with poorly defined limits as done by Engler and Prantl (1897).…”