Abstract
Cytogenetical studies were carried out in colchicine induced autotetraploids of Chrysanthemum coronarium. Autotetraploids are found to be inferior and do not show any increase in size of its parts. Meiosis is characterised by multiple associations ranging from octavalent to univalents. There is moderate frequency of multivalent formation. Though there is tendency for normal distribution at A-I and high pollen fertility, viable achenes are not produced.
