were used during present investigation. A considerable level of polymorphism was observed among aromatic, nonaromatic
and japonica cultivars for the majority of the morphological characters measured. Cluster and principal component
analyses were used to classify rice cultivars on the basis of phenotypic traits. Dendrogram was generated for the Euclidean
distance and phenotypically all the cultivars were classified into three major groups corresponding to the forms of indica rice
cultivated in Pakistan, i.e., aromatic (Basmati) and non-aromatic (Non-basmati) with few exceptions. Clustering of the
cultivars did not show any pattern of association between the morphological characters and the origin of the cultivars.
Instead cultivar groups were associated with their morphological similarities and type of indica rice cultivated in various
regions of Pakistan. Regardless of the limitation in estimating total genetic variation, the current study indicated that agromorphological
traits were helpful for preliminary characterization and can be used as a broad-spectrum approach to assess
genetic diversity among morphologically distinguishable rice cultivars.