Division of Genetics, Indian AAricultural Research Institute, New Delhi-12
*Present address: Dryland Farming Research Centre, Central Arid Zone Research Institute, Jodhpur.
Online published on 25 January, 2012.
Investigations on genetic differentiation among the tetraploid Triticum species were carried out both by hybridization and mutation experiments. On the basis of magnitude of genetic differentiation, dicoccum appears to be the oldess followed by carthlicum, turgidum, durum and polonicum. However, the morphological key characters of turgidum, pyramidale and durum are based on a series of polygenes only. These results support the revised classification of the tetraploid Triticum species proposed by Mackey (1966).
