Division of Genetics, Indian Agricultural Research Institute, New Delhi-12
Online published on 25 January, 2012.
The nature of differentiation between 20 varieties of linseed of diverse origin was examined over two seasons utilizing multivariate analysis.
The material could be grouped into seven clusters, the three exotics forming three distinct individual clusters. The number and composition of the clusters remained the same in both the years in spite of considerable seasonal differences. The stability of the grouping was confirmed by the canonical analysis also indicating the utility of multivariate analysis in analysing intra-specific differentiation.
Considerable diversity among the peninsular types was observed which could be related to the diverse ecological conditions within this region. The seven derived types which are rust resistant revealed an irregular pattern of distribution among the clusters but could be related to the region of their adaptation.
The results of the investigation were discussed with particular reference to the breeding programme for linseed improvement in India.
